EP0192386A2 - A roller guide device for a rolling mill - Google Patents

A roller guide device for a rolling mill Download PDF

Info

Publication number
EP0192386A2
EP0192386A2 EP86300842A EP86300842A EP0192386A2 EP 0192386 A2 EP0192386 A2 EP 0192386A2 EP 86300842 A EP86300842 A EP 86300842A EP 86300842 A EP86300842 A EP 86300842A EP 0192386 A2 EP0192386 A2 EP 0192386A2
Authority
EP
European Patent Office
Prior art keywords
rollers
pair
roller
guide device
guide
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.)
Withdrawn
Application number
EP86300842A
Other languages
German (de)
English (en)
French (fr)
Inventor
Kenichi Okaniwa
Hiromi Mikami
Kouetsu Sasaki
Sadao Yoshizawa
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.)
Nippon Steel Corp
Kotobuki Sangyo KK
Original Assignee
Nippon Steel Corp
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 Nippon Steel Corp, Kotobuki Sangyo KK filed Critical Nippon Steel Corp
Publication of EP0192386A2 publication Critical patent/EP0192386A2/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • 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

  • This invention relates to a roller guide device for guiding elongate rolling material to a rolling mill.
  • roller guide device which are usually used to guide elongate rolling material e.g. bar or rod, to a rolling mill.
  • rolling material e.g. bar or rod
  • single roller type which comprises a pair of guide rollers built into a roller holder
  • double roller type in which two pair sets of guide rollers are built into the roller holder, for example as shown in Japanese Patent Laid-Open Publication No.54-25,254.
  • the roller guide usually used has the inconvenience that the pass line 6 (see Figure 9) of rolling material 3 deviates towards the side of the shaft of the roll 2, the material then deviates from the calibre centre of the guide roller, as shown in Figure 11, and is caused to cling or adhere to the flange 1B of the roller calibre, thereby damaging the material.
  • this is often a factor in giving unbalanced abrasion to the rollers, because of the one-sided load exerted on the roller calibre.
  • the material is normally controlled at a rolling speed to such an extent as to form a curved path 3A (see Figure 9) between respective stands.
  • the guide rollers normally used fail to control this curved path, which leads to a clinging to the roller flange or mis-rolling.
  • 4 is a horizontal roll.
  • the horizontal twist roller gives a twist to the material, and the material is guided into the longitudinal type fixed roller through the tip-inductive guide.
  • the example in the former case has the disadvantage that the material can positively be prevented from being vibrated in a horizontal direction by hydraulic means, but can not be prevented from being vibrated in a longitudinal direction.
  • the example in the latter case has also the disadvantage that the tip-inductive guide provided between the rollers located at the rear and front sides undergoes abrasion because the material comes in touch with the tip-inductive guide and this enhances frictional mars on the material, thus resulting in abrasion of the roller.
  • This inconvenience is presumed to be more accelerated when the device is provided after an intermediate looper and repeater mechanism which are provided in a rolling mill. If, considering such inconvenience, the tip-inductive guide is not provided in this example, the material will define a secondary loop between the rollers (located far apart from each other) and can not be fed stably in a right posture into the rolling mill.
  • the invention therefore has been developed primarily with a view to prevent, or at least minimise: the rolling material from being vibrated; mis-rolling, the growth of clinging mar to the material and roller abrasion; and to provide stable feeding in a correct posture into the roll calibre, and to simplify the construction without requiring a tip-inductive guide.
