EP0013671B1 - Zentrier- und Regelvorrichtung zur Regelung des Abstandes zwischen den Führungsrollen einer Materialführung bei Walzwerken - Google Patents

Zentrier- und Regelvorrichtung zur Regelung des Abstandes zwischen den Führungsrollen einer Materialführung bei Walzwerken Download PDF

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Publication number
EP0013671B1
EP0013671B1 EP19790100206 EP79100206A EP0013671B1 EP 0013671 B1 EP0013671 B1 EP 0013671B1 EP 19790100206 EP19790100206 EP 19790100206 EP 79100206 A EP79100206 A EP 79100206A EP 0013671 B1 EP0013671 B1 EP 0013671B1
Authority
EP
European Patent Office
Prior art keywords
guide rollers
hand screw
sub
worm gear
shafts
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
Application number
EP19790100206
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English (en)
French (fr)
Other versions
EP0013671A1 (de
Inventor
Hiroaki Shimada
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.)
Kotobuki Sangyo KK
Original Assignee
Kotobuki Sangyo KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kotobuki Sangyo KK filed Critical Kotobuki Sangyo KK
Priority to EP19790100206 priority Critical patent/EP0013671B1/de
Priority to DE7979100206T priority patent/DE2965336D1/de
Publication of EP0013671A1 publication Critical patent/EP0013671A1/de
Application granted granted Critical
Publication of EP0013671B1 publication Critical patent/EP0013671B1/de
Priority to SG8585A priority patent/SG8585G/en
Priority to HK61885A priority patent/HK61885A/xx
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • 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
    • B21B39/16—Guiding, positioning or aligning work immediately before entering or after leaving the pass
    • B21B39/165—Guides or guide rollers for rods, bars, rounds, tubes ; Aligning guides

