EP0192982B1 - Apparatus for advancing rolled strip - Google Patents

Apparatus for advancing rolled strip Download PDF

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Publication number
EP0192982B1
EP0192982B1 EP86101127A EP86101127A EP0192982B1 EP 0192982 B1 EP0192982 B1 EP 0192982B1 EP 86101127 A EP86101127 A EP 86101127A EP 86101127 A EP86101127 A EP 86101127A EP 0192982 B1 EP0192982 B1 EP 0192982B1
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EP
European Patent Office
Prior art keywords
rocker
cylinders
roller
drive roller
hydraulic
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
EP86101127A
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German (de)
French (fr)
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EP0192982A3 (en
EP0192982A2 (en
Inventor
Martin Braun
Crispin Bujok
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
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Publication date
Application filed by SMS Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Publication of EP0192982A2 publication Critical patent/EP0192982A2/en
Publication of EP0192982A3 publication Critical patent/EP0192982A3/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/34—Feeding or guiding devices not specially adapted to a particular type of apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/34—Feeding or guiding devices not specially adapted to a particular type of apparatus
    • B21C47/3408—Feeding or guiding devices not specially adapted to a particular type of apparatus for monitoring the lateral position of the material
    • B21C47/3425—Feeding or guiding devices not specially adapted to a particular type of apparatus for monitoring the lateral position of the material without lateral edge contact
    • 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
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/08—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by rollers
    • B21D43/09—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by rollers by one or more pairs of rollers for feeding sheet or strip material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H20/00—Advancing webs
    • B65H20/02—Advancing webs by friction roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/006—Pinch roll sets

Definitions

  • the upper drive roller is floatingly mounted in guides of the rocker arm.
  • the lower drive roller is fixed in the stand in the horizontal position, and the upper drive roller is held down by a pneumatic cylinder on the drive and operating side, whereby its axial position can be freely adjusted to the rolled strip.
  • the pneumatic cylinders connected to the upper drive roller are referred to as control cylinders and are infinitely adjustable in pneumatic pressure.
  • the minimum contact force corresponds to the weight of the upper drive roller or a smaller force if the control cylinder is not pressurized with compressed air, if the drive roller gap is set so that after the rolling band has entered the drive roller gap only part of the elastic deflection of the rocker and the drive rollers is canceled becomes.
  • a drive apparatus for rolled strip in particular of strip reels in broadband rolling mills of the above type, which has two driving rollers arranged in parallel one above the other, which are set relative to one another by gap spindle gears for presetting to different strip thicknesses.
  • the upper drive roller is mounted in a rocker and the bearing housing of this drive roller are displaceably held independently of one another parallel to the plane of motion of the rocker, while the lower drive roller is guided and supported by compensating devices in the frame or in the frame.
  • the object of the invention is to provide a drive apparatus, in particular for hot strip reels, which, while avoiding the known difficulties and disadvantages, enables optimum control of the drive rollers with respect to the strip travel.
  • the contact pressure should be optimally adjustable even after the tape tension has been built up.
  • the pivotable, adjustable bearing of the drive roller there is very advantageously the possibility, if necessary, of lifting the drive roller on one side by a small amount and thereby influencing the belt run.
  • the swivel amount is measured by the position transmitter, and the swivel of the drive roller is controlled as a function of the measurement amount.
  • the pressure of the hydraulic control cylinder detected and thereby the contact pressure of the drive rollers can be optimally adjusted.
  • the hydraulic balancing cylinders are provided with pressure sensors according to a further advantageous embodiment of the invention.
  • the lower drive roller 1 lies in the normal position on two pressure pieces 2 and 3, which ensure that the drive roller 1 is in a horizontal position. So that the play in the receiving pocket of the stand 5 cannot influence the position of the lower drive roller 1, the bearing housings 6, 7 designed as chocks are arranged with the aid of hydraulic cylinders 8 arranged in the stand 5 and acting approximately horizontally on the bearing housings 6 and 7 pressed the guide surface 9, on which the bearing housings 6, 7 rest after the band tension has been built up between the reel mandrel (not shown in the drawing) and the drive apparatus.
  • the contact pressure of the drive rollers 1 and 15 is set on the hydraulic control cylinders 23, 24 via a predetermined pressure, which is detected by actual pressure sensors 29, 30.
  • the hydraulic control cylinders 23, 24 are equipped with the position transmitters 25, 26 for setting the drive roller gap 28, which enable precise position control of the upper drive roller 15.
  • the drive roller gap 28 must be smaller than the strip thickness so that a contact pressure can build up.
  • the signals from the two pressure actual value transmitters 29, 30 indicate the contact pressure for the drive and operating side of the drive rollers 1, 15.
  • the driving device thus enables optimal control with regard to the strip running, in particular also of very thin strips for hot strip reels.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
  • Winding Of Webs (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)

