EP2130622B1 - Dispositif de guidage de tiges de mandrin rotatives et de blocs creux dans la zone de laminoirs à cylindres obliques - Google Patents

Dispositif de guidage de tiges de mandrin rotatives et de blocs creux dans la zone de laminoirs à cylindres obliques Download PDF

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Publication number
EP2130622B1
EP2130622B1 EP20090006307 EP09006307A EP2130622B1 EP 2130622 B1 EP2130622 B1 EP 2130622B1 EP 20090006307 EP20090006307 EP 20090006307 EP 09006307 A EP09006307 A EP 09006307A EP 2130622 B1 EP2130622 B1 EP 2130622B1
Authority
EP
European Patent Office
Prior art keywords
rolling
guide
guide rollers
rollers
hollow block
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.)
Not-in-force
Application number
EP20090006307
Other languages
German (de)
English (en)
Other versions
EP2130622A1 (fr
Inventor
Thomas Leisten
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 Group GmbH
Original Assignee
SMS Meer GmbH
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Filing date
Publication date
Application filed by SMS Meer GmbH filed Critical SMS Meer GmbH
Publication of EP2130622A1 publication Critical patent/EP2130622A1/fr
Application granted granted Critical
Publication of EP2130622B1 publication Critical patent/EP2130622B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B25/00—Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group B21B17/00; Accessories or auxiliary means therefor ; Construction of, or alloys for, mandrels or plugs
    • B21B25/02—Guides, supports, or abutments for mandrels, e.g. carriages or steadiers; Adjusting devices for mandrels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
    • B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
    • B21B19/04—Rolling basic material of solid, i.e. non-hollow, structure; Piercing, e.g. rotary piercing mills
    • 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
    • B21B39/14—Guiding, positioning or aligning work