Definitions

  • the invention relates to a centering and cramping adjusting mechanism for adjusting the clearance between a pair of sub-guide rollers by swinging each of said rollers at each side of the axis of feed of the material to be rolled, for use in a material guiding apparatus of a rolling mill, comprising: first and second roller holders adapted to be swung around respective pivot points, said roller holders carrying at their front portions main-guide rollers and having support shafts rotatably attached thereto; and sub-guide rollers eccentrically journalled on respective roller holders.
  • a guiding roller apparatus at the inlet side of the roll.
  • One of the typical guiding roller devices has a pair of main guide rollers and a pair of sub-guide rollers. In such a guiding roller device, it is necessary to adjust the cramping condition of the sub-guide rollers in accordance with the cramping condition of the main guide rollers, when the cramping condition of the main guide rollers is changed and adjusted.
  • the guiding roller apparatus for guiding a blank steel W to be rolled to the rolls R, R' of a roll stand has a pair of roller holders 2, 3 which are pivoted by pins 6, 7 so as to be swung around these pins such that they converge at points upstream or downstream from the pins as viewed in the direction of the material flow.
  • These pair of roller holders 2, 3 having pairs of guide rollers such as a pair of main guide rollers 4, 5 and a pair of sub-guide rollers 41, 51.
  • the guide rollers of each pair cooperate with each other to cramp the material W therebetween.
  • the cramping force, the roller clearance and other conditions have to be adjusted to provide effective and reasonable cramping and guiding, so as to satisfy various requirements such as prevention of falling down of the blank material, linear guiding of the blank material etc.
  • the relation between the main guide rollers 4, 5 and the sub-guide rollers 41, 51 in the conventional apparatus is such that, when the distance between the peripheral - surfaces of the main guide rollers 4, 5 contacting the material W is /, the roller holders 2, 3 swingable around the pins 6, 7 to converge at points upstream or downstream from the pins is swung as illustrated to converge at the opposite side of the rollers to the pins 6, 7, forming therebetween an angle 0.
  • the distance /' between the peripheral surfaces of the sub-guide rollers is so large that the sub-guide rollers cannot make a contact with the material W. Consequently, the contact of the guide rollers is made uneven, and the satisfactory cramping by the plurality of pairs of the guide rollers cannot be performed.
  • a centering and cramping adjusting mechanism for use in material guiding apparatus of a rolling mill is known from British patent no. 935,259.
  • the clearance between a pair of sub-guide rollers is adjusted by swinging each of the rollers at each side of the axis of feed of the material to be rolled.
  • First and second roller holders are provided and are movably mounted.
  • the holders carry at their front portions main guide rollers and a pair of sub-guide rollers adjustable relative to one another on spindles mounted in eccentric bushes in the roller-holders.
  • adjustment of each of the rollers of the adjustable pair must be carried out independently.
  • a mechanism for adjusting the distance apart of the guide rollers, the mechanism including respective angularly adjustable members on which the rollers are mounted eccentrically.
  • the angular adjustment of the members is effected by worm and wheel mechanism.
  • the angularly adjustable members are rotated in mutually opposite directions by means of two worm and wheel mechanisms of opposite hand.
  • the worms of the mechanisms are keyed on a common shaft for this purpose.
  • An object of the present invention is to provide a centering and cramping adjusting mechanism for adjusting the clearance between a pair of sub-guide rollers by swinging each of said rollers at each side of the axis of feed of the material to be rolled, which mechanism allowed independent adjustment of the individual rollers, but also permits a common adjustment in a single operation.
  • the adjusting mechanism described in the introductory paragraph of the specification is characterized by a left hand screw gear fixed to one end of said support shaft on said first roller holder, and a right hand screw gear fixed to one end of said support shaft on said second roller holder, a left hand screw worm gear and a right hand screw worm gear mounted on respective shafts which are mounted coaxially for rotation in engagement with respective ones of said left hand screw gear and said right hand screw gear, and disengageable means for coupling the worm gear shaft together for common rotation.
  • said worm gear shafts are mounted coaxially, and preferably said disengageable means comprises a dog clutch mounted for axial sliding movement on one of said worm gear shafts, and a dog pin provided for engagement with said dog clutch on the other of said worm gear shafts.
  • said disengageable means is engageable and disengageable manually, and preferably said worm gear shafts are rotatable manually.
  • a centering and cramping adjusting mechanism according to the invention may be utilized in a rolling mill for rolling material such as steel into, for example, steel wires, steel bars, steel strips etc.
  • the invention provides a mechanism in which the sub-guide rollers are eccentrically journalled on respective roller holders and are adjustable, when said disengageable means is engaged, by a "one-touch” operation so as to change the roller clearance of the sub-guide rollers and so that the sub-guide rollers may be centered with respect to the main guide rollers, thereby to ensure safe cramping of the steel material.