Description

Die Erfindung bezieht sich auf einen Treibapparat für Walzband, insbesondere für Warmbandhaspeln in Breitband- Walzenstraßen, bestehend aus wenigstens zwei in einem Ständer parallel übereinander angeordneten Treibrollen mit Spalteinstellung, wobei die obere Treibrolle über ihre Lagergehäuse mit und hydraulische Steurzylinder verbunden ist, an der Druckmittelzylinder zur Einstellung der Rollen- Anpreßkraft angeordnet sind, und wobei die Lagergehäuse unabhängig voneinander, parallel zur Bewegungsebene der Schwinge verlagerbar an dieser gehalten sind.The invention relates to a drive apparatus for rolled strip, in particular for hot strip reels in broadband rolling mills, consisting of at least two drive rollers arranged in parallel in a stand, one above the other, with gap adjustment, the upper drive roller being connected via its bearing housing to hydraulic jack cylinders to the pressure medium cylinder Setting the roller contact pressure are arranged, and wherein the bearing housing are held independently of one another, parallel to the plane of movement of the rocker on this.

Bei bisher bekannten Treibapparaten für Walzbänder ist die obere Treibrolle schwimmend in Führungen der Schwinge gelagert. Die untere Treibrolle ist im Ständer fest in der Horizontallage gelagert, und die obere Treibrolle wird durch je einen Pneumatikzylinder auf der Antriebs- und Bedienungsseite niedergehalten, wobei sich ihre Achslage frei zum Walzband einstellen kann. Die mit der oberen Treibrolle in Verbindung stehenden Pneumatikzylinder werden als Steuerzylinder bezeichnet und sind im Pneumatikdruck stufenlos einstellbar. Die minimale Anpreßkraft entspricht bei nicht mit Druckluft beaufschlagten Steuerzylindern entweder dem Gewicht der oberen Treibrolle oder einer kleineren Kraft, wenn der Treibrollenspalt so eingestellt wird, daß nach Einlauf des Walzbandes in den Treibrollenspalt lediglich ein Teil der elastischen Durchbiegung der Schwinge und der Treibrollen aufgehoben wird. Insbesondere bei dünnen Walzbändern ist die Einstellung des Treibrollenspaltes schwierig, da geringe Dickenunterschiede etc. der Walzbänder die Größe der Anpreßkraft sehr stark verändern können. Es hat sich jedoch in der Praxis gezeigt, daß insbesondere die dünnen Walzbänder mit geringer Anpreßkraft gewickelt werden müssen, damit das Band nicht verläuft. Im Betrieb derartiger Treibapparate wird die obere Treibrolle beim Einlauf des Walzbandes in den Treibrollenspalt angehoben, wobei sie sich in ihrer Achslage frei zum Band einstellen kann. Unterschiedliche Reibungen zwischen der Antriebs- und Bedienungsseite in den Führungen der oberen Treibrolle und den Pneumatikzylindern können jedoch dazu führen, daß sich die Treibrolle beim Anheben schräg stellt und nicht die vom Band gewünschte Lage einnimmt. Dies kann die Ursache für das Verlaufen des Bandes sein. Ein weiteres zusätzliches Problem bei diesem Treibapparatsystem besteht darin, daß - bezogen auf die Kennlinie von Anpreßkraft und Treibrollen-Lastspalt - das Spiel der Lagerung der oberen Treibrolle durchfahren werden muß, wenn die Anpreßkraft größer als das Treibrollengewicht sein sollte.In previously known drive devices for rolled strips, the upper drive roller is floatingly mounted in guides of the rocker arm. The lower drive roller is fixed in the stand in the horizontal position, and the upper drive roller is held down by a pneumatic cylinder on the drive and operating side, whereby its axial position can be freely adjusted to the rolled strip. The pneumatic cylinders connected to the upper drive roller are referred to as control cylinders and are infinitely adjustable in pneumatic pressure. The minimum contact force corresponds to the weight of the upper drive roller or a smaller force if the control cylinder is not pressurized with compressed air, if the drive roller gap is set so that after the rolling band has entered the drive roller gap only part of the elastic deflection of the rocker and the drive rollers is canceled becomes. In the case of thin rolled strips in particular, the setting of the drive roller gap is difficult, since small differences in thickness, etc., of the rolled strips can change the size of the contact force very strongly. However, it has been shown in practice that in particular the thin rolled strips have to be wound with low contact pressure so that the strip does not run. In the operation of such traction devices, the upper traction roller is raised when the rolled strip runs into the traction roller gap, whereby it can freely adjust to the strip in its axial position. Different friction between the drive and operating side in the guides of the upper drive roller and the pneumatic cylinders can, however, lead to the fact that the drive roller is inclined when lifting and does not assume the position desired by the belt. This may be the cause of the tape running. Another additional problem with this drive apparatus system is that - based on the characteristic of the contact pressure and the drive roller load gap - the clearance of the bearing of the upper drive roller must be run through if the contact pressure should be greater than the drive roller weight.

