EP0013672A1 - Vorrichtung zur Einstellung der Führungsrollen eines Walzwerkführungskastens - Google Patents

Vorrichtung zur Einstellung der Führungsrollen eines Walzwerkführungskastens Download PDF

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Publication number
EP0013672A1
EP0013672A1 EP79100207A EP79100207A EP0013672A1 EP 0013672 A1 EP0013672 A1 EP 0013672A1 EP 79100207 A EP79100207 A EP 79100207A EP 79100207 A EP79100207 A EP 79100207A EP 0013672 A1 EP0013672 A1 EP 0013672A1
Authority
EP
European Patent Office
Prior art keywords
stock
pair
guide
ratchet
roller holders
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
EP79100207A
Other languages
English (en)
French (fr)
Other versions
EP0013672B1 (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 EP79100207A priority Critical patent/EP0013672B1/de
Priority to DE7979100207T priority patent/DE2967634D1/de
Publication of EP0013672A1 publication Critical patent/EP0013672A1/de
Application granted granted Critical
Publication of EP0013672B1 publication Critical patent/EP0013672B1/de
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 mechanism for adjusting the stock restraining effect of the guide rollers of a stock guide for a rolling mill which includes a guide box, a pair of roller holders pivotally mounted on the guide box by means of respective vertically extending fulcrum pins, a pair of guide rollers rotatably mounted on the respective roller holders at the forward ends thereof and movable toward and away from each other with pivotal movement of the roller holders, a pair of pivot studs mounted on the respective roller holders adjacent to the rear ends of the latter in aligned opposite relation to each other, and spring means arranged between the two roller holders to serve the purpose of normally urging the pivot studs toward each other.
  • the invention generally is concerned with rolling mills serially arranged on a rolling line to roll a steel stock, such as steel wire rod or steel bar, in a successive fashion. and more particularly stock guides usable at the entrance of such rolling mills to guide the stock into engagement with the mill rolls.
  • the present invention is concerned with roller type entrance guides for properly directing the stock to be rolled into the roll groove of the associated rolling mill and more particularly with means for adjusting and setting the stock restraining effect of the guide rollers.
  • entrance roller guides include a guide box arranged on the rolling line, a pair of roller holders pivotally supported on the guide box by means of a pair of vertically extending fulcrum pins secured to the guide box on the opposite sides of the rolling line, and right and left guide rollers mounted on the forward ends of the respective roller holders in positions close to the associated roll entrace to guide the stock into the latter.
  • the distance between the guide rollers is adjustable by rocking the roller holders laterally in opposite directions and symmetrically with respect to the line of roll pass.
  • roller holder controls used to adjust the distance between the guide rollers, are known and, among others, the device of German Patent No. 1 048 251 is most advanced.
  • a tension spring is arranged between the pair of roller holders to normally bias the rear end portions thereof inwardly toward each other.
  • externally threaded movable members are threadably engaged with the respective sections of the cylindrical nut being formed with righthand and lefthand internal threads, respectively, and are held between the inwardly spring-biased roller holders in-abutting engagement with respective pivot pins provided thereon in aligned relation to each other.
  • the distance between the guide rollers mounted on the respective roller holders is adjustable simply by turning the cylindrical nut about its own axis thereby to move the externally threaded members axially'in opposite directions.
  • the invention as claimed is intended to provide an improved structure of roller guide usable in the rolling of wire rods, bars and other forms of steel material, which is capable of manually adjusting the stock restraining effect of the guide rollers easily and quickly in one operation without involving any danger to the attendant even during the ON-LINE operation of the rolling equipment.
  • the stock is directed under the restraint of a pair of right and left guide rollers which engage the stock on its opposite sides.
  • rolling conditions such as rolling speed and roll load are different for different roll stands in the line and this makes it necessary at each stand to set the stock restraining effect of the guide rollers in accordance with the rolling conditions at the stage.