  • the sub-guide rollers 41, 51 may be swung to and from the guiding axis of the blank steel material W simultaneously, so that the roller clearance of the sub-guide rollers may be changed from /' to / by a single action.
  • a pair of roller holders 2, 3 are installed in a symmetric manner from the outside of a guide box 1. These roller holders 2, 3 rotatably carry at their front portions respective one of a pair of main guide rollers 4, 5 and respective one of sub-guide rollers 41, 51.
  • the roller holders 2, 3 are swingably supported by the guide box 1 through pivot pins 6, 7.
  • An entry guide 20 provided at the center of the guide box 1 is adapted to make a preliminary guide of the steel material W to be rolled down to the positions of the main guide rollers 4, 5 and sub-guide rollers 41, 51.
  • the material W is cramped by the main guide rollers 4, 5 and guided to the center of the mold groove C on the peripheral surface of the rolls R, R' (see Fig. 1, 3).
  • the cramping force is adjusted by moving the loading points W1, W2 (see Fig. 2) toward and away from each other.
  • the sub-guide rollers 41, 51 have therein roller bearings 55, and are carried rotatably by eccentric shaft pins 26 which are unitary with vertical support shafts 25 adjustably and rotatably mounted on respective roller holders 2, 3.
  • each of the support shafts 25 has at its upper portion a flange portion 250 and a portion 251 of reduced diameter.
  • the boss of a left hand screw gear 27 (or right hand screw gear 28) is secured to the portion 251 of reduced diameter by means of a key 31, and is fixed by a fixing screw 33, for a unitary rotation with the vertical support shaft 25.
  • the screw gear 27 (28) has an extended boss 270 which rotatably fits a gear frame 11 (12) which is in contact with the upper surface of the flange portion 250.
  • the left and right hand screw gear 27, 28 are prevented from moving axially by key bolts 32 which are driven through the gear frames 11 (12) to project into a circumferential key groove 35 of the extended boss 270.
  • the first gear frame 11 is attached to the first roller holder 2, while the second gear frame 12 is attached to the second roller holder 3. As shown in Fig. 4, both gear frames 11, 12 are disposed along the same line.
  • a spindle 13 and a shaft 14 are adapted to be engaged by and disengaged from each other by means of a dog clutch 15.
  • the spindle 13 and the shaft 14 carry, respectively, a left hand screw worm gear (pinion) 29 and a right hand screw worm gear (pinion) 30, respectively.
  • These worm gears are fixed by means of spring-equipped pins 36, 36.
  • the left hand screw worm gear 29 and the right hand screw worm gear 30 engage the left hand screw gear 27 and the right hand screw gear 28, respectively.
  • the inner end of the spindle 13 is formed into a tube 130 adapted for slidably receiving the inner end of the shaft 14.
  • the outer peripheral surface has a key groove extending along the length of the spindle 13 adapted to slidably receive the end of a key bolt 16 which is screwed into the dog clutch 15, thereby to prevent the relative rotation.
  • the engagement of the key bolt 16 and the key groove 18 on the other hand allows the longitudinal sliding of the dog clutch 15.
  • a dog pin 19 formed on the shaft 14 comes into engagement with one of a plurality of retaining recesses 150 formed in the end of the dog clutch 15, so that the spindle 13 and the shaft 14 are made rotatable together with each other.
  • a reference numeral 40 denotes a grease nipple for the lubrication of the sliding parts.
  • the eccentric shaft pins 26 _of the vertical support shafts 25 of respective roller holders 2, 3 have required eccentricities. These eccentricities are utilized in adjusting the roller clearance /' of the sub-guide rollers 41, 51.
  • the eccentric positions of the eccentric shaft pins 26 are indicated on scales provided on the upper surfaces of the left hand screw gear 27 and the right screw gear 28, as at "R” on the gear 28 (see Fig. 4).
  • the dog pin 19 and the dog clutch 15 are brought into engagement with each other, so that they may rotate unitarily with each other.
  • a wrench or a handle is attached to the polygonal head of the shaft 14 or the spindle 13.
  • the combination of the left hand screw worm gear 29 and the associated left hand screw gear 27 and the combination of the right hand screw worm gear 30 and the associated right hand screw gear 28 are rotated in the opposite directions.
  • the spindle 13 (shaft 14) is rotated clockwise as viewed in Figs. 1 and 4
  • the left hand screw gear 27 is rotated counter-clockwise
  • the right hand screw gear 28 rotates clockwise.
  • the gears 27 and 28 each have the same number of gear teeth.
  • reference numerals 8, 9 denote a pair of pivot shafts screwed into the first and the second roller holders 2, 3 in opposite directions.
  • the ends of the pivot shafts are supported horizontally by the extension 10, 10 of the guide box, and contact both short axis ends axially movable in supporting sleeves 45, 46, so as to constitute the points P 1, P2 of force by which the roller holders 2, 3 are born by the pivot points 6, 7.
  • a reference numeral 60 denotes a handle which is rockable back and forth (to the right and left in Fig. 1). By reciprocatorily rotating a sleeve 42 unitary with the handle, the points P1, P2 of force are adjusted inwardly and outwardly by a suitable mechanism not shown.
  • a coiled tension spring 49 stretched between the rear ends of the roller holders 2, 3 is retained by the roller holders by means of bolts 47, 48 screwed into both ends thereof, and is adapted to bias the roller holders 2, 3 such that the opposing surfaces of the rear ends of these roller holders 2, 3 are always pressed against respective points P 1, P2 of force.