Aus der DE-OS 26 14 254 ist ein Treibapparat für Walzband, insbesondere von Bandhaspeln in Breitbandwalzenstraßen obiger Bauart bekannt, der zwei parallel übereinander angeordnete Treibrollen aufweist, die zur Voreinstellung auf verschiedene Banddicken durch Hubspindelgetriebe relativ zueinander auf Spaltabstand gebracht werden. Die obere Treibrolle ist in einer Schwinge gelagert und die Lagergehäuse dieser Treibrolle sind unabhängig voneinander parallel zur Bewegungsebene der Schwinge verlagerbar an dieser gehalten, während die untere Treibrolle über Ausgleichsvorrichtungen im Rahmen bzw. im Gestell geführt und gelagert wird.From DE-OS 26 14 254 a drive apparatus for rolled strip, in particular of strip reels in broadband rolling mills of the above type, is known, which has two driving rollers arranged in parallel one above the other, which are set relative to one another by gap spindle gears for presetting to different strip thicknesses. The upper drive roller is mounted in a rocker and the bearing housing of this drive roller are displaceably held independently of one another parallel to the plane of motion of the rocker, while the lower drive roller is guided and supported by compensating devices in the frame or in the frame.

Aus der GB-A- 2 138 180 ist es bekannt, daß bei Walzgerüsten die untere Stützwalze in einem Quarto-Gerüst im Ständer beweglich verstellbar gelagert ist und die Lagergehäuse der unteren Stützwalze mit in etwa vertikaler Richtung betätigbaren hydraulischen Druckmittelzylindern und Positionsgebern in Verbindung stehen. Ein Hinweis auf mit der eigenen Erfindung gattungsgleiche Treibapparate ist nicht erkennbar.From GB-A-2 138 180 it is known that in the case of rolling stands, the lower support roller is movably adjustable in a four-high stand in the stand and the bearing housing of the lower support roller is connected to hydraulic pressure medium cylinders and position sensors which can be actuated in an approximately vertical direction. There is no discernible reference to propellants of the same type as the invention.

Die Aufgabe der Erfindung besteht darin, einen Treibapparat, insbesondere für Warmbandhaspel zu schaffen, der unter Vermeidung der bekannten Schwierigkeiten und Nachteile eine optimale Steuerung der Treibrollen bezüglich des Bandlaufs ermöglicht. Insbesondere soll auch nach Aufbau des Bandzuges die Anpreßkraft optimal einstellbar sein.The object of the invention is to provide a drive apparatus, in particular for hot strip reels, which, while avoiding the known difficulties and disadvantages, enables optimum control of the drive rollers with respect to the strip travel. In particular, the contact pressure should be optimally adjustable even after the tape tension has been built up.

Diese Aufgabe wird dadurch gelöst,

  • a) daß die untere Treibrolle gegenüber der mit der Schwinge verbundenen oberen Treibrolle im Ständer schwenkbeweglich verstellbar gelagert ist,
  • b) daß die Lagergehäuse der unteren Treibrolle mit in etwa vertikaler Richtung unabhängig voneinander betätigbaren hydraulischen Druckmittel-Schwenkzylindern und Positionsgebern in Verbindung stehen,
  • c) daß die untere Treibrolle zwecks schwenkbeweglicher Verstellung gegenüber der oberen Treibrolle über Lagergehäuse im Ständer mit in etwa horizontaler Richtung wirkenden Druckmittelzylindern verbunden ist,
  • d) daß die obere Treibrolle mit der Schwinge über hydraulische Steuerzylinder mit Druckistwertgebern in Verbindung steht.
This task is solved by
  • a) that the lower drive roller is pivotably movable in the stand relative to the upper drive roller connected to the rocker,
  • b) that the bearing housing of the lower drive roller with hydraulic pressure medium swivel cylinders which can be actuated independently of one another in approximately the vertical direction and position transmitters,
  • c) that the lower drive roller is connected to the approximately horizontal direction of the pressure medium cylinders for the purpose of pivoting adjustment relative to the upper drive roller via bearing housings in the stand,
  • d) that the upper drive roller is connected to the rocker via hydraulic control cylinders with pressure feedback sensors.