  • a roller guide device for guiding elongate rolling material to a rolling mill and comprising guide rollers mounted rotatably on a housing so as to define a guide path to the rolling mill, characterised in that the guide rollers comprise a first pair of lateral rollers rotatable about a first pair of substantially parallel axes and a second pair of longitudinal rollers rotatable about a second pair of substantially parallel axes which extend perpendicular to the first pair of axes.
  • roller guide device for guiding elongate rolling material to a rolling mill, will now be described in detail, by way of example only, with reference to the accompanying drawings, in which:
  • the roller guide device serves to guide elongate rolling material 3 to a pair of entry rolls 9a,9b of a rolling mill (not shown in detail) and comprises a housing in the form of a guide box 7 on which is mounted a pair of roller holders 8a,8b symmetrically arranged with the guide box 7 located therebetween. Both the roller holders 8a,8b are made of flexible members and are pivotally mounted on fulcrum pins 11a,11b in the guide box.
  • the ends of the roller holders 8a,8b are close to the entrance to the rolls 9a,9b, and are provided with a first pair of lateral guide rollers 10a,10b pivoted on the free ends of the holders 8a,8b via pins, for guiding the material 3 into the entrance to the rollers 9a,9b.
  • the roller holders 8a,8b are provided at the rear ends with a ratchet 12 and a tension spring 18.
  • the ratchet 12 serves to adjust the open angle of the ends of roller holders 8a,8b, and the spring 13 functions to return the ends of roller holders 8a,8b by its tensile force to their original positions.
  • the rollers 10a, 10b are rotatable about parallel vertical axes.
  • lateral rollers 10a,10b On one side of lateral rollers 10a,10b (righthand in Figure 1 and Figure 2) is disposed a second pair of longitudinal guide rollers 14a,14b closely on the upper and lower sides, and the longitudinal rollers are of the same dimensions as the lateral rollers, but rotate about parallel horizontal axes.
  • the longitudinal rollers 14a,14b are respectively fitted on eccentric roller pins 17a,17b pivoted to fixed projecting pieces 15,16 integrally formed with the guide box 7.
  • the longitudinal rollers 14a,14b are fitted pivotally on the pins 17a,17b by taper roller bearings disposed at the axial part (In Figure 4 is shown only a taper roller bearing 18a).
  • 19 is a thrust washer
  • 20 is a thrust ring.
  • the embracing amount i.e. clearance in which rolling material can be accommodated, of longitudinal rollers 14a,14b can be adjusted by an adjusting means.
  • the eccentric roller pin 17a is provided at one end (lefthand in Figure 4) with an eccentric piece 21a.
  • the eccentric piece is fixed by a key 22a. It is provided at another end with a worm gear 25a which is situated outside the projecting piece 16.
  • the gear 25a is in meshing relation with a worm gear 26a, which is fitted on a centering shaft 27a.
  • the adjusting mechanism for the lower longitudinal roller 14b is substantially identical to that of the upper longitudinal roller 14a; a gear 25b on the side of the roller 14b is in meshing relation with a worm gear 26b fitted on a centering shaft 27b.
  • centering shafts 27a, 27b allows the longitudinal rollers 14a,114b to draw near to or to separate from the pass line side 24 in a horizontal direction as shown in Figure 4 depending upon the displacement amount of the eccentric roller pins 17a,17b.
  • Centering shafts 27a, 27b are supported on a pedestal 28.
  • 23 is a pass line in a longitudinal direction.
  • two-part split entry guides 29a,29b are put together at the upper and lower ends by a guide bar 30 and are fixed to the internal centre of guide box 7 by a tap bolt 31.
  • the guide box 7 is supported in a cantilever manner on a cassette base 32 and is fixed by clamps 33a, 33b and clamping bolts 34a,34b.
  • 35 is an acute-angled piece.
  • the cassette base 32 is fixed on a rest bar 37 of a rolling mill by tightening a cotter 36 with a cotter bolt 38.
  • 39 is a locking piece for the rest bar 37, and 40 denotes clamping slope.
  • the ratchet 12 By operation of the ratchet 12 in advance, opening and closing of the pair of roller holders 8a,8b in the form of '/ ⁇ ' (with fulcrum pins 11a,11b placed as fulcrums), adjusts the embracing force of the lateral rollers 10a,10b at the ends of the roller holder for its strength in the longitudinal direction of the material 3.