Definitions

  • the invention relates to a device for guiding rotating mandrel bars and hollow blocks in the field of cross rolling mills, in particular Lochschrägwalzgerüsten in seamless tube systems, with a plurality of successively arranged in the rolling guide units, each of which has at least three, the rolling axis surrounding, engageable guide rollers whose axes of rotation parallel to Roll axis extend and wherein the individual guide units are assigned in each case in the rolling direction, rotating, separately driven transport rollers, as by the DE 10 22 540 B known.
  • the guide rollers In order to reliably fulfill this management task, the guide rollers must be adjusted in the radial direction according to the diameter of the mandrel bar and the hollow block. This is done by changing the angle of attack of the guide rollers mounted on swivel arms. This achieves the least possible clearance between the lateral surfaces of mandrel bars or Hollow blocks and the guide rollers.
  • the swivel arms require additional space and freedom of movement.
  • the hollow block is transported axially in the outlet direction and then transported away transversely to the outlet direction.
  • the linear transport is carried out by driven in the direction of rolling transport or drive rollers, which are provided in the aforementioned generic type document between the guide units on pivot levers, while so-called ejector or pivot lever lift the hollow block from the outlet and transfer for removal to a transverse conveyor.
  • These transport and removal devices are arranged at a distance from the guide units.
  • One from the EP 0868947 A 2 known guide device of another kind has instead of a plurality of successively arranged guide units two trained over the maximum to be rolled Luppenin as a continuous tubes guide rollers, which are each received on the shaft side in radial bearings rotatably.
  • the dimension-dependent adjustment of the tubular guide rollers is carried out centrally to the roller center individually via inclined guide carriage or together about an outside pivot point.
  • This guide device also requires several short guide rollers, which are pivoted from above against the long guide rollers to prevent lateral breakout of the leaking doll. After rolling, the upper short guide rollers swung out and arranged between the long guide rollers, driven pulleys are pivoted to the longitudinal transport of the doll
  • the invention is therefore an object of the invention to provide a guide device of the type mentioned, which allows a rolling with significantly lower Walzguttoleranzen and consequently less waste in the finished tube.
  • This object is achieved in that the transport rollers within the guide units each arranged between two lower, with respect to the roll axis vertically adjustable guide rollers and with these a triangular three-roll guide forming and also with respect to the roll axis are vertically adjustable.
  • the integration of the otherwise remote from guide units arranged transport rollers in a guide unit makes it possible that the distance between two guide units significantly shortened and thus the leadership quality of mandrel and hollow block can be significantly improved.
  • Both the integrated transport rollers and the two lower guide rollers are vertically adjustable with respect to the rolling axis.
  • the upper guide roller can be pivoted as in known devices by a pivot axis adjustable about a fixed pivot axis to the rolling axis and away from it, while in any case, the two lower guide rollers vertically, ie moved away in a linear movement to the rolling axis or from this become.
  • the inventive linear adjustment of the lower guide rollers, the transport roller can be arranged in the space between the lower guide rollers.
  • the transport rollers are raised or adjusted by a suitable lifting device to the rolling axis.
  • a suitable lifting device to the rolling axis.
  • the vertical adjusting movement allows the angle of attack of the lower guide rollers to each other is no longer changed, so no pivotal movement of the lower guide rollers toward each other or away from each other takes place.
  • the constructively once defined clearance between the two lower guide rollers can therefore be used without restriction for receiving the vertically adjustable transport roller.
  • the vertical stroke of the guide rollers only the angle of attack to the object to be guided, in the range of a smallest (when guiding the mandrel bar) to a largest (when guiding the Rolling stock or hollow block) angle or angle.
  • Fig. 1 1 denotes a transverse conveyor, via which blocks heated to rolling temperature are fed to a depositing channel 2 of a perforated cross rolling stand 3.
  • a mandrel 4 On the outlet side of the cross rolling stand 3 is a mandrel 4, which is held in the axial direction by an abutment, not shown, and on which in the cross rolling stand 3, a hollow block 5 is rolled.
  • the mandrel 4 and later the rolled hollow block 5 must be guided radially supported, since they rotate at considerable speed.
  • For guiding the mandrel bar 4 and in the sequence of the hollow block 5 serve several in the rolling direction successively arranged guide units. 6
  • FIGS. 2 and 3 show the example of a single guide unit 6, that this is designed as a triangular three-roller guide and each has three guide rollers 7a, 7b, 7c, which in Fig. 2 the mandrel 4 and in Fig. 3 center the hollow block 5.
  • the guide roller 7a can be employed vertically or moved by means of pivoting levers and cylinders, not shown here, by a pivoting action towards the mandrel bar 4 and the hollow block 5, respectively.
  • the guide rollers 7b and 7c are moved by means of lifting devices also not shown here by a vertical or linear adjustment 8 to the mandrel 4 and the hollow block 5 out respectively away.
  • the guide rollers 7a, 7b, 7c are rotatably mounted on axes by means of rolling bearings, not shown, but not driven.
  • a vertically adjustable in the direction of the double arrow 13 transport roller 9 is arranged, which is mounted in a lifting device, not shown here and is driven separately.
  • Fig. 2 is a mandrel 4 inserted or retracted into the rolling line and the guide rollers 7a, 7b, 7c - whose closing or opening movements are coupled together via a corresponding control device - are with their lateral surfaces 10 on the mandrel 4, so that these Beginning of the rolling process is performed in the radial direction.
  • the guide rollers 7 a and 7 b and 7 c take a minimum distance from each other with a correspondingly smallest angle ⁇ 1 of the two vertically adjustable lower guide rollers 7 b, 7 c to the mandrel 4. Both at the beginning and during the rolling process is the transport roller 9 in its lower basic position, without having contact with the mandrel 4.
  • the hollow block 5 slides over the mandrel rod 4. If the leading end of the hollow block 5 reaches the guide units 6 in the rolling direction, the guide rollers 7a, 7b, 7c make a uniform opening or adjusting movement, the upper guide roller 7a possibly through a pivoting movement and the two lower guide rollers 7b and 7c by a vertical lifting movement of the mandrel bar 4 away.
  • a circular passage is formed between the guide rollers 7a, 7b, 7c, which is initially slightly larger than the Jardindruchmesser the resulting hollow block 5.
  • the guide rollers 7a, 7b, 7c make a smooth closing movement to the hollow block 5 out.
  • the lateral surfaces 10 of the guide rollers 7a, 7b, 7c come circumferentially distributed to rest against the surface of the hollow block 5, whereby this is safely centered during the rolling process.
  • To this hollow block guide take the guide rollers 7 a and 7 b and 7 c a farthest Distance from each other with a correspondingly largest angle ⁇ 2 of the two vertically adjustable lower guide rollers 7 b, 7 c to the hollow block. 5
  • the transport roller 9 is moved vertically into its transport position, so that the hollow block 5 rests on its the radius of the hollow block 5 adapted lateral surface 11 (see. Fig. 3 ). Subsequently, the hollow block 5 is transported by means of integrated in the guide units 6 transport rollers 9 axially from the rolling line out in the downstream outlet area, where it is then stored by, for example, a pivot lever having device for conveying to a transverse conveyor 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)