Durch die schwenkbewegliche verstellbare Lagerung der Treibrolle besteht sehr vorteilhaft die Möglichkeit, im Bedarfsfalle die Treibrolle einseitig um einen geringen Betrag anzuheben und dadurch den Bandlauf zu beeinflußen. Der Schwenkbetrag wird hierbei durch die Positionsgeber gemessen, und die Schwenkung der Treibrolle in Abhängigkeit des Meßbetrages gesteuert. Durch die in etwa horizontaler Richtung auf die Lagergehäuse der unteren Treibrolle wirkenden hydraulischen Druckmittelzylinder können sehr vorteilhaft die Lager im Ständer an die Führungsfläche gedrückt werden, an der die Lager auch nach Aufbau des Bandzuges zwischen Haspeldorn und Treibapparat anliegen, wodurch Spiele zwischen Lagergehäuse und Ständer, die sich auf die Lage der Treibrolle und damit auf den Bandlauf nachteilig auswirken können, vorteilhaft vermieden werden. Mit Hilfe der Druck-Istwertgeber an den hydraulischen Steuerzylindern, über die die obere Treibrolle mit der Schwinge in Verbindung steht, kann sehr vorteilhaft der Druck der hydraulischen Steuerzylinder erfaßt und dadurch die Anpreßkraft der Treibrollen optimal eingestellt werden.Due to the pivotable, adjustable bearing of the drive roller, there is very advantageously the possibility, if necessary, of lifting the drive roller on one side by a small amount and thereby influencing the belt run. The swivel amount is measured by the position transmitter, and the swivel of the drive roller is controlled as a function of the measurement amount. Due to the approximately horizontal direction of the hydraulic pressure medium cylinders acting on the bearing housing of the lower drive roller, the bearings in the stand can be pressed very advantageously against the guide surface, on which the bearings rest even after the band tension between the reel mandrel and the drive device, thereby causing play between the bearing housing and stand, which can have an adverse effect on the position of the drive roller and thus on the belt run can advantageously be avoided. With the help of the actual pressure sensors on the hydraulic control cylinders, via which the upper drive roller is connected to the rocker, the pressure of the hydraulic control cylinder detected and thereby the contact pressure of the drive rollers can be optimally adjusted.

In vorteilhafter Weiterbildung der Erfindung sind an der Schwinge hydraulische Ausbalancierungszylinder angeordnet, die über eigene Lagergehäuse an der oberen Treibrolle angreifen. Mittels der hydraulischen Ausbalancierungszylinder kann sehr vorteilhaft das Gewicht der oberen Treibrolle so ausbalanciert werden, daß der von den Steuerzylindern aufgebrachte Druck - unabhängig vom Spiel der Rollenlagerung - stets und mit Sicherheit in Kraftrichtung der Rollenanpreßkraft wirkt.In an advantageous development of the invention, hydraulic balancing cylinders are arranged on the rocker arm, which act on the upper drive roller via their own bearing housings. By means of the hydraulic balancing cylinders, the weight of the upper drive roller can be very advantageously balanced so that the pressure applied by the control cylinders - regardless of the play of the roller bearings - always and safely acts in the direction of the force of the roller contact pressure.

Um auf den für die Ausbalancierung der oberen Treibrolle jeweils erforderlichen Hydraulikdruck Einfluß nehmen zu können, sind gemäß einer weiteren vorteilhaften Ausgestaltung der Erfindung die hydraulischen Ausbalancierungszylinder mit Druckgebern versehen.In order to be able to influence the hydraulic pressure required for the balancing of the upper drive roller, the hydraulic balancing cylinders are provided with pressure sensors according to a further advantageous embodiment of the invention.

Nach einer weiteren vorteilhaften Ausgestaltung der Erfindung sind zur Ermittlung der Position der Lagergehäuse der oberen Treibrolle und damit zur Einstellung des Rollenspaltes an der Schwinge Positionsgeber angeordnet.According to a further advantageous embodiment of the invention, position sensors are arranged on the rocker arm to determine the position of the bearing housing of the upper drive roller and thus to adjust the roller gap.

Weitere Einzelheiten, Merkmale und Vorteile der Erfindung ergeben sich aus den nachfolgenden Erläuterungen eines in der Zeichnung schematisch dargestellten Ausführungsbeispiels.Further details, features and advantages of the invention result from the following explanations of an exemplary embodiment shown schematically in the drawing.