  • the distance set between the surfaces of lateral rollers 10a,10b is almost identical to the dimension of the material 3.
  • the distance between the longitudinal rollers 14a,14b is set to be wider by a small amount than the dimension of the material 3, by operating the adjusting means (25a,25b, 26a,26b) by means of the centering shafts 27a,27b.
  • the material 3 is embraced horizontally by longitudinal rollers 14a,14b and then embraced in a longitudinal direction by lateral rollers 10a,10b and is guided inductively into the entrance of the rolls 9a,9b.
  • the distance between the lateral rollers 10a and 10b is adjusted, and the holders 8a,8b become flexible because of their resilient properties, and accordingly, the rollers can embrace the material strongly and always adhere closely to the material with its embracing force maintained strongly while pliably corresponding with a little dimensional change that may arise from a tip crack or bend, etc. of the material 3.
  • the longitudinal rollers 14a,14b are supported by the projecting pieces 15,16 made of rigid construction, and they can embrace the material 3 strongly, as shown in Figure 4, and can sufficiently correspond with the material that swings in a horizontal direction.
  • the short distance between the lateral and longitudinal rollers can control any vibration of the material 3, and the material will not describe a secondary loop between the rollers.
  • roller guides described above were arranged after an intermediate looper and repeater for rolling wire materials, and tests were conducted under premise as given below. Simultaneously, for the said roller guides having a tip-inductive guide provided between lateral and longitudinal roller, tests were conducted under the same conditions.
  • the rate of missrolling between the lateral roller and the longitudinal roller tends to increase as the distance 1 between rollers is made wider.
  • the tip portion of the material 3 is not restrained by the tip-inductive guide, and is thus caused to cling to the flange of lateral rollers 10a, 10b, resulting in missrolling.
  • the rate of missrolling comes to be the same level as the rate of missrolling for single roller (dot and chain line in Fig. 6).
  • the rate of missrolling can be reduced by providing the tip-inductive guide, there is a defect that, as shown in Fig. 7, the growth rate of clinging mar is increased because of the material coming in touch with the tip-inductive guide and of the unbalanced abrasion of the guide.
  • the amount of abrasion of the roller is encouraged in proportion to increase of clinging mar. This revealed that there is little advantage for providing the tip-inductive guide between lateral roller and longitudinal roler.
  • the distance 1 between lateral and longitudinal rollers it is desirable to determine the distance 1 between lateral and longitudinal rollers to be les than 3D when considering decrease in the growth rate of clinging mar and the unbalanced amount of abrasion of the roller in terms of restrained missroling rate. Especially, if the distance 1 between the rollers is supposed approx. 1. 1D, the rate of missrolling will be lower as compared with that for single roller as shown in Fig. 6, and even without having the tip-inductive guide, there is no growth of clinging mar of material, and the amount of roller abrasion will never be encouraged by clinging mar.
  • the roller guide can be applied to both an intermediate rolling line and a finish rolling line. Desirably, it is applied to the intermediate rolling line, particularly where wire rods in the line after the looper and repeater are caused to shake violently up and down or to and fro.
  • both the rollers may be of different dimensions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Basic Packing Technique (AREA)
  • Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)
EP86300842A 1985-02-15 1986-02-07 A roller guide device for a rolling mill Withdrawn EP0192386A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP20923/85U 1985-02-15
JP1985020923U JPH0347683Y2 (enrdf_load_stackoverflow) 1985-02-15 1985-02-15

