EP0274722A2 - Straightening machine for plate and strips - Google Patents

Straightening machine for plate and strips Download PDF

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Publication number
EP0274722A2
EP0274722A2 EP87118938A EP87118938A EP0274722A2 EP 0274722 A2 EP0274722 A2 EP 0274722A2 EP 87118938 A EP87118938 A EP 87118938A EP 87118938 A EP87118938 A EP 87118938A EP 0274722 A2 EP0274722 A2 EP 0274722A2
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EP
European Patent Office
Prior art keywords
straightening
rollers
crossheads
cassette
support rollers
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.)
Granted
Application number
EP87118938A
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German (de)
French (fr)
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EP0274722A3 (en
EP0274722B1 (en
Inventor
Willi Benz
Walter Eltinger
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
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Publication date
Application filed by SMS Schloemann Siemag AG, Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Priority to AT87118938T priority Critical patent/ATE67696T1/en
Publication of EP0274722A2 publication Critical patent/EP0274722A2/en
Publication of EP0274722A3 publication Critical patent/EP0274722A3/en
Application granted granted Critical
Publication of EP0274722B1 publication Critical patent/EP0274722B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
    • B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers

Definitions

  • the invention relates to a straightening machine for sheets and strips, in particular for cold-rolled sheets and strips, according to the preamble of claim 1, and is therefore based on a prior art known from practice, the so-called "tilting yoke adjustment".
  • Straightening machines of this type have upper and lower transverse yokes or crossheads as well as interchangeable cassettes, which are divided in the central vertical transverse plane of the straightening rollers and are connected to one another by articulated connections in such a way that the crosshead and cassette parts together with the groups of support rollers for the straightening rollers they carry underneath Idle conditions can be tilted or turned slightly V-shaped.
  • the crossheads and interchangeable cassettes should bend so far that the preset V-shape disappears, the groups of support rollers are axially aligned and, accordingly, the straightening rollers are straight. This is to compensate for the deflection of the crossheads.
  • the crossheads or at least the upper crosshead as a whole can be adjusted obliquely in the feed direction of the straightening goods by means of two pairs of adjusting devices which are supported on stands, in order, as is known, to decrease the immersion depth of the offset straightening rollers for hyperextension distribution from the infeed side of the straightening goods to the outlet side adjust.
  • the bending behavior of the divided crossheads of known sheet metal straightening machines with the tilting yoke described is determined in that the crossheads are to be understood as supports with two supports on which the bending force acts at least initially in the central plane of symmetry until the straightening rollers are straight due to the deflection of the crossheads. With the given bending stiffness of the crossheads, the deflection is thus optimal. However, the size of the preset V-shape of the divided crossheads also depends on the degree of deflection.
  • the straightening rollers should already be in contact with the groups of support rollers, which are likewise V-shaped, under idle conditions, the straightening rollers must also be pre-bent in a V-shape by forces acting on their ends. Since the extent of the straightening roll pre-bending due to the strong kink position and the groups of support rollers to the right and left of the central vertical transverse plane of the crossheads must be considerable, the straightening rolls - until they are bent under the straightening force - are subjected to considerable bending stress.
  • the invention has for its object to improve the known "Kippjochtex" in a straightening machine for sheets and strips in such a way that the straightening rollers have to be less pre-bent before the straightening force occurs, i. H. the straightening rollers are treated more gently.
  • the crossheads are made in one piece in a conventional manner, the interchangeable cassettes no longer being made in two parts, but instead being made in three parts by two intermediate joints each with a central part which is divided into two Spaced rigid supports supported on the associated crosshead.
  • this leads to improved bending behavior of the one-piece crossheads, which can thus be carried out more easily.
  • the actuating devices which represent limit stops to a certain extent, consist expediently of adjusting wedges which extend transversely to the straightening rollers and which, in any adjustment position, extend over the length of the cassette, as seen in the direction of advance of the straightened material, the cassettes being counter-tensioned by tension members attached to the associated crosshead the rigid supports and the adjustment wedges are pressed on.
  • These prestressed tension members represent a kind of balancing, at least for the upper cassette, in that not only the middle part is pressed against the two rigid supports on the crosshead, but also the outer side parts are pressed against the adjustment wedges in their upward pivoting position before straightening under idle conditions .
  • the bending moments are generated by internal second preloaded tension members, which are connected to the bearing housings in a tensile manner, and by external preloaded pressure members, so that a pair of forces acts on each bearing housing, which bends the straightening rollers at the ends as described.
  • the cassette together with the support rollers and the associated straightening rollers constitute a coherent structural unit which can be removed axially for changing the straightening rollers.
  • exchangeable cassettes are created, which can be removed together with the associated straightening rollers, for which purpose, according to claim 4, the tensile connections between the transversely tensioned tension members and the box-shaped cassettes can be released, as described in the drawing description is explained.
  • the main components of the straightening machine partially shown in FIG. 1 are two pairs of stand-like frames 1, of which only the outlet-side frame can be seen in FIG. 1 when the direction of advance of the straightening good runs in the viewing direction.
  • Extending between the frame parts are an upper and a not shown lower rigid crosshead 2, on which the straightening rollers 3, which are offset in the feed direction and are supported in bearing housings 4, are ultimately supported.
  • the straightening rolls 3 are driven in a manner not shown via the pins 5 on the left, so that the removal side for changing the rolls is on the right in the drawing.
  • the crossheads 2 can be adjusted up and down by four adjusting devices 6 in order to influence the relative position of the upper and lower straightening rollers 3 offset from one another transversely to the direction of advance of the straightening material.
  • the crossheads 2 and thus the straightening rollers 3 are set on the inlet side to a larger overstretching amount than on the outlet side, ie the crossheads 2 are set to be somewhat divergent in the feed direction.
  • the bearing blocks 12 for a group of support rollers 13 are supported by the central part 7a, each supporting a straightening roller 3.
  • the side part 7b carries bearing blocks 14 for two further support rollers 15 for each straightening roller 3, and the side part 7a carries bearing blocks 16 for two further support rollers 17.
  • the straightening machine thus comprises three groups of support rollers 13, 15 and 17, of which the outer groups 15 and 17 can be adjusted independently of the central group of support rollers 13 by the articulated connection of the side parts 7b, 7c to the central part 7a.
  • all support rollers 13, 15, 17 are arranged in the vertical axis plane of the straightening rollers 3. This requires that the chocks 4 of the straightening rollers are fixed in position in the horizontal plane, for example in that adjacent bearing housings 4 abut one another.
  • each straightening roller is supported in a saddle-like manner by means of a V-shaped arrangement of support rollers and is thus fixed in the horizontal plane.
  • the middle part 7a is supported in the region of its ends symmetrically to the central transverse plane Q of the rigid crosshead 2 and the straightening rollers 3 via two rigid supports 20 which are arranged at a relatively large distance from one another and which distribute the straightening force transmitted by the support rollers 13 in a relatively broad distribution into the crosshead 2 transfer, which has a favorable influence on the deflection of the crosshead.
  • the rigid supports 20 are appropriately assigned stiffening webs 2a of the crosshead 2 in their vertical planes.
  • Each outer side part 7b, 7c of the non-rigid cassette 7 is assigned in the region of the outermost support rollers 15, 17 an adjusting device 21 or 22 which limits the pivoting position of the side part with respect to the crosshead 2.
  • the adjusting devices consist of adjusting wedges 21a, 22a which extend transversely to the straightening rollers 3 and which, in any adjustment position, extend over the length of the cassette 7 - as seen in the direction of advance of the straightened material - and are supported on counter wedges 21b, 22b fixed in the crosshead 2.
  • the cassette 7 is pressed against the rigid supports 20 and the adjusting wedges 21a, 22a by prestressed first tension members 23, 24 and 25 which are fixed to the crosshead 2. This is imperative for the upper cassette 7 for reasons of balancing, but is also provided for the lower cassette for reasons of stabilization, for the following reason as far as the outer elastic tension members 24 and 25 are concerned:
  • FIG. 1 namely, the cassette 7 is shown in the straight stretched position, which it is supposed to take under consideration of the deflection of the crosshead 2 under the directional force. Without this deflection, i.e. H. under no-load conditions, the rigid supports 20 for the middle part 7a are set somewhat lower (and for the lower part of the machine somewhat higher) so that the side parts 7b and 7c lie in a pivoted-out folded position on the adjusting wedges 21a, 22a. This is caused by the elastic tension members 24 and 25.
  • FIG. 4 shows, in solid lines, schematically the bending position of the side parts 7b and 7c with respect to the middle part 7a under idle conditions. The same representation also applies to the lower part of the machine.
  • the side parts 7b and 7c of the lower cassette are also held pressed by (then directed downwards) tensile forces on the lower adjusting wedges 21a, 22a, so that the pairs of side parts 7b and 7c, one above the other, diverge by the same angle.
  • the bearing housings 4 are pulled at their inner ends facing the straightening rollers 3 by prestressed second tension members 26 in the direction of the side parts 7b and 7c and pressed at their outer ends by prestressed pressure members 27, the tension members 26 and the pressure members 27 are both supported on the side parts 7b and 7c of the cassette 7.
  • packets of disc springs are used which act on tie rods 26a and push rods 27a.
  • the tie rods 26a are connected to the bearing housings 4 in a tensile manner.
  • the construction of the straightening rollers 3 to the right for regrinding the straightening rollers is possible in the construction according to FIG. 1 in a conventional manner if the tensile connections between the tension rods 26a of the prestressed tension members 26 are released and the pressure rods 27a of the elastic ones Pressure members 27 are released.
  • the manual work associated with this can, however, be avoided if the entire cassette 7, including support rollers and upper and lower rollers, is designed as an exchangeable cassette.
  • the tension members 23, 24 and 25 are designed as piston-cylinder units, the pistons 30 of which are spring-loaded in the pulling direction by plate springs 31 and can be acted upon by a pressure medium in the opposite direction.
  • the piston rods 32 (FIG.
  • elongated holes 33 pass through the outer wall of the box-shaped cassette parts in elongated holes 33 and are provided at the free ends with collars 34 which transmit the tensile force.
  • the elongated holes 33 are expanded against the direction of removal A of the cassette to a diameter B which is larger than the diameter of the collar 34.
  • the crosshead 2 is raised or lowered by the adjusting devices 6, so that the upper or lower Cassette 7 together with the parts connected to it can be removed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
  • Structure Of Belt Conveyors (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)