Es zeigen:

Fig. 1
einen Treibapparat gemäß der Erfindung im Längsschnitt
Fig. 2
eine Seitenansicht des Treibapparates gemäß Fig. 1
Show it:
Fig. 1
a propellant according to the invention in longitudinal section
Fig. 2
2 shows a side view of the driving apparatus according to FIG. 1

Wie die Figuren 1 und 2 zeigen, liegt die untere Treibrolle 1 in der Normalstellung auf zwei Druckstücken 2 und 3 auf, die eine Horizontallage der Treibrolle 1 gewährleisten. Damit das Spiel in der Aufnahmetasche des Ständers 5 die Lage der unteren Treibrolle 1 nicht beeinflussen kann, werden die als Einbaustücke ausgebildeten Lagergehäuse 6, 7 mit Hilfe von im Ständer 5 angeordneten, etwa in horizontaler Richtung auf die Lagergehäuse 6 und 7 wirkenden Hydraulikzylinder 8 an die Führungsfläche 9 gedrückt, an der auch die Lagergehäuse 6, 7 nach Aufbau des Bandzuges zwischen dem in der Zeichnung nicht näher dargestellten Haspeldorn und dem Treibapparat anliegen. Wenn nun beim Wickeln des Bandes 10 ein Verlaufen der Windungen beobachtet bzw. festgestellt wird, zum Beispiel durch ein säbelförmiges Band, besteht hierbei sehr vorteilhaft die Möglichkeit, mit Hilfe der unabhängig voneinander betätigbaren antriebs- oder bedienungsseitigen hydraulischen Druckmittel- Schwenkzylinder 11 und 12, die untere Treibrolle 1 um einen geringen Betrag einseitig anzuheben und dadurch den Lauf des Bandes 10 zu beeinflussen, beziehungsweise den Verlauf zu korrigieren. Der Schwenkbetrag wird hierbei sehr vorteilhaft durch Positionsgeber 13 bzw. 14 gemessen und die Schwenkung der Treibrolle 1 in Abhängigkeit des Meßwertes über die hydraulischen Druckmittel- Schwenkzylinder 11 bzw. 12 gesteuert, die mit einer in der Zeichnung nicht näher dargestellten Positionsregelung ausgerüstet sind.As FIGS. 1 and 2 show, the lower drive roller 1 lies in the normal position on two pressure pieces 2 and 3, which ensure that the drive roller 1 is in a horizontal position. So that the play in the receiving pocket of the stand 5 cannot influence the position of the lower drive roller 1, the bearing housings 6, 7 designed as chocks are arranged with the aid of hydraulic cylinders 8 arranged in the stand 5 and acting approximately horizontally on the bearing housings 6 and 7 pressed the guide surface 9, on which the bearing housings 6, 7 rest after the band tension has been built up between the reel mandrel (not shown in the drawing) and the drive apparatus. If, during winding of the band 10, a course of the windings is observed or ascertained, for example by a saber-shaped band, there is very advantageously the possibility, with the help of the independently actuatable drive or operator-side hydraulic pressure medium pivot cylinders 11 and 12, that lower drive roller 1 to one side to raise a small amount and thereby influence the running of the belt 10, or correct the course. The pivoting amount is very advantageously measured by position transmitters 13 and 14 and the pivoting of the drive roller 1 is controlled as a function of the measured value via the hydraulic pressure medium pivoting cylinders 11 and 12, which are equipped with a position control not shown in the drawing.