Publications (1)

Publication Number Publication Date
EP0192386A2 true EP0192386A2 (en) 1986-08-27

Family

ID=12040740

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86300842A Withdrawn EP0192386A2 (en) 1985-02-15 1986-02-07 A roller guide device for a rolling mill

Country Status (3)

Country Link
EP (1) EP0192386A2 (enrdf_load_stackoverflow)
JP (1) JPH0347683Y2 (enrdf_load_stackoverflow)
KR (1) KR860006296A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUD20080267A1 (it) * 2008-12-22 2010-06-23 Danieli Off Mecc Dispositivo di regolazione per rulli di guida e relativo procedimento di regolaziione
EP3028783A4 (en) * 2013-11-19 2017-04-12 Nippon Steel & Sumikin Stainless Steel Corporation Rod-shaped steel material guiding method and guiding device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH039844Y2 (enrdf_load_stackoverflow) * 1986-05-06 1991-03-12
JPS6336914A (ja) * 1986-07-30 1988-02-17 Kawasaki Steel Corp Ｈ形鋼用ロ−ラガイド
JP7233058B2 (ja) * 2020-01-24 2023-03-06 Ｊｆｅスチール株式会社 圧延材誘導装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5314144B2 (enrdf_load_stackoverflow) * 1972-05-10 1978-05-15
JPS5533892Y2 (enrdf_load_stackoverflow) * 1974-08-06 1980-08-12
JPS6023890B2 (ja) * 1981-12-29 1985-06-10 寿産業株式会社 抱合可変制御誘導案内装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUD20080267A1 (it) * 2008-12-22 2010-06-23 Danieli Off Mecc Dispositivo di regolazione per rulli di guida e relativo procedimento di regolaziione
WO2010072707A1 (en) * 2008-12-22 2010-07-01 Danieli & C. Officine Meccaniche Spa Adjustment device for guide rollers and relative adjustment method
US9132459B2 (en) 2008-12-22 2015-09-15 Danieli & C. Officine Meccaniche Spa Adjustment device for guide rollers and relative adjustment method
EP3028783A4 (en) * 2013-11-19 2017-04-12 Nippon Steel & Sumikin Stainless Steel Corporation Rod-shaped steel material guiding method and guiding device

Also Published As

Publication number Publication date
KR860006296A (ko) 1986-09-09
JPS61138408U (enrdf_load_stackoverflow) 1986-08-28
JPH0347683Y2 (enrdf_load_stackoverflow) 1991-10-11

Similar Documents

Publication Publication Date Title
US4790164A (en) Roller entry guide
US3452568A (en) Apparatus for continuous forming of strip material
US2095733A (en) Metal rolling
JPH10511311A (ja) 自動ばね巻き装置においてコイルばねを最適化して製造する方法及び装置
US2332796A (en) Reduction of elongated bodies
JP3759201B2 (ja) 条鋼材のガイド方法及びガイド装置
CA2091108A1 (en) Method and apparatus for straightening h-shaped girder sections
EP0192386A2 (en) A roller guide device for a rolling mill
US6209378B1 (en) Adjustable monitoring guide
US5586709A (en) Device to compensate the elongation of at least two wire rods or round bars, which is associated with a drawing assembly
JPH01254311A (ja) ロールスタンドのロールの間で圧延材を案内する装置
CA1068946A (en) Continuous strip reduction cold mill and method
US4179913A (en) Metal strip tensioning apparatus for use in continuous strip reduction cold mill and method
US6351978B1 (en) Roller mount with three-axis freedom
JPH0261841B2 (enrdf_load_stackoverflow)
JP2001150017A (ja) ネジ鉄筋用入口ローラガイド装置及びこの装置における捻転角調整方法
US3315510A (en) Belt wrapper
US4589605A (en) Looping apparatus for coiled material
US4578977A (en) Apparatus for performing roll bending on shape metal
US3143010A (en) Method of and apparatus for reducing the thickness of metal
WO1999019093A1 (fr) Laminoir perceur
JPH09295049A (ja) 矯正機のガイドローラ
JP2000312913A (ja) 入口ローラガイド装置
KR200215183Y1 (ko) 평탄불량 강판의 열처리로 장입용 가이드장치
SU1622052A1 (ru) Стан дл производства электросварных труб

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB IT SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19870106

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MIKAMI, HIROMI

Inventor name: OKANIWA, KENICHI

Inventor name: YOSHIZAWA, SADAO

Inventor name: SASAKI, KOUETSU