Abstract

A leveling machine for steel sheet and strip includes changing cartridges between sets of leveler rolls including support rollers and adjustable crossheads. Each changing cartridge includes three cartridge portions which are connected to each other by means of two intermediate joints. The middle cartridge portion is supported on the corresponding crossheads by means of two spaced-apart rigid supports, so that only the outer cartridge portions can be limited in their pivoting positions by means of adjusting wedges or the like and, for compensating sagging of the crossheads, the leveler rolls must only be subjected to a prebending force in the regions away from the middle cartridge portion.

Description

Die Erfindung betrifft eine Richtmaschine für Bleche und Bänder, insbesondere für kaltgewalzte Bleche und Bänder nach dem Oberbegriff des Patentanspruches 1 und geht da­mit von einem aus der Praxis bekannten Stand der Technik aus, der sog. "Kippjochanstellung". Richtmaschinen dieser Bauart weisen obere und untere Querjoche bzw. Querhäupter sowie Wechselkassetten auf, die in der mittleren senk­rechten Querebene der Richtwalzen geteilt und durch Gelenk­verbindungen derart miteinander verbunden sind, daß die Querhaupt- und Kassettenteile samt den von ihnen getragenen Gruppen von Stützrollen für die Richtwalzen unter Leerlauf­bedingungen leicht V-förmig gekippt bzw. angestellt werden können. Unter der Richtkraft sollen sich die Querhäupter und Wechselkassetten so weit durchbiegen, daß die vorein­gestellte V-Form verschwindet, die Gruppen von Stützrollen axial fluchten und demgemäß die Richtwalzen gerade sind. Hierdurch soll die Durchbiegung der Querhäupter kompensiert werden. Es versteht sich, daß die Querhäupter oder zumin­dest das obere Querhaupt als Ganzes über zwei Paare von sich an Ständern abstützenden Anstellvorrichtungen in Vorschub­richtung des Richtgutes schräg anstellbar sind, um wie be­kannt die Eintauchtiefe der versetzten Richtwalzen zur Überstreckungsverteilung von der Einlaufseite des Richt­gutes bis zur Auslaufseite abnehmend einzustellen.The invention relates to a straightening machine for sheets and strips, in particular for cold-rolled sheets and strips, according to the preamble of claim 1, and is therefore based on a prior art known from practice, the so-called "tilting yoke adjustment". Straightening machines of this type have upper and lower transverse yokes or crossheads as well as interchangeable cassettes, which are divided in the central vertical transverse plane of the straightening rollers and are connected to one another by articulated connections in such a way that the crosshead and cassette parts together with the groups of support rollers for the straightening rollers they carry underneath Idle conditions can be tilted or turned slightly V-shaped. Under the straightening force, the crossheads and interchangeable cassettes should bend so far that the preset V-shape disappears, the groups of support rollers are axially aligned and, accordingly, the straightening rollers are straight. This is to compensate for the deflection of the crossheads. It goes without saying that the crossheads or at least the upper crosshead as a whole can be adjusted obliquely in the feed direction of the straightening goods by means of two pairs of adjusting devices which are supported on stands, in order, as is known, to decrease the immersion depth of the offset straightening rollers for hyperextension distribution from the infeed side of the straightening goods to the outlet side adjust.

Das Biegeverhalten der geteilten Querhäupter bekannter Blech­richtmaschinen mit der beschriebenen Kippjochanstellung ist dadurch bestimmt, daß die Querhäupter als Träger mit zwei Auflagen aufzufassen sind, an denen die Biegekraft zumindest anfänglich in der mittleren Symmetrieebene angreift, bis aufgrund der Durchbiegung der Querhäupter die Richtwalzen gerade sind. Bei vorgegebener Biegesteifigkeit der Quer­häupter ist die Durchbiegung somit optimal. Von dem Maß der Durchbiegung ist jedoch auch die Größe der voreingestellten V-Form der geteilten Querhäupter abhängig. Da nun ferner die Richtwalzen unter Leerlaufbedingungen bereits an den eben­falls V-förmig gerichteten Gruppen von Stützrollen anliegen sollten, müssen auch die Richtwalzen durch an ihren Enden angreifende Kräfte V-förmig vorgebogen werden. Da das Ausmaß der Richtwalzen-Vorbiegung wegen der starken Knicklage auch der Gruppen von Stützrollen rechts und links von der mittleren senkrechten Querebene der Querhäupter beträchtlich sein muß, werden die Richtwalzen - bis sie unter der Richtkraft gerade gebogen sind - erheblich auf Biegung beansprucht.The bending behavior of the divided crossheads of known sheet metal straightening machines with the tilting yoke described is determined in that the crossheads are to be understood as supports with two supports on which the bending force acts at least initially in the central plane of symmetry until the straightening rollers are straight due to the deflection of the crossheads. With the given bending stiffness of the crossheads, the deflection is thus optimal. However, the size of the preset V-shape of the divided crossheads also depends on the degree of deflection. Furthermore, since the straightening rollers should already be in contact with the groups of support rollers, which are likewise V-shaped, under idle conditions, the straightening rollers must also be pre-bent in a V-shape by forces acting on their ends. Since the extent of the straightening roll pre-bending due to the strong kink position and the groups of support rollers to the right and left of the central vertical transverse plane of the crossheads must be considerable, the straightening rolls - until they are bent under the straightening force - are subjected to considerable bending stress.