Das Gewicht der oberen Treibrolle 15 wird sehr vorteilhaft durch zwei hydraulische Ausbalancierungszylinder 16 und 17, die an der Schwinge 18 angeordnet sind, und die über eigene Lagergehäuse 19, 20 an der Treibrolle 15 angreifen, ausbalanciert. Damit das Spiel der Treibrollenlagerung immer mit Sicherheit in Kraftrichtung der Rollenanpreßkraft herausgedrückt wird, müssen die Ausbalancierungszylinder 16, 17 mit einer Überbalancierung beaufschlagt werden. Durch diese Ausbalancierung kann unabhängig vom Arbeitsbereich des Treibers die Position der oberen Treibrolle 15 und die Position sowohl der Lagergehäuse 19, 20 als auch die der Lagergehäuse 21, 22, die mit dem an der Schwinge 18 angeordneten hydraulischen Steuerzylindern 23, 24 in Wirkverbindung stehen, gleichgesetzt werden. Auf diese Weise ist es möglich, die Lage der oberen Treibrolle 15 zur Lage der Schwinge 18 über an der Schwinge 18 angeordnete Positionsgeber 25, 26 sicher und genau zu erfassen. Da die Schwinge 18 auf festen Anschlägen 27 des Ständers 5 aufliegt, geben die Positionsgeber 25, 26 die genaue Größe des Treibrollenspaltes 28 wieder.The weight of the upper drive roller 15 is very advantageously balanced by two hydraulic balancing cylinders 16 and 17 which are arranged on the rocker 18 and which engage the drive roller 15 via their own bearing housings 19, 20. So that the play of the drive roller bearing is always pushed out with certainty in the direction of force of the roller contact pressure, the balancing cylinders 16, 17 must be subjected to overbalancing. Through this balancing, the position of the upper drive roller 15 and the position of both the bearing housings 19, 20 and that of the bearing housings 21, 22, which are in operative connection with the hydraulic control cylinders 23, 24 arranged on the rocker 18, are equated. In this way, it is possible to detect the position of the upper drive roller 15 relative to the position of the rocker 18 securely and precisely via position sensors 25, 26 arranged on the rocker 18. Since the rocker 18 rests on fixed stops 27 of the stand 5, the position sensors 25, 26 indicate the exact size of the drive roller gap 28.

Im Betrieb des Treibapparates gemäß der Erfindung wird die Anpreßkraft der Treibrollen 1 und 15 über einen vorgegebenen Druck, der durch Druckistwertgeber 29, 30 erfaßt wird, an den hydraulischen Steuerzylindern 23, 24 eingestellt. Die hydraulischen Steuerzylinder 23, 24 sind zur Einstellung des Treibrollenspaltes 28 mit den Positionsgebern 25, 26 ausgerüstet, die eine genaue Positionsregelung der oberen Treibrolle 15 ermöglicht. Bei Einlauf des Walzbandes 10 in den Treibapparat muß der Treibrollenspalt 28 kleiner sein als die Banddicke, damit sich eine Anpreßkraft aufbauen kann. Um Druckspitzen in den Treibrollenspalt 28 abzubauen, ist es zweckmäßig, das hydraulische Drucksystem mit einem Hydraulikspeicher auszustatten. Nachdem das Walzband 10 in den Treibrollenspalt 28 des Treibapparates eingelaufen ist, werden die hydraulischen Steuerzylinder 23, 24, die mit eigenen Druckistwertgebern 29, 30 und mit eigenen Druckregelungen versehen sind, auf Druckregelung umgeschaltet. Mit Hilfe dieser Druckregelungen kann durch unterschiedliche Beaufschlagung der beiden hydraulischen Steuerzylinder 23, 24 sehr vorteilhaft die Laufrichtung des Bandes beeinflußt werden. Kurz vor Austritt des Bandendes muß von Druckregelung auf Positionsregelung umgeschaltet werden. Die Signale der beiden Druckistwertgeber 29, 30 geben die Anpreßkraft für die Antriebs- und Bedienungsseite der Treibrollen 1, 15 an. Wie hierzu insbesondere aus Figur 2 zu ersehen ist, werden die Lagergehäuse 21, 22 der oberen Treibrolle 15 sowohl durch die Horizontalkomponente Fh 31 der Anpreßkraft F als auch durch den Bandzug zwischen dem in der Zeichnung nicht dargestellten Haspeldorn und dem Treibapparat gegen die dem in der Zeichnung ebenfalls nicht näher dargestellten Haspel zugewandten Seite 32 der Lagergehäuseführung 33 gedrückt. Dadurch ist in jedem Falle eine genau definierte Lage der Lagergehäuse 21, 22 und damit die genaue Lage der oberen Treibrolle 15 gewährleistet. Ein besonderer hydraulischer Spannzylinder ist daher für die obere Treibrolle 15 nicht erforderlich.In the operation of the drive apparatus according to the invention, the contact pressure of the drive rollers 1 and 15 is set on the hydraulic control cylinders 23, 24 via a predetermined pressure, which is detected by actual pressure sensors 29, 30. The hydraulic control cylinders 23, 24 are equipped with the position transmitters 25, 26 for setting the drive roller gap 28, which enable precise position control of the upper drive roller 15. When the rolled strip 10 enters the drive apparatus, the drive roller gap 28 must be smaller than the strip thickness so that a contact pressure can build up. In order to reduce pressure peaks in the drive roller gap 28, it is expedient to equip the hydraulic pressure system with a hydraulic accumulator. After the rolled strip 10 has run into the drive roller gap 28 of the drive apparatus, the hydraulic control cylinders 23, 24, which are provided with their own pressure actual value transmitters 29, 30 and with their own pressure controls, are switched over to pressure control. With the help of these pressure controls, the two hydraulic control cylinders can be acted upon differently 23, 24 the direction of the belt can be influenced very advantageously. Shortly before the end of the strip exits, pressure control must be switched to position control. The signals from the two pressure actual value transmitters 29, 30 indicate the contact pressure for the drive and operating side of the drive rollers 1, 15. As can be seen in particular from Figure 2, the bearing housing 21, 22 of the upper drive roller 15 are both by the horizontal component F h 31 of the contact pressure F and by the tape tension between the reel mandrel (not shown in the drawing) and the drive device against the in the side of the bearing housing guide 33 facing the reel, also not shown, is pressed. As a result, a precisely defined position of the bearing housings 21, 22 and thus the exact position of the upper drive roller 15 is guaranteed in each case. A special hydraulic tensioning cylinder is therefore not required for the upper drive roller 15.