  • the stock restraining effect must also be properly adjustable in accordance with any subtle change of the stock in the rolling process as well as with the reduction in stock restraining effect of the stock guide due to wear of the guide rollers without delay.
  • an internally screw-threaded tubular member arranged between said pivot studs coaxially therewith and including a first tubular section internally formed with lefthand screw-threads, a second tubular section internally formed with righthand screw threads, and a ratchet wheel formed between said first and second tubular sections integrally therewith, a pair of lefthand and righthand screw-threaded shafts threadably fitted in said first and second internally screw-threaded tubular sections and held in abutting engagement with the abutting points of the respective pivot studs, a pair of ratchet pawls pivotally movable into and out of meshing engagement with said ratchet wheel in an alternate fashion, a manually operable control cam for actuating said ratchet pawls alternately into and out of meshing engagement with said ratchet wheel, and a notching lever handle operable to intermittently rotate said ratchet wheel through the intermediary of either one of said ratchet pawls.
  • the present invention provides a stock guide mechanism for adjusting the stock restraining effect of the guide rollers which satisfies all the requirements described above.
  • the guide roller adjusting mechanism includes a pair of right and left roller holders pivotally supported, intermediate the ends thereof, on a pair of vertically extending fulcrum pins, which are secured to the guide box or the body structure of the stock guide on the opposite sides of the pass line.
  • right and left guide rollers are supported on the forward end portions of the roller holders, which lie opposite to the roll groove.
  • the right and left roller holders have rearward extensions which carry respective pivot studs thereon.
  • An internally screw-threaded tube or cylindrically shaped nut is horizontally supported between the pivot studs in a state held against axial movement by means of a pair of right and left brackets fixed to the guide box.
  • the cylindrical nut is formed on one half length thereof with righthand internal threads and on the other half length with lefthand internal threads to threadably receive a righthand screw-threaded shaft and a lefthand screw-threaded shaft, respectively, so that the outer ends of the externally threaded shafts are held opposite to the respective pivot studs carried on the roller holders at the rear ends thereof.
  • the pivot studs are each held, at their abutment points, in pressure contact with the adjacent extremities of the respective threaded shafts.
  • the two threaded shafts extend through the respective fixed brackets and are supported thereby so as to be firmly held against rotation about their common axis.
  • a stock guide of the type described which includes an adjusting mechanism comprising, among others, a ratchet wheel formed around the internally screw-threaded tube integrally therewith and a pair of ratchet pawls movable into and out of meshing engagement with the ratchet wheel in alternate fashion under the action of a control cam connected with a notching lever handle which is manually operable fore and aft in a plane including the longitudinal axis of the stock guide.
  • a pair of roller holders 2 and 3 are assembled into a guide body or box 1 on the right and left sides thereof symmetrically of the longitudinal axis of the guide box.
  • a pair of main and auxiliary guide rollers 4 and 41 or 5 and 51 are rotatably mounted on each of the roller holders 2 and 3 at the forward end thereof.
  • the roller holders 2 and 3 are themselves pivotally supported, intermediate the ends thereof, on the guide box 1 by means of respective fulcrum pins 6 and 7.
  • An entry guide 20 is fitted to the guide box 1 along the center line thereof to serve the purpose of directing a stock W to be rolled toward the main guide rollers 4 and 5 and auxiliary guide rollers 41 and 51.
  • the stock W is then guided to the center of the roll groove or pass C between a pair of working rolls R and R' (see also fig. 3) principally under the restraining effect of the main guide rollers 4 and 5.
  • This effect is adjustable by causing the roller holders to swing in opposite directions so that the loading points W 1 and W 2 (fig. 2) on the main guide rollers 4 and 5 are moved toward or away from each other.