Der Erfindung liegt die Aufgabe zugrunde, das bekannte "Kipp­jochprinzip" bei einer Richtmaschine für Bleche und Bänder dahingehend zu verbessern, daß die Richtwalzen vor dem Auf­treten der Richtkraft weniger vorgebogen werden müssen, d. h. die Richtwalzen schonender behandelt werden.The invention has for its object to improve the known "Kippjochprinzip" in a straightening machine for sheets and strips in such a way that the straightening rollers have to be less pre-bent before the straightening force occurs, i. H. the straightening rollers are treated more gently.

Die Lösung dieser Aufgabe besteht gemäß der Erfindung aus den kennzeichnenden Merkmalen des Patentanspruches 1. Hiernach sind die Querhäupter in konventioneller Weise einstückig aus­geführt, wobei die Wechselkassetten nicht mehr zweiteilig, sondern durch jeweils zwei Zwischengelenke dreiteilig ausge­führt sind mit einem Mittelteil, das sich über zwei im Abstand voneinander angeordnete starre Auflagen an dem zugehörigen Querhaupt abstützt. Dies führt zunächst einmal zu einem ver­besserten Biegeverhalten der einstückigen Querhäupter, die somit leichter ausgeführt werden können.This object is achieved according to the invention from the characterizing features of claim 1. According to this, the crossheads are made in one piece in a conventional manner, the interchangeable cassettes no longer being made in two parts, but instead being made in three parts by two intermediate joints each with a central part which is divided into two Spaced rigid supports supported on the associated crosshead. First of all, this leads to improved bending behavior of the one-piece crossheads, which can thus be carried out more easily.

Zur Schonung der Richtwalzen ist es jedoch wesentlicher, daß die voreingestellte Knickanstellung von zwei Gruppen von Stützrollen lediglich im Bereich der beiden gelenkig ange­schlossenen und somit schwenkbaren äußeren Seitenteile der unstarren Wechselkassette vorliegt, deren Schwenklage in Richtung der Richtkraft gegenüber dem zugehörigen Querhaupt durch jeweils eine Stellvorrichtung begrenzt ist. Die Folge hiervon ist, daß die Richtwalzen nicht mehr im mittleren Be­reich, sondern nur an ihren Enden einer Vorbiegung zu unter­werfen sind, die einen Kontakt zwischen den Richtwalzenenden und den äußeren Gruppen von Stützwalzen auch im Leerlauf sicherstellt.To protect the straightening rollers, however, it is more important that the preset buckling of two groups of support rollers is only present in the area of the two articulated and thus pivotable outer side parts of the non-rigid exchangeable cassette, the pivoting position of which in the direction of the straightening force relative to the associated crosshead is limited by an adjusting device is. The consequence of this is that the straightening rolls are no longer to be subjected to a pre-bend in the middle region, but only at their ends, which ensures contact between the straightening roll ends and the outer groups of back-up rolls even when idling.

Die Stellvorrichtungen, die gewissermaßen Begrenzungsan­schläge darstellen, bestehen zweckmäßig aus sich quer zu den Richtwalzen erstreckenden Verstellkeilen, die sich in jeder Verstellposition über die Länge der Kassette - in Vorschub­richtung des Richtgutes gesehen - erstrecken, wobei die Kassetten durch an dem zugehörigen Querhaupt festgelegte vorgespannte Zugglieder gegen die starren Auflagen und die Verstellkeile angedrückt sind. Diese vorgespannten Zugglieder stellen zumindest für die obere Kassette eine Art Ausbalan­cierung dar, indem schon vor dem Richten unter Leerlauf­bedingungen nicht nur das Mittelteil gegen die beiden quer­hauptseitigen starren Auflagen angedrückt ist, sondern auch die äußeren Seitenteile in ihrer nach aufwärts gerichteten Schwenklage an die Verstellkeile angedrückt sind. Obwohl die untere Kassette durch ihr Eigengewicht sowohl mit dem Mittel­teil an den querhauptseitigen Auflagen sowie mit den in ab­wärts geneigter Schwenklage abgefallenen Seitenteilen an den Verstellkeilen anliegen würden, empfehlen sich zur Stabilisierung der Verhältnisse auch hier die an dem zugehörigen Querhaupt festgelegten vorgespannten Zugglieder.The actuating devices, which represent limit stops to a certain extent, consist expediently of adjusting wedges which extend transversely to the straightening rollers and which, in any adjustment position, extend over the length of the cassette, as seen in the direction of advance of the straightened material, the cassettes being counter-tensioned by tension members attached to the associated crosshead the rigid supports and the adjustment wedges are pressed on. These prestressed tension members represent a kind of balancing, at least for the upper cassette, in that not only the middle part is pressed against the two rigid supports on the crosshead, but also the outer side parts are pressed against the adjustment wedges in their upward pivoting position before straightening under idle conditions . Although the lower cassette, due to its own weight, would rest with the middle part on the supports on the cross-head side as well as with the side parts that fell away in a downward inclined position on the adjustment wedges, To stabilize the conditions, the prestressed tension members fixed on the associated crosshead are also recommended.

Damit die Richtwalzen schon unter Leerlaufbedingungen, d. h. divergierenden Paaren von oberen und unteren Seitenteilen nebst Stützrollen auch an den äußeren Stützrollen anliegen, wodurch Schläge beim Eintritt des Richtgutes in die Walzen­anordnung vermieden werden, wird nach Patentanspruch 3 auf die Lagergehäuse der Richtwalzen das aus dem Walzwerkbau be kannte "Double Chock Bending"-System angewendet, d. h. die Lagergehäuse stehen unter Biegemomenten, die die oberen Richtwalzen an ihren Enden aufwärts und die unteren Richt­walzen an ihren Enden abwärts, d. h. gegen die zurückver­setzten äußeren Stützrollen biegen, die von den divergieren­den Seitenteilpaaren getragen sind. Die Biegemomente werden erzeugt durch innenliegende zweite vorgespannte Zugglieder, die mit den Lagergehäusen zugfest verbunden sind, und durch äußere vorgespannte Druckglieder, so daß an jedem Lagerge­häuse ein Kräftepaar angreift, das die Richtwalzen wie be­schrieben an den Enden vorbiegt.So that the straightening rollers already under idle conditions, d. H. diverging pairs of upper and lower side parts, along with support rollers, also rest on the outer support rollers, thereby avoiding blows when the straightening material enters the roller arrangement. According to claim 3, the "Double Chock Bending" system known from rolling mill construction is used in rolling mill construction applied, d. H. the bearing housings are under bending moments which the upper straightening rollers at their ends upwards and the lower straightening rollers at their ends downwards, i. H. bend against the recessed outer support rollers carried by the diverging side part pairs. The bending moments are generated by internal second preloaded tension members, which are connected to the bearing housings in a tensile manner, and by external preloaded pressure members, so that a pair of forces acts on each bearing housing, which bends the straightening rollers at the ends as described.