Die Schwinge 18 der oberen Treibrolle 15 ist an ihrem einen Ende 34 in Wälzlagern 35 schwenkbeweglich gelagert, während sie sich mit dem anderen freien Ende 36 in Arbeitsstellung auf die festen Anschläge 27 am Ständer 5 stützt. Die horizontale Einstellung der Schwinge 18 kann auf diese Weise sehr vorteilhaft bei der Erstinstallation der Schwinge 18 durch genaues Ausmessen der Anschläge 27 erfolgen und bleibt konstant.The rocker 18 of the upper drive roller 15 is pivotally mounted at one end 34 in roller bearings 35, while it is supported with the other free end 36 in the working position on the fixed stops 27 on the stand 5. The horizontal adjustment of the rocker 18 can be done very advantageously in this way during the initial installation of the rocker 18 by precise measurement of the stops 27 and remains constant.

Für den sicheren Bandzug während des Bandwickelns ermöglicht der Treibapparat gemäß der Erfindung im Vergleich zu den bisher bekannten Treibapparaten sehr vorteilhaft die Einstellung eines größeren Differenzmaßes zwischen dem Treibrollenspalt und der Banddicke, da die obere Treibrolle 15 beim Einlaufen des Walzbandes 10 in den Treibrollenspalt 28 angehoben wird, ohne daß dabei eine unzulässig hohe Anpreßkraft entsteht, und die Anpreßkraft durch die Druckregelung der hydraulischen Steuerzylinder 23, 24 genau eingestellt und der Lauf des Bandes entsprechend korrigiert werden kann.For the secure strip tension during the strip winding, the drive apparatus according to the invention enables the setting of a larger difference between the drive roller gap and the strip thickness very advantageously compared to the previously known drive apparatuses, since the upper drive roller 15 is raised into the drive roller gap 28 when the rolled strip 10 runs in without causing an impermissibly high contact pressure, and the contact pressure can be precisely adjusted by the pressure control of the hydraulic control cylinders 23, 24 and the running of the belt can be corrected accordingly.

Im übrigen ist das freie Ende 36 der Schwinge 18 sehr vorteilhaft über an sich bekannte hydraulische oder pneumatische Druckmittelzylinder 38 mit dem Ständer 5 gelenkig verbunden, mit deren Hilfe die Schwinge 18 und die damit verbundene obere Treibrolle 15 im Bedarfsfalle angehoben oder gesenkt werden kann.Moreover, the free end 36 of the rocker 18 is very advantageously articulated to the stand 5 via known hydraulic or pneumatic pressure medium cylinders 38, with the aid of which the rocker 18 and the associated upper drive roller 15 can be raised or lowered if necessary.

Der Treibapparat gemäß der Erfindung ermöglicht somit eine optimale Steuerung bezüglich des Bandlaufes, insbesondere auch von sehr dünnen Bändern für Warmbandhaspeln.The driving device according to the invention thus enables optimal control with regard to the strip running, in particular also of very thin strips for hot strip reels.