  • the restraining force of the guide rollers acting on the stock at the loading points W 1 and W 2 is adjustable by controllably displacing the points of pressure contact P 1 and P 2 of pivot studs 8 and 9, carried on the rear portions of the respective roller holders 2 and 3, laterally toward or away from each other thereby to cause the roller holders to swing about the axes of fulcrum pins 6 and 7, on which the roller holders are pivotally mounted.
  • a pair of right and left support brackets 10 are formed integral with the guide box 1 as upward extensions thereform.
  • a lefthand and a righthand screw-threaded shaft 15 and 16 which are threadably received in respective correspondingly screw-threaded tubular sections 45 and 46, are fitted through the respective support brackets 10 for horizontal axial displacement relative thereto.
  • the internally screw-threaded tubular sections 45 and 46 are formed integral with a ratchet wheel 44 coaxially on the respective sides thereof for rotation therewith.
  • the threaded shafts 15 and 16 are each formed with a key groove 22 to slidably receive a key bolt 21, which is threadably mounted on the adjacent support bracket 10, and are thus held against rotation but are axially movable upon rotation of the ratchet wheel 44.
  • the ratchet wheel 44 is formed with ratchet teeth around the periphery thereof and is accomo- dated in a ratchet casing 42, which is rotatable relative to the ratchet wheel 44 about the common axis of the ratchet wheel 44 and the left and right screw-threaded shafts 15 and 16 in a reciprocatory fashion under the action of notching handle 60 provided therefor.
  • a pair of ratchet pawls 17 and 18 are pivotally mounted at one end thereof on the inside of the ratchet casing 42 so as to be alternately placed at the other end in and out of meshing engagement with the ratchet wheel 44.
  • Compression springs 23 and 24 are arranged between the inner wall surface of ratchet casing 42 and the respective ratchet pawls 17 and 18 so that either one of the ratchet pawls as placed in mesh with the ratchet wheel 44 is resiliently held in place under the bias of the associated compression spring.
  • a pawl controlling cam 19 is also provided which is rotatably supported on the adjacent wall of the ratchet casing 42 between the pair of ratchet pawls 17 and 18 in contacting relation therewith.
  • the integral shaft of the controlling cam 19, which extends through the casing wall, is provided at its external end with a lever grip 190 (fig.
  • the points of force input P 1 and P 2 to the respective roller holders 2 and 3, are incrementally moved away from each other and, in this manner, the roller holders 2 and 3 are swung in opposite directions about the respective fulcrum pins 6 and 7 against the resilience of a tension spring 49 arranged between the adjacent ends of the roller holders so that the loading points W 1 and W 2 of main guide rollers 4 and 5, carried on the forward ends of the respective roller holders 2, and 3, are moved toward each other and the restraining effect of the main rollers upon the stock W being rolled is increased effectively under the lever action of the roller levers or holders 2 and 3 fulcrumed at 6 and 7, respectively.
  • roller type stock guide provide with such quick roller setting mechanism of the ratchet type of the present invention, which is extremely simple and easy to operate, should be fabricated with particular precision and completely in bilaterally symmetrical form so as to be installed exactly on the line of roll pass without any possible misalignment and thus to enable the pair of roller holders 2 and 3 to operate accurately in symmetrical fashion with respect to the longitudinal axis of the device or the line of roll pass.
  • the invention comprises a roller type stock guide of the type including, among others, a cylindrical nut member including two tubular sections 45, 46 having threaded connections of opposite hands with a pair of threaded shafts 15, 16 being arranged between two roller holders 2, 3 and operable to be turned for moving the threaded shafts 15, 16 in opposite directions thereby to vary the distance between the guide rollers 4, 5 in which a ratchet type nut driving mechanism is provided which includes a ratchet wheel 44 formed around the cylindrical nut member integrally therewith, a pair of ratchet pawls 17, 18 movable into and out of meshing engagement with the ratchet wheel 44 in alternate fashion under the action of a manually operable control cam 19, and a notching lever handle 60 manually operable to turn the ratchet wheel 44 and cylindrical nut member in an intermittent fashion through the intermediary of either one of the ratchet pawls 17, 18 as placed in mesh with the ratchet wheel 44.
  • a ratchet type nut driving mechanism which includes a