Da die Lagergehäuse der Richtwalzen sowie die Richtwalzen selbst von den kassettenseitigen vorgespannten zweiten Zug­gliedern an den Seitenteilen der Kassette fixiert sind, da diese zweiten Zugglieder zugfest mit den Lagergehäusen ver­bunden sind, stellt die Kassette samt den Stützrollen sowie den zugehörigen Richtwalzen eine zusammenhängende Baueinheit dar, die zum Wechseln der Richtwalzen axial ausgebaut werden kann Es werden somit Wechselkassetten geschaffen, die zu­sammen mit den zugehörigen Richtwalzen ausbaubar sind, wo­zu nach Patentanspruch 4 die zugfesten Verbindungen zwischen den querhauptseitigen vorgespannten Zuggliedern und den kastenförmig ausgebildeten Kassetten gelöst werden können, wie in der Zeichnungsbeschreibung noch näher erläutert wird.Since the bearing housing of the straightening rollers and the straightening rollers themselves are fixed to the side parts of the cassette by the pretensioned second tension members on the cassette side, since these second tension members are connected to the bearing housings in a tensile manner, the cassette together with the support rollers and the associated straightening rollers constitute a coherent structural unit which can be removed axially for changing the straightening rollers. Thus, exchangeable cassettes are created, which can be removed together with the associated straightening rollers, for which purpose, according to claim 4, the tensile connections between the transversely tensioned tension members and the box-shaped cassettes can be released, as described in the drawing description is explained.

In der Zeichnung ist ein Ausführungsbeispiel einer Kaltblech­richtmaschine gemäß der Erfindung dargestellt, und zwar zeigen

  • Fig. 1 einen senkrechten Querschnitt quer zur Vorschub­richtung des Richtgutes, die Kassette teilweise in Frontansicht,
  • Fig. 2 einen waagerechten Teilschnitt nach der Linie II-II in Fig. 1 zur Darstellung der Gelenkver­bindungen,
  • Fig. 3 eine Einzelheit im Schnitt nach der Linie III-III in Fig. 1, und
  • Fig. 4 eine schematische Darstellung der dreiteiligen unstarren Kassette vor und während des Richtens.
In the drawing, an embodiment of a cold plate leveler according to the invention is shown, namely show
  • 1 is a vertical cross section transverse to the feed direction of the straightening good, the cassette partially in front view,
  • 2 shows a horizontal partial section along the line II-II in FIG. 1 to show the articulated connections,
  • Fig. 3 shows a detail in section along the line III-III in Fig. 1, and
  • Fig. 4 is a schematic representation of the three-part rigid cassette before and during straightening.

Die Hauptbestandteile der in Fig. 1 teilweise dargestellten Richtmaschine sind zwei Paare von ständerartigen Rahmen 1, von denen in Fig. 1 nur der auslaufseitige Rahmen zu sehen ist, wenn die Vorschubrichtung des Richtgutes in Blickrich­tung verläuft. Zwischen den Rahmenteilen erstrecken sich ein oberes und ein nicht dargestelltes unteres biegesteifes Quer­haupt 2, an denen sich letztlich die in Vorschubrichtung zu­einander versetzt angeordneten Richtwalzen 3 abstützen, die in Lagergehäusen 4 gelagert sind. Die Richtwalzen 3 werden in nicht dargestellter Weise über die links gelegenen Zapfen 5 angetrieben, so daß die Ausbauseite zum Walzenwechsel auf der Zeichnung rechts gelegen ist. Die Querhäupter 2 sind durch vier Anstellvorrichtungen 6 auf und ab anstellbar, um die Relativlage der oberen und unteren zueinander ver­setzten Richtwalzen 3 quer zur Vorschubrichtung des Richt­gutes zu beeinflussen. Zur Einstellung der Überstreckungsver­teilung werden bekanntlich die Querhäupter 2 und damit die Richtwalzen 3 einlaufseitig auf einen größeren Überstreckungs­betrag eingestellt als auslaufseitig, d. h. die Querhäupter 2 werden in Vorschubrichtung etwas divergierend angestellt.The main components of the straightening machine partially shown in FIG. 1 are two pairs of stand-like frames 1, of which only the outlet-side frame can be seen in FIG. 1 when the direction of advance of the straightening good runs in the viewing direction. Extending between the frame parts are an upper and a not shown lower rigid crosshead 2, on which the straightening rollers 3, which are offset in the feed direction and are supported in bearing housings 4, are ultimately supported. The straightening rolls 3 are driven in a manner not shown via the pins 5 on the left, so that the removal side for changing the rolls is on the right in the drawing. The crossheads 2 can be adjusted up and down by four adjusting devices 6 in order to influence the relative position of the upper and lower straightening rollers 3 offset from one another transversely to the direction of advance of the straightening material. To set the overstretching distribution, it is known that the crossheads 2 and thus the straightening rollers 3 are set on the inlet side to a larger overstretching amount than on the outlet side, ie the crossheads 2 are set to be somewhat divergent in the feed direction.

Wegen der Symmetrie des Richtvorganges ist es empfehlenswert, auch dem nicht dargestellten unteren Querhaupt 2 vier An­stellvorrichtungen 6 zuzuordnen, jedoch ist dies nicht zwin­gend notwendig.Because of the symmetry of the straightening process, it is advisable to also assign four adjustment devices 6 to the lower crosshead 2, which is not shown, but this is not absolutely necessary.

Weitere Einzelheiten der in Fig. 1 dargestellten Kaltblechricht­maschine werden lediglich in bezug auf das Oberteil der Maschine erläutert, jedoch sind sie in gleicher Weise auch für das identisch ausgeführte Unterteil gültig.Further details of the cold plate straightening machine shown in FIG. 1 are only explained in relation to the upper part of the machine, but they also apply in the same way to the identically designed lower part.

Neu ist die Anordnung einer unstarren, kastenförmigen Kas­sette 7 zwischen dem Querhaupt 2 und den Richtwalzen 3, die sich über die gesamte Länge und Breite des Querhauptes 2 er­streckt und aus einem Mittelteil 7a und zwei Seitenteilen 7b, 7c, besteht, die über Zwischengelenke 8, 9 an das durch eine randseitige Schraffur hervorgehobene Mittelteil 7a in Rich­tung der auftretenden Richtkraft schwenkbeweglich ange­schlossen sind. Wie aus dem waagerechten Teilschnitt nach Fig. 2 hervorgeht, erstrecken sich die Gelenkbolzen 8a und 9a waagerecht und verbinden sich jeweils überdeckende vor­stehende Laschen der Kassettenteile 7a, 7b und 7c. Die Ge­lenkbolzen 8a, 9a sind im übrigen durch obere und untere Riegel 10 fixiert. Die in Fig. 1 und 2 dargestellten ein­laufseitigen Gelenkverbindungen 8, 9 sind auch am auslauf­seitigen Ende der unstarren Kassette 7 vorgesehen, da die Gelenkbolzen 8a,9a durchgehend bis zum auslaufseitigen Ende ausgeführt sind.What is new is the arrangement of an rigid, box-shaped cassette 7 between the crosshead 2 and the straightening rollers 3, which extends over the entire length and width of the crosshead 2 and consists of a central part 7a and two side parts 7b, 7c, which are connected via intermediate joints 8, 9 are connected to the central part 7a, which is highlighted by a hatching on the edge, so as to be pivotable in the direction of the directional force that occurs. As can be seen from the horizontal partial section according to FIG. 2, the hinge pins 8a and 9a extend horizontally and connect overlapping projecting tabs of the cassette parts 7a, 7b and 7c. The hinge pins 8a, 9a are otherwise fixed by upper and lower bolts 10. The inlet-side joint connections 8, 9 shown in FIGS. 1 and 2 are also provided at the outlet-side end of the rigid cassette 7, since the hinge pins 8a, 9a are made continuously up to the outlet-side end.