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

Claims (4)

1. Zentrierungs- und Erfassungseinstell-Mechanismus zur Einstellung des Abstands zwischen zwei Hilfs-Führungsrollen durch seitliches Schwenken der jeweiligen Rolle in bezug auf die Zuführachse des zu walzenden Materials zur Verwendung in einer Materialzuführungsvorrichtung eines Walzwerkes, mit ersten und zweiten Rollenträgern (2, 3), die um entsprechende Schwenkpunkte (6, 7) schwenkbar sind, an ihren vorderen Teilen Haupt-Führungsrollen (4, 5) tragen und Tragachsen (25) aufweisen, die drehbar mit ihnen verbunden sind, während die Hilfs-Führungsrollen (41, 51) auf den jeweiligen Rollenträgern exzentrisch drehbar angeordnet sind, gekennzeichnet durch eine linksgängige Schraubanordung (47), die mit dem einen Ende der Tragachse (25) des ersten Rollenträgers (2) verbunden ist und eine rechtsgängige Schraubanordnung (28), die mit dem einen Ende der Tragachse (25) des zweiten Rollenträgers (3) verbunden ist, eine linksgängige Getriebeschnecke (29) und eine rechtsgängige Getriebeschnecke (30), die jeweils auf entsprechenden Achsen (13, 14) montiert sind, die zur Drehung im Eingriff mit der jeweils entsprechenden linksgängigen Schraubanordnung (27) bzw. rechtsgängigen Schraubanordnung (28) koaxial ausgerichtet sind, sowie durch voneinander lösbare Mittel zum Kuppeln der Achsen (13, 14) der Getriebeschnecken für ein gemeinsames Drehen.
2. Mechanismus nach Anspruch 1, dadurch gekennzeichnet, daß die lösbaren Mittel eine Klauenkupplung (15), die auf einer der Achsen (13) der Getriebeschnecken axial verschlieblich angeordnet ist, und einen Klauenzapfen (19), der auf der anderen Achse (14) der Getriebeschnecken zum Eingriff mit der Klauenkupplung (15) angeordnet ist, umfassen.
3. Mechanismus nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die lösbaren Mittel von Hand in Eingriff und außer Eingriff bringbar sind.
4. Mechanismus nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Getriebeschnecken-Achsen (13, 14) von Hand drehbar sind.
EP19790100206 1979-01-24 1979-01-24 Zentrier- und Regelvorrichtung zur Regelung des Abstandes zwischen den Führungsrollen einer Materialführung bei Walzwerken Expired EP0013671B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP19790100206 EP0013671B1 (de) 1979-01-24 1979-01-24 Zentrier- und Regelvorrichtung zur Regelung des Abstandes zwischen den Führungsrollen einer Materialführung bei Walzwerken
DE7979100206T DE2965336D1 (en) 1979-01-24 1979-01-24 A centering and cramping adjusting mechanism for adjusting the clearance between sub-guide rollers, for use in a material guiding apparatus of a rolling mill
SG8585A SG8585G (en) 1979-01-24 1985-02-01 A centering and cramping adjusting mechanism for adjusting the clearance between sub-guide rollers,for use in a material guiding apparatus of a rolling mill
HK61885A HK61885A (en) 1979-01-24 1985-08-15 A centering and cramping adjusting mechanism for adjusting the clearance between sub-guide rollers,for use in a material guiding apparatus of a rolling mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19790100206 EP0013671B1 (de) 1979-01-24 1979-01-24 Zentrier- und Regelvorrichtung zur Regelung des Abstandes zwischen den Führungsrollen einer Materialführung bei Walzwerken

Publications (2)

Publication Number Publication Date
EP0013671A1 EP0013671A1 (de) 1980-08-06
EP0013671B1 true EP0013671B1 (de) 1983-05-11

Family

ID=8186068

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19790100206 Expired EP0013671B1 (de) 1979-01-24 1979-01-24 Zentrier- und Regelvorrichtung zur Regelung des Abstandes zwischen den Führungsrollen einer Materialführung bei Walzwerken

Country Status (4)

Country Link
EP (1) EP0013671B1 (de)
DE (1) DE2965336D1 (de)
HK (1) HK61885A (de)
SG (1) SG8585G (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1237299A (en) * 1983-09-19 1988-05-31 Mario Fabris Roller entry guide
US4700875A (en) * 1984-09-13 1987-10-20 Mario Fabris Roller entry guide
JPS6182709U (de) * 1984-11-02 1986-05-31
IT1187557B (it) * 1985-04-22 1987-12-23 Danieli Off Mecc Cassetta divisione laminato
JPS61266114A (ja) * 1985-05-20 1986-11-25 Kotobuki Sangyo Kk 圧延材の誘導案内装置
EP0767013A1 (de) * 1995-10-02 1997-04-09 Shinhokoku Steel Corporation System zum Führen von Walzgut
CN109731927A (zh) * 2019-01-23 2019-05-10 合肥市百胜科技发展股份有限公司 一种导卫装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE664743C (de) * 1936-11-17 1938-09-08 Hans Cramer Dr Ing Fuehrungsvorrichtung fuer Walzstaebe und Walzbaender
DE1137705B (de) * 1960-02-25 1962-10-11 Schloemann Ag Rollenfuehrungskasten mit mehreren Rollenpaaren
GB992156A (en) * 1962-08-15 1965-05-19 Hille Engineering Company Ltd Improvements in or relating to means for guiding a rod or bar during a rolling operation
DE1602224C3 (de) * 1967-12-23 1974-06-06 Gerd Wolff, Maschinenfabrik, 5800 Hagen Rollenkasten
US3620063A (en) * 1969-05-19 1971-11-16 Gen Cable Corp Micro-adjusting guide
US3690139A (en) * 1969-11-13 1972-09-12 Francis P Brennan Edge conditioning mechanism
US4171633A (en) * 1977-04-19 1979-10-23 Stiftelsen For Metallurgisk Forskning Roller device for rolling mills

Also Published As

Publication number Publication date
HK61885A (en) 1985-08-23
EP0013671A1 (de) 1980-08-06
DE2965336D1 (en) 1983-06-16
SG8585G (en) 1985-11-15

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