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
EP79100207A 1979-01-24 1979-01-24 Vorrichtung zur Einstellung der Führungsrollen eines Walzwerkführungskastens Expired EP0013672B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP79100207A EP0013672B1 (de) 1979-01-24 1979-01-24 Vorrichtung zur Einstellung der Führungsrollen eines Walzwerkführungskastens
DE7979100207T DE2967634D1 (en) 1979-01-24 1979-01-24 A mechanism for adjusting the stock restraining effect of the guide rollers of a stock guide for a rolling mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP79100207A EP0013672B1 (de) 1979-01-24 1979-01-24 Vorrichtung zur Einstellung der Führungsrollen eines Walzwerkführungskastens

Publications (2)

Publication Number Publication Date
EP0013672A1 true EP0013672A1 (de) 1980-08-06
EP0013672B1 EP0013672B1 (de) 1986-11-05

Family

ID=8186069

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79100207A Expired EP0013672B1 (de) 1979-01-24 1979-01-24 Vorrichtung zur Einstellung der Führungsrollen eines Walzwerkführungskastens

Country Status (2)

Country Link
EP (1) EP0013672B1 (de)
DE (1) DE2967634D1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0103667A2 (de) * 1982-09-16 1984-03-28 Centro-Morgardshammar GmbH Doppelrollenführung für Walzwerke
EP0181707A1 (de) * 1984-11-02 1986-05-21 Kotobuki Sangyo Kabushiki Kaisha Nachwalzwerk mit Rollenanstellungsvorrichtung
EP0202377A1 (de) * 1985-05-20 1986-11-26 Kotobuki Sangyo Kabushiki Kaisha Walzgutführungseinrichtung

Citations (5)

* 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
US2599847A (en) * 1950-02-09 1952-06-10 Nat Tube Co Entry guide for seamless tube plug rolling mills
GB935259A (en) * 1960-02-25 1963-08-28 Schloemann Ag Improvements in roller guides for rolling mills
DE1246650B (de) * 1961-02-10 1967-08-10 Demag Ag Rolleneinfuehrungsvorrichtung fuer Walzgerueste
DE1602224A1 (de) * 1967-12-23 1970-05-21 Gerd Wolff Maschinenfabrik Rollenkasten

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3867855A (en) * 1971-12-10 1975-02-25 Cletus J Siebert Lever actuated ratchet wrench
DE7517096U (de) * 1975-05-30 1975-12-04 Popp H Automatischer umschaltbarer schraubenschluessel (knarre)
DE7521184U (de) * 1975-07-03 1976-10-07 Sonner, Josef, 8021 Strasslach Vorrichtung zum ausziehen bzw. ausrichten beschaedigter fahrzeugkarosserien

Patent Citations (5)

* 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
US2599847A (en) * 1950-02-09 1952-06-10 Nat Tube Co Entry guide for seamless tube plug rolling mills
GB935259A (en) * 1960-02-25 1963-08-28 Schloemann Ag Improvements in roller guides for rolling mills
DE1246650B (de) * 1961-02-10 1967-08-10 Demag Ag Rolleneinfuehrungsvorrichtung fuer Walzgerueste
DE1602224A1 (de) * 1967-12-23 1970-05-21 Gerd Wolff Maschinenfabrik Rollenkasten

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0103667A2 (de) * 1982-09-16 1984-03-28 Centro-Morgardshammar GmbH Doppelrollenführung für Walzwerke
EP0103667A3 (en) * 1982-09-16 1984-05-23 Centro-Morgardshammar Gmbh Double roll guide for rolling mills
EP0181707A1 (de) * 1984-11-02 1986-05-21 Kotobuki Sangyo Kabushiki Kaisha Nachwalzwerk mit Rollenanstellungsvorrichtung
EP0202377A1 (de) * 1985-05-20 1986-11-26 Kotobuki Sangyo Kabushiki Kaisha Walzgutführungseinrichtung

Also Published As

Publication number Publication date
DE2967634D1 (en) 1986-12-11
EP0013672B1 (de) 1986-11-05

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