Von dem Mittelteil 7a sind die Lagerböcke 12 für eine Gruppe von Stützrollen 13 getragen, die jeweils eine Richtwalze 3 abstützen. Das Seitenteil 7b trägt Lagerböcke 14 für zwei weitere Stützrollen 15 für jede Richtwalze 3, und das Seiten­teil 7a trägt Lagerböcke 16 für zwei weitere Stützrollen 17. Die Richtmaschine umfaßt somit drei Gruppen von Stützrollen 13, 15 und 17, von denen die äußeren Gruppen 15 und 17 durch den gelenkigen Anschluß der Seitenteile 7b, 7c an das Mittel­teil 7a unabhängig von der mittleren Gruppe von Stützrollen 13 anstellbar sind.The bearing blocks 12 for a group of support rollers 13 are supported by the central part 7a, each supporting a straightening roller 3. The side part 7b carries bearing blocks 14 for two further support rollers 15 for each straightening roller 3, and the side part 7a carries bearing blocks 16 for two further support rollers 17. The straightening machine thus comprises three groups of support rollers 13, 15 and 17, of which the outer groups 15 and 17 can be adjusted independently of the central group of support rollers 13 by the articulated connection of the side parts 7b, 7c to the central part 7a.

Im Ausführungsbeispiel sind alle Stützrollen 13, 15, 17 in der senkrechten Achsebene der Richtwalzen 3 angeordnet. Dies erfordert es, daß die Einbaustücke 4 der Richtwalzen in horizontaler Ebene lagemäßig fixiert sind, beispielsweise indem benachbarte Lagergehäuse 4 aneinander anliegen. Es ist jedoch auch denkbar und Stand der Technik, wenn jede Richt­walze durch V-förmige Anordnung von Stützrollen sattelartig abgestützt und somit in horizontaler Ebene fixiert ist.In the exemplary embodiment, all support rollers 13, 15, 17 are arranged in the vertical axis plane of the straightening rollers 3. This requires that the chocks 4 of the straightening rollers are fixed in position in the horizontal plane, for example in that adjacent bearing housings 4 abut one another. However, it is also conceivable and state of the art if each straightening roller is supported in a saddle-like manner by means of a V-shaped arrangement of support rollers and is thus fixed in the horizontal plane.

Das Mittelteil 7a ist im Bereich seiner Enden symmetrisch zur mittleren Querebene Q des starren Querhauptes 2 und der Richtwalzen 3 über zwei in relativ großem Abstand voneinander angeordnete starre Auflagen 20 abgestützt, die die von den Stützrollen 13 weitergeleitete Richtkraft in einer relativ breiten Verteilung in das Querhaupt 2 überleiten, was die Durchbiegung des Querhauptes günstig beeinflußt. Den starren Auflagen 20 sind zweckmäßig in ihren senkrechten Ebenen Ver­steifungsstege 2a des Querhauptes 2 zugeordnet.The middle part 7a is supported in the region of its ends symmetrically to the central transverse plane Q of the rigid crosshead 2 and the straightening rollers 3 via two rigid supports 20 which are arranged at a relatively large distance from one another and which distribute the straightening force transmitted by the support rollers 13 in a relatively broad distribution into the crosshead 2 transfer, which has a favorable influence on the deflection of the crosshead. The rigid supports 20 are appropriately assigned stiffening webs 2a of the crosshead 2 in their vertical planes.

Jedem äußeren Seitenteil 7b, 7c der unstarren Kassette 7 ist im Bereich der äußersten Stützrollen 15, 17 eine die Schwenklage des Seitenteils gegenüber dem Querhaupt 2 be­grenzende Stellvorrichtung 21 bzw. 22 zugeordnet. Im Aus­führungsbeispiel bestehen die Stellvorrichtungen aus sich quer zu den Richtwalzen 3 erstreckenden Verstellkeilen 21a, 22a, die sich in jeder Verstellposition über die Länge der Kassette 7 - in Vorschubrichtung des Richtgutes gesehen - ­erstrecken und sich an im Querhaupt 2 festgelegten Gegen­keilen 21b, 22b abstützen.Each outer side part 7b, 7c of the non-rigid cassette 7 is assigned in the region of the outermost support rollers 15, 17 an adjusting device 21 or 22 which limits the pivoting position of the side part with respect to the crosshead 2. In the exemplary embodiment, the adjusting devices consist of adjusting wedges 21a, 22a which extend transversely to the straightening rollers 3 and which, in any adjustment position, extend over the length of the cassette 7 - as seen in the direction of advance of the straightened material - and are supported on counter wedges 21b, 22b fixed in the crosshead 2.

Die Kassette 7 ist durch vorgespannte erste Zugglieder 23, 24 und 25, die an dem Querhaupt 2 festgelegt, gegen die starren Auflagen 20 und die Verstellkeile 21a, 22a angedrückt. Dies ist für die obere Kassette 7 aus Gründen der Ausbalan­cierung zwingend erforderlich, wird jedoch auch für die untere Kassette aus Gründen der Stabilisierung vorgesehen, und zwar aus folgendem Grunde, soweit es die äußeren elastischen Zugglieder 24 und 25 anbelangt:The cassette 7 is pressed against the rigid supports 20 and the adjusting wedges 21a, 22a by prestressed first tension members 23, 24 and 25 which are fixed to the crosshead 2. This is imperative for the upper cassette 7 for reasons of balancing, but is also provided for the lower cassette for reasons of stabilization, for the following reason as far as the outer elastic tension members 24 and 25 are concerned:

In Fig. 1 ist nämlich die Kassette 7 in der geraden Streck­lage dargestellt, die sie unter Berücksichtigung der Durch­biegung des Querhauptes 2 unter der Richtkraft einnehmen soll. Ohne diese Durchbiegung, d. h. unter Leerlaufbedingungen, sind die starren Auflagen 20 für das Mittelteil 7a über die Anstellvorrichtungen 6 etwas tiefer (und für den Unterteil der Maschine etwas höher) angestellt, so daß die Seitenteile 7b und 7c in einer ausgeschwenkten Knicklage an den Verstell­keilen 21a, 22a anliegen. Dies bewirken die elastischen Zug­glieder 24 und 25. Fig. 4 zeigt in ausgezogenen Linien sche­matisch die Knickstellung der Seitenteile 7b und 7c gegen­über dem Mittelteil 7a unter Leerlaufbedingungen. Die gleiche Darstellung gilt spiegelbildlich auch für den Unterteil der Maschine. Es ist zweckmäßig, daß auch die Seitenteile 7b und 7c der unteren Kassette durch (dann abwärts gerichtete) Zug­kräfte an den unteren Verstellkeilen 21a, 22a gedrückt ge­halten werden, so daß die übereinanderliegenden Paare von Seitenteilen 7b bzw. 7c um den gleichen Winkel divergieren.In Fig. 1, namely, the cassette 7 is shown in the straight stretched position, which it is supposed to take under consideration of the deflection of the crosshead 2 under the directional force. Without this deflection, i.e. H. under no-load conditions, the rigid supports 20 for the middle part 7a are set somewhat lower (and for the lower part of the machine somewhat higher) so that the side parts 7b and 7c lie in a pivoted-out folded position on the adjusting wedges 21a, 22a. This is caused by the elastic tension members 24 and 25. FIG. 4 shows, in solid lines, schematically the bending position of the side parts 7b and 7c with respect to the middle part 7a under idle conditions. The same representation also applies to the lower part of the machine. It is expedient that the side parts 7b and 7c of the lower cassette are also held pressed by (then directed downwards) tensile forces on the lower adjusting wedges 21a, 22a, so that the pairs of side parts 7b and 7c, one above the other, diverge by the same angle.