Ferner ermöglicht der erfindungsgemäß ausgebildete Treibapparat auch ein automatisches Nullen, indem die Treibrollen 1, 15 aufeinander gefahren werden und die Position der oberen Treibrolle 15 beim Berühren der unteren Treibrolle 1 durch Veränderung der Drucksignale an den Druckistwertgebern 29, 30 und 37 registriert werden kann. Ein besonderer Vorteil der erfindungsgemäßen Maßnahmen besteht auch darin, daß sie jederzeit und bei bereits vorhandenen Treibapparaten angewandt werden können, und zwar durch Nach- bzw. Umrüsten.Furthermore, the drive apparatus designed according to the invention also enables automatic zeroing, in that the drive rollers 1, 15 are moved towards one another and the position of the upper drive roller 15 when the lower drive roller 1 is touched can be registered by changing the pressure signals at the pressure actual value transmitters 29, 30 and 37. A particular advantage of the invention Measures also consist in the fact that they can be used at any time and with existing propellants, by retrofitting or retrofitting.

Claims (6)

  1. Driving apparatus for rolled strip (10), in particular for hot strip spools in broad strip rolling trains, and consisting of at least two driving rollers (15, 1) with gap setting (28), which are arranged parallelly one above the other in a standard (5), wherein the upper driving roller (15) is connected by way of its bearing housing (21, 22) and hydraulic control cylinders (23, 24) with a rocker (18), at which pressure medium cylinders (38) for the setting of the roller contact pressure are arranged, and wherein the bearing housings (21, 22) are retained each independently of the other at the rocker (18) to be displaceable parallelly to the plane of movement thereof, characterised thereby,
    a) that the lower driving roller (1) is borne in the standard (5) to be displaceable in pivotal movement relative to the upper driving roller (15) connected with the rocker (18),
    b) that the bearing housings (6, 7) of the lower driving roller (1) stand in connection with hydraulic pressure medium pivoting cylinders (11, 12), which are actuable each independently of the other in about vertical direction, and with position transmitters (13, 14),
    c) that the lower driving roller (1) is connected by way of the bearing housings (6, 7) in the standard (5) with pressure medium cylinders (8) acting in about horizontal direction for the purpose of its adjustment in pivotal movement relative to the upper driving roller (15) and
    d) that the hydraulic control cylinders (23, 24) are provided with actual pressure value transmitters (29, 30).
  2. Driving apparatus according to claim 1, characterised thereby, that hydraulic counterbalancing cylinders (16, 17), which engage by way of own bearing housings (19, 20) at the upper driving roller (15), are arranged at the rocker (18).
  3. Driving apparatus according to claim 2, characterised thereby, that the hydraulic counterbalancing cylinders (16, 17) are provided with pressure transmitters (37).
  4. Driving apparatus according to one or more of the claims 1 to 3, characterised thereby, that position transmitters (25, 26) are arranged at the rocker (18) for ascertaining the position of the bearing housings (21, 22) of the upper driving roller (15) and thereby for the setting of the roller gap (28).
  5. Driving apparatus according to one or more of the claims 1 to 4, characterised thereby, that the rocker (18) of the upper driving roller (15) at one end (34) is retained to be pivotably movable by bearings (35), in particular rolling bearings, arranged in the standard (5) and at the other free end (36) rests on a fixed abutment (27).
  6. Driving apparatus according to one or more of the claims 1 to 5, characterised thereby, that the free end (36) of the rocker (18) is connected with the standard (5) by way of hydraulic or pneumatic pressure medium cylinders (38).
EP86101127A 1985-03-01 1986-01-29 Apparatus for advancing rolled strip Expired - Lifetime EP0192982B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853507251 DE3507251A1 (en) 1985-03-01 1985-03-01 DRIVER FOR ROLLER TAPE
DE3507251 1985-03-01

Publications (3)

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EP0192982A2 EP0192982A2 (en) 1986-09-03
EP0192982A3 EP0192982A3 (en) 1989-03-29
EP0192982B1 true EP0192982B1 (en) 1991-09-25

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Application Number Title Priority Date Filing Date
EP86101127A Expired - Lifetime EP0192982B1 (en) 1985-03-01 1986-01-29 Apparatus for advancing rolled strip

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US (1) US4759485A (en)
EP (1) EP0192982B1 (en)
JP (1) JPS61262424A (en)
DE (2) DE3507251A1 (en)

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CN103702776B (en) * 2011-07-08 2017-02-15 丹尼尔和科菲森梅克尼齐有限公司 Pinch roll device for rolled metallurgic products
CN103639314A (en) * 2013-11-15 2014-03-19 四川银河钢结构工程有限公司 Steel coil feeding mechanism

Also Published As

Publication number Publication date
DE3681605D1 (en) 1991-10-31
JPH0526568B2 (en) 1993-04-16
US4759485A (en) 1988-07-26
EP0192982A3 (en) 1989-03-29
DE3507251A1 (en) 1986-09-04
EP0192982A2 (en) 1986-09-03
JPS61262424A (en) 1986-11-20

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