Claims (1)

  1. Dispositif de guidage de poinçons rotatifs (4) et de blocs creux (5) au niveau de laminoirs à cylindres obliques, en particulier de laminoirs à cylindres obliques perforés, dans des installations tubulaires sans soudure, comportant plusieurs unités de guidage (6) disposées successivement dans le sens de laminage, dont chacune possède au moins trois rouleaux de guidage (7a, 7b, 7c) entourant l'axe de laminage et pouvant être approchés, dont les axes de rotation s'étendent parallèlement à l'axe de laminage, des rouleaux transporteurs (9) entraînés séparément tournant dans le sens de laminage étant respectivement associés aux unités de guidage distinctes,
    caractérisé en ce que
    les rouleaux transporteurs (9) sont disposés à l'intérieur des unités de guidage (6) respectivement entre deux rouleaux de guidage inférieurs (7b, 7c) pouvant être approchés verticalement par rapport à l'axe de laminage en formant avec ceux-ci un guide à trois rouleaux de forme triangulaire et peuvent également être approchés verticalement par rapport à l'axe de laminage.
EP20090006307 2008-06-07 2009-05-09 Dispositif de guidage de tiges de mandrin rotatives et de blocs creux dans la zone de laminoirs à cylindres obliques Not-in-force EP2130622B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200810028348 DE102008028348B4 (de) 2008-06-07 2008-06-07 Vorrichtung zum Führen von rotierenden Dornstangen und Hohlblöcken im Bereich von Schrägwalzwerken

Publications (2)

Publication Number Publication Date
EP2130622A1 EP2130622A1 (fr) 2009-12-09
EP2130622B1 true EP2130622B1 (fr) 2012-05-30

Family

ID=41057326

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20090006307 Not-in-force EP2130622B1 (fr) 2008-06-07 2009-05-09 Dispositif de guidage de tiges de mandrin rotatives et de blocs creux dans la zone de laminoirs à cylindres obliques

Country Status (2)

Country Link
EP (1) EP2130622B1 (fr)
DE (1) DE102008028348B4 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102284484A (zh) * 2011-08-31 2011-12-21 太原重工股份有限公司 斜轧机的芯棒预旋转机构
CN104148414B (zh) * 2014-08-21 2016-01-06 湖北理工学院 一种用于三辊轧管机出口的三辊导向装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1022540B (de) * 1953-03-23 1958-01-16 Mannesmann Meer Ag Einrichtung zum OEffnen mehrerer Dornstangenfuehrungen in mit Dornen arbeitenden Rohrwalzwerken
IT1086314B (it) * 1977-09-19 1985-05-28 Innocenti Santeustacchio Spa Gabbia di sostegno e guida del mandrino in laminatoi continui a mandrino trattenuto
DE3715803A1 (de) * 1987-05-12 1988-11-24 Kocks Technik Vorrichtung zum radialen fuehren von rotierenden dornstangen und rohrluppen
DE3833375C1 (fr) * 1988-09-28 1989-05-18 Mannesmann Ag, 4000 Duesseldorf, De
DE19714300A1 (de) * 1997-03-24 1998-10-01 Mannesmann Ag Vorrichtung zum Führen einer Luppe

Also Published As

Publication number Publication date
EP2130622A1 (fr) 2009-12-09
DE102008028348A1 (de) 2009-12-10
DE102008028348B4 (de) 2010-05-27

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