Es geht aus der einleitenden Zeichnungsbeschreibung hervor, daß die äußeren Gruppen von Stützrollen 15 und 17 an den schwenkbaren Seitenteilen 7b, 7c mitwandernd angeordnet sind und somit ebenfalls die aus Fig. 4 ersichtliche Knick­stellung einnehmen. Diese Stützrollen 15, 17 würden unter Leerlaufbedingungen an den Richtwalzen 3 nicht anliegen und gegen diese anschlagen, wenn die Richtlast auftritt. Damit evtl. Spuren solcher Schläge sich nicht auf das Richtgut übertragen, ist für die Lagergehäuse 4 der Richtwalzen 3 das "Double Chock Bending"-System angewendet, um die äußeren Enden der Richtwalzen 3 in dem Sinne vorzubiegen, daß sie auch im Leerlauf an den Stützrollen 15, 17 anliegen, die gegenüber den mittleren Stützrollen 13 an sich ebenfalls auf Knicklage stehen. Um eine derartige Vorbiegung der Richtwalzen einzustellen, werden die Lagergehäuse 4 an ihren inneren, den Richtwalzen 3 zugewandten Enden durch vorge­spannte zweite Zugglieder 26 in Richtung der Seitenteile 7b und 7c gezogen und an ihren äußeren Enden durch vorge­spannte Druckglieder 27 gedrückt, wobei die Zugglieder 26 und die Druckglieder 27 sich beide an den Seitenteilen 7b und 7c der Kassette 7 abstützen. Zur Erzeugung der vorgespannten Zug- und Druckkräfte dienen Pakete von Tellerfedern, die auf Zugstangen 26a bzw. Druckstangen 27a einwirken. Die Zugstangen 26a sind zugfest mit den Lagergehäusen 4 verbunden. Aufgrund der entgegengesetzt gerichteten Kräftepaare aus den Zugglie­dern 26 und den Druckgliedern 27 greifen an den Lagerge­häusen 4 Drehmomente an, die die Richtwalzen auch unter Leer­laufbedingungen an ihren Enden bis zur Anlage an den äußeren, an den Seitenteilen fixierten Stützrollen 15, 17 vorbiegen.It can be seen from the introductory description of the drawing that the outer groups of support rollers 15 and 17 are arranged on the pivotable side parts 7b, 7c and thus also assume the kink position shown in FIG. 4. These idler rollers 15, 17 would not rest against the straightening rollers 3 under idling conditions and would strike them when the straightening load occurred. So that any traces of such impacts are not transferred to the straightening material, the "Double Chock Bending" system is used for the bearing housing 4 of the straightening rollers 3 in order to pre-bend the outer ends of the straightening rollers 3 in the sense that they also run at idle speed Support rollers 15, 17 abut, which are also in a kink position relative to the central support rollers 13. In order to set such a pre-bending of the straightening rollers, the bearing housings 4 are pulled at their inner ends facing the straightening rollers 3 by prestressed second tension members 26 in the direction of the side parts 7b and 7c and pressed at their outer ends by prestressed pressure members 27, the tension members 26 and the pressure members 27 are both supported on the side parts 7b and 7c of the cassette 7. To generate the prestressed tensile and compressive forces, packets of disc springs are used which act on tie rods 26a and push rods 27a. The tie rods 26a are connected to the bearing housings 4 in a tensile manner. Due to the oppositely directed pairs of forces from the tension members 26 and the pressure members 27, 4 torques act on the bearing housings, which pre-bend the straightening rollers at their ends even under no-load conditions until they rest against the outer support rollers 15, 17 fixed to the side parts.

Zurückkommend auf Fig. 4 ist also sichergestellt, daß die Richtwalzen trotzt der divergierenden Lage der äußeren Stütz­rollen 15, 17 an diesen auch unter Leerlaufbedingungen an­liegen. Die vorteilhafte Funktion der unstarren Kassette 7 wird deutlich, wenn die dargestellte voll ausgezogene Knick­stellung durch Voranstellung der starren Auflagen 20 (über die Anstellvorrichtungen 6) und die Verstellposition der Verstellkeile 21a und 22a unter der Richtkraft und Aus­nutzung der Zwischengelenke 8 und 9 übergeht in die ge­strichelt dargestellte und sich aus Fig. 1 ergebende ge­streckte Lage der Kassette 7, in der dann auch zwangläufig alle Gruppen von Stützrollen 15, 13, 17 waagerecht fluchten und die Richtwalzen 3 gerade sind. Die Rückbiegung der vorge­bogenen Richtwalzen ist dabei in schonender Weise geringfügig, da sie sich nur an den Enden der Richtwalzen abspielt.Returning to FIG. 4, it is thus ensured that the straightening rollers defy the diverging position of the outer support rollers 15, 17 against them even under idle conditions. The advantageous function of the non-rigid cassette 7 becomes clear when the fully extended kink position shown by the forward positioning of the rigid supports 20 (via the adjusting devices 6) and the adjustment position of the adjusting wedges 21a and 22a under the directional force and utilization of the intermediate joints 8 and 9 changes into the dashed lines 1 and shown in FIG. 1, the extended position of the cassette 7, in which all the groups of support rollers 15, 13, 17 are then inevitably aligned horizontally and the straightening rollers 3 are straight. The backbend of the pre-bent straightening rollers is gentle in this case, since it only takes place at the ends of the straightening rollers.

Der Ausbau der Richtwalzen 3 nach rechts zum Nachschleifen der Richtwalzen ist bei der Konstruktion nach Fig. 1 in konventioneller Weise möglich, wenn die zugfesten Verbin­dungen zwischen den Zugstangen 26a der vorgespannten Zug­glieder 26 gelöst und die Druckstangen 27a der elastischen Druckglieder 27 gelüftet werden. Die hiermit verbundenen Handarbeiten können jedoch vermieden werden, wenn die ge­samte Kassette 7 samt Stützrollen und Ober- bzw. Unterwalzen als Wechselkassette ausgebildet wird. Wie für das vorge­spannte Zugglied 24 im einzelnen dargestellt, sind die Zug­glieder 23, 24 und 25 als Kolben-Zylinder-Einheiten ausge­bildet, deren Kolben 30 in Zugrichtung durch Tellerfedern 31 federbelastet und in entgegengesetzter Richtung von einem Druckmittel beaufschlagbar sind. Die Kolbenstangen 32 (Fig.3) durchgreifen die äußere Wandung der kastenförmigen Kassetten­teile in Langlöchern 33 und sind an den freien Enden mit die Zugkraft übertragenden Bunden 34 versehen. Die Lang­löcher 33 sind entgegen der Ausbaurichtung A der Kassette auf einen Durchmesser B erweitert, der größer ist als der Durchmesser des Bundes 34. In dieser Ausbaustellung wird das Querhaupt 2 durch die Anstellvorrichtungen 6 angehoben bzw. abgesenkt, so daß die obere bzw. die untere Kassette 7 samt den mit ihr verbundenen Teilen ausgebaut werden kann.The construction of the straightening rollers 3 to the right for regrinding the straightening rollers is possible in the construction according to FIG. 1 in a conventional manner if the tensile connections between the tension rods 26a of the prestressed tension members 26 are released and the pressure rods 27a of the elastic ones Pressure members 27 are released. The manual work associated with this can, however, be avoided if the entire cassette 7, including support rollers and upper and lower rollers, is designed as an exchangeable cassette. As shown in detail for the prestressed tension member 24, the tension members 23, 24 and 25 are designed as piston-cylinder units, the pistons 30 of which are spring-loaded in the pulling direction by plate springs 31 and can be acted upon by a pressure medium in the opposite direction. The piston rods 32 (FIG. 3) pass through the outer wall of the box-shaped cassette parts in elongated holes 33 and are provided at the free ends with collars 34 which transmit the tensile force. The elongated holes 33 are expanded against the direction of removal A of the cassette to a diameter B which is larger than the diameter of the collar 34. In this extended position, the crosshead 2 is raised or lowered by the adjusting devices 6, so that the upper or lower Cassette 7 together with the parts connected to it can be removed.

Claims (4)

1. Richtmaschine für Bleche und Bänder mit versetzt zueinander angeordneten oberen und unteren Richtwalzen, die über ihre Länge durch in Lagerböcken gelagerte Stützrollen abgestützt sind, die ihrerseits an Querhäuptern abgestützt sind, von denen mindestens das obere Querhaupt zur Positionierung der Richtwalzen anstellbar ist, mit Wechselkassetten zwischen den Querhäuptern und den Richtwalzen zum Wechseln je eines Satzes von Richtwalzen und Stützrollen, wobei die Stütz­rollen durch gelenkige Ausbildung der Wechselkassetten der­art in beiderseits der mittleren senkrechten Querebene der Querhäupter und Richtwalzen gelegenen Gruppen voreinstellbar sind, daß unter Berücksichtigung der Durchbiegung der Quer­häupter unter der Richtkraft die Richtwalzen-Durchbiegung kompensiert ist, d. h. die Richtwalzen beim Richten gerade sind,
dadurch gekennzeichnet, daß bei einer einstückigen Aus­führung der Querhäupter (2) die Wechselkassetten (7) aus drei, durch jeweils zwei Zwischengelenke (8, 9) miteinander verbundenen Teilen (7a, 7b, 7c) bestehen, die die Lager­böcke (12, 14, 16) der Gruppen von Stützrollen (13, 15, 17) tragen, daß das Mittelteil (7a) einer jeden Kassette im Be­reich seiner Enden symmetrisch zur mittleren Querebene (Q) der Querhäupter und Richtwalzen über zwei im Abstand von­einander angeordnete starre Auflagen (20) an dem zugehörigen Querhaupt abgestützt ist, und daß jedem äußeren, über ein Zwischengelenk mit dem Mittelteil verbundenen Seitenteil (7b, 7c) im Bereich der äußersten Stützrollen (15, 17) eine die Schwenklage des Seitenteils gegenüber dem zuge­hörigen Querhaupt begrenzende Stellvorrichtung (21, 22) zugeordnet ist.1. Straightening machine for sheets and strips with offset top and bottom straightening rollers, which are supported along their length by support rollers mounted in pedestals, which in turn are supported on crossheads, of which at least the upper crosshead can be adjusted to position the straightening rollers, with exchangeable cassettes between the crossheads and the straightening rollers for changing a set of straightening rollers and support rollers, whereby the support rollers can be preset in groups located on both sides of the central vertical transverse plane of the crossheads and straightening rollers by articulating the exchange cassettes in such a way that taking into account the deflection of the crossheads under the straightening force the straightening roll deflection is compensated, ie the straightening rolls are straight when straightening,
characterized in that, in the case of a one-piece design of the crossheads (2), the exchangeable cassettes (7) consist of three parts (7a, 7b, 7c) which are connected to one another by two intermediate joints (8, 9) and which form the bearing blocks (12, 14, 16) of the groups of support rollers (13, 15, 17) that the middle part (7a) of each cassette in the area of its ends symmetrically to the central transverse plane (Q) of the crossheads and straightening rollers over two spaced rigid supports (20) is supported on the associated crosshead, and in that each outer side part (7b, 7c) connected to the central part via an intermediate joint in the region of the outermost support rollers (15, 17) has an adjusting device (21, 22 that limits the pivoting position of the side part relative to the associated crosshead ) assigned. 2. Richtmaschine nach Anspruch 1,
dadurch gekennzeichnet, daß die Stellvorrichtungen aus sich quer zu den Richtwalzen (3) erstreckenden Verstell­keilen (21a, 22a) bestehen, die sich in jeder Verstell­position über die Länge der Kassette (7) - in Vorschub­richtung des Richtgutes gesehen - erstrecken, und daß die Kassetten durch an dem zugehörigen Querhaupt (2) fest­gelegte vorgespannte erste Zugglieder (23, 24, 25) gegen die starren Auflagen (20) und die Verstellkeile (21a, 22a) angedrückt sind.2. straightening machine according to claim 1,
characterized in that the adjusting devices consist of adjusting wedges (21a, 22a) which extend transversely to the straightening rollers (3) and which extend in each adjustment position over the length of the cassette (7) - as seen in the direction of advance of the straightening good - and that the cassettes are pressed against the rigid supports (20) and the adjusting wedges (21a, 22a) by means of prestressed first tension members (23, 24, 25) fixed on the associated crosshead (2). 3. Richtmaschine nach Anspruch 2,
dadurch gekennzeichnet, daß die Lagergehäuse (4) der Richtwalzen (3) an ihren inneren, den Richtwalzen zuge­wandten Enden durch an den gelenkbeweglichen Seitenteilen (7b, 7c) der Kassette (7) festgelegte vorgespannte zweite Zugglieder (26) in Richtung der Seitenteile gezogen sind und an ihren äußeren Enden unter dem Einfluß von vorge­spannten Druckgliedern(27) stehen, die sich an den Seiten­teilen abstützen und eine Druckkraft auf die Lagergehäuse ausüben, so daß an den Lagergehäusen Drehmomente angreifen, die die Richtwalzen auch unter Leerlaufbedingungen an ihren Enden bis zur Anlage an den äußeren, an den Seiten­teilen fixierten Stützrollen (15, 17) vorbiegen.3. straightening machine according to claim 2,
characterized in that the bearing housings (4) of the straightening rollers (3) are pulled in the direction of the side parts at their inner ends facing the straightening rollers by means of prestressed second tension members (26) fixed to the articulated side parts (7b, 7c) of the cassette (7) and at their outer ends under the influence of prestressed pressure members (27), which are supported on the side parts and exert a compressive force on the bearing housings, so that torques act on the bearing housings that the straightening rollers also end up at the ends under idle conditions Bend forward on the outer support rollers (15, 17) fixed to the side parts. 4. Richtmaschine nach Anspruch 3,
dadurch gekennzeichnet, daß die vorgespannten ersten Zug­glieder (23, 24, 25) aus Kolben-Zylinder-Einheiten be­stehen, deren Kolben (30) in Zugrichtung federbelastet (31) und in entgegengesetzter Richtung von einem Druck­mittel beaufschlagbar sind, daß die die äußeren Wandungen der kastenförmigen Kassettenteile (7a, 7b, 7c) in Lang­löchern (33) durchgreifenden Kolbenstangen (32) an den freien Enden mit die Zugkraft übertragenden Bunden (34) versehen sind, und daß alle Langlöcher entgegen der Aus­baurichtung (A) der Kassette (7) auf einen Durchmesser (B) erweitert sind, der größer ist als der Durchmesser der Bunde der Kolbenstangen.4. straightening machine according to claim 3,
characterized in that the prestressed first tension members (23, 24, 25) consist of piston-cylinder units, the pistons (30) of which are spring-loaded in the pulling direction (31) and can be acted upon by a pressure medium in the opposite direction, such that the outer walls of the box-shaped cassette parts (7a, 7b, 7c) in piston rods (32) which pass through elongated holes (33) are provided at the free ends with bundles (34) which transmit the tensile force, and that all elongated holes counter to the direction of removal (A) of the cassette (7) are expanded a diameter (B) which is larger than the diameter of the collars of the piston rods.
EP87118938A 1987-01-10 1987-12-21 Straightening machine for plate and strips Expired - Lifetime EP0274722B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87118938T ATE67696T1 (en) 1987-01-10 1987-12-21 LEVELING MACHINE FOR SHEET AND TAPE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3700555 1987-01-10
DE19873700555 DE3700555A1 (en) 1987-01-10 1987-01-10 LEVELING MACHINE FOR SHEETS AND TAPES

Publications (3)

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EP0274722A2 true EP0274722A2 (en) 1988-07-20
EP0274722A3 EP0274722A3 (en) 1989-12-20
EP0274722B1 EP0274722B1 (en) 1991-09-25

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EP87118938A Expired - Lifetime EP0274722B1 (en) 1987-01-10 1987-12-21 Straightening machine for plate and strips

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US (1) US4811586A (en)
EP (1) EP0274722B1 (en)
JP (1) JPS63180324A (en)
AT (1) ATE67696T1 (en)
DE (2) DE3700555A1 (en)
ES (1) ES2025131B3 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0570770A1 (en) * 1992-05-21 1993-11-24 Sms Schloemann-Siemag Aktiengesellschaft Method and machine for straightening plates and strips
EP0615797A1 (en) * 1993-03-19 1994-09-21 Sms Schloemann-Siemag Aktiengesellschaft Straightening machine, particularly to straighten plates and strips
FR2718661A1 (en) * 1994-04-15 1995-10-20 Clecim Sa Double-roller planing machine tool for corrugating metal sheet
WO1996032212A1 (en) * 1995-04-14 1996-10-17 Clecim Levelling machine with overlapping rollers, and method for using same
FR2732913A1 (en) * 1995-04-14 1996-10-18 Clecim Sa Levelling machine for levelling flat products in a continuous strip mill
CN103551437A (en) * 2013-10-31 2014-02-05 武汉钢铁(集团)公司 Microstress hectometer high-speed heavy rail production method

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4218138A1 (en) * 1992-06-02 1993-12-09 Schloemann Siemag Ag Roller adjustment device
DE4333880C2 (en) * 1993-10-05 2003-03-06 Sms Demag Ag roller bearing
US5461895A (en) * 1993-12-09 1995-10-31 Danieli United, Inc. High capacity hydraulic leveller
US7637132B2 (en) * 2006-02-06 2009-12-29 Butech Bliss Work roll scraper for roller levelers
DE202007015406U1 (en) * 2007-09-27 2008-02-14 Kohler Maschinenbau Gmbh Removable cassette arrangement for a straightening machine and straightening machine
DE102015216387A1 (en) * 2015-08-27 2017-03-02 Sms Group Gmbh Straightening machine with modular exchangeable cassette system
CN113877988A (en) * 2021-10-14 2022-01-04 中冶南方工程技术有限公司 Roll bending adjusting device of straightening machine

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB326033A (en) * 1929-03-21 1930-03-06 Ungerer Fritz An adjustable supporting mechanism for straightening rolls of plate straightening machines
GB432258A (en) * 1935-02-11 1935-07-23 Friedrich Karl Maeussnest Improvements in sheet and plate straightening machine
DE631997C (en) * 1934-01-16 1936-07-01 Sack Gmbh Maschf Plate leveler
US2219163A (en) * 1937-04-30 1940-10-22 Friedrich K Maussnest Sheet straightening machine
US2491782A (en) * 1948-07-26 1949-12-20 United Eng Foundry Co Apparatus for straightening strip material
US2945530A (en) * 1955-11-04 1960-07-19 Frederick K Maust Method of treating sheet and strip material
US3301031A (en) * 1964-06-23 1967-01-31 Voss Engineering Company Roller leveler
DE1809638A1 (en) * 1967-11-21 1969-07-17 Davy & United Eng Co Ltd Device for processing sheet metal or strip material
DE2747331A1 (en) * 1977-10-21 1979-04-26 Schloemann Siemag Ag Supporting roller adjusting mechanism on cross beam - has pair of wedges extending across all roller bearings
EP0005760A1 (en) * 1978-06-02 1979-12-12 Sms Schloemann-Siemag Aktiengesellschaft Straightening machine for sheets and strips
EP0035009A1 (en) * 1980-02-21 1981-09-02 VOEST-ALPINE Aktiengesellschaft Device for supporting the working roll of a sheet bending or levelling machine
US4454738A (en) * 1981-06-29 1984-06-19 The Paxson Machine Company Roller leveler and method of operating same
DE3337957A1 (en) * 1983-10-19 1985-05-02 SMS Schloemann-Siemag AG, 4000 Düsseldorf Sheet leveller

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2132426A (en) * 1935-09-04 1938-10-11 Hedweg Maussnest Method and apparatus for straightening sheet material
US2429142A (en) * 1944-05-12 1947-10-14 Youngstown Foundry And Machine Roller leveler machine
US2949147A (en) * 1955-12-30 1960-08-16 Frederick K Maust Roller leveler with driven backup rolls

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB326033A (en) * 1929-03-21 1930-03-06 Ungerer Fritz An adjustable supporting mechanism for straightening rolls of plate straightening machines
DE631997C (en) * 1934-01-16 1936-07-01 Sack Gmbh Maschf Plate leveler
GB432258A (en) * 1935-02-11 1935-07-23 Friedrich Karl Maeussnest Improvements in sheet and plate straightening machine
US2219163A (en) * 1937-04-30 1940-10-22 Friedrich K Maussnest Sheet straightening machine
US2491782A (en) * 1948-07-26 1949-12-20 United Eng Foundry Co Apparatus for straightening strip material
US2945530A (en) * 1955-11-04 1960-07-19 Frederick K Maust Method of treating sheet and strip material
US3301031A (en) * 1964-06-23 1967-01-31 Voss Engineering Company Roller leveler
DE1809638A1 (en) * 1967-11-21 1969-07-17 Davy & United Eng Co Ltd Device for processing sheet metal or strip material
DE2747331A1 (en) * 1977-10-21 1979-04-26 Schloemann Siemag Ag Supporting roller adjusting mechanism on cross beam - has pair of wedges extending across all roller bearings
EP0005760A1 (en) * 1978-06-02 1979-12-12 Sms Schloemann-Siemag Aktiengesellschaft Straightening machine for sheets and strips
EP0035009A1 (en) * 1980-02-21 1981-09-02 VOEST-ALPINE Aktiengesellschaft Device for supporting the working roll of a sheet bending or levelling machine
US4454738A (en) * 1981-06-29 1984-06-19 The Paxson Machine Company Roller leveler and method of operating same
DE3337957A1 (en) * 1983-10-19 1985-05-02 SMS Schloemann-Siemag AG, 4000 Düsseldorf Sheet leveller

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0570770A1 (en) * 1992-05-21 1993-11-24 Sms Schloemann-Siemag Aktiengesellschaft Method and machine for straightening plates and strips
EP0615797A1 (en) * 1993-03-19 1994-09-21 Sms Schloemann-Siemag Aktiengesellschaft Straightening machine, particularly to straighten plates and strips
FR2718661A1 (en) * 1994-04-15 1995-10-20 Clecim Sa Double-roller planing machine tool for corrugating metal sheet
US5680785A (en) * 1994-04-15 1997-10-28 Clecim Metal strip planishing installation
WO1996032212A1 (en) * 1995-04-14 1996-10-17 Clecim Levelling machine with overlapping rollers, and method for using same
FR2732912A1 (en) * 1995-04-14 1996-10-18 Clecim Sa Nested roller planer
FR2732913A1 (en) * 1995-04-14 1996-10-18 Clecim Sa Levelling machine for levelling flat products in a continuous strip mill
CN103551437A (en) * 2013-10-31 2014-02-05 武汉钢铁(集团)公司 Microstress hectometer high-speed heavy rail production method
CN103551437B (en) * 2013-10-31 2016-08-17 武汉钢铁(集团)公司 A kind of hundred meters of high speed heavy rail production methods of microstress

Also Published As

Publication number Publication date
DE3773360D1 (en) 1991-10-31
EP0274722A3 (en) 1989-12-20
DE3700555A1 (en) 1988-07-21
EP0274722B1 (en) 1991-09-25
JPS63180324A (en) 1988-07-25
ATE67696T1 (en) 1991-10-15
US4811586A (en) 1989-03-14
ES2025131B3 (en) 1992-03-16

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