EP0202377A1 - Rolling mill guiding unit - Google Patents

Rolling mill guiding unit Download PDF

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Publication number
EP0202377A1
EP0202377A1 EP85306238A EP85306238A EP0202377A1 EP 0202377 A1 EP0202377 A1 EP 0202377A1 EP 85306238 A EP85306238 A EP 85306238A EP 85306238 A EP85306238 A EP 85306238A EP 0202377 A1 EP0202377 A1 EP 0202377A1
Authority
EP
European Patent Office
Prior art keywords
holders
roller gap
roller
pair
guide rollers
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Withdrawn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
EP85306238A
Other languages
German (de)
English (en)
French (fr)
Inventor
Sadao c/o Kotobuki Sangyo K.K. 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.)
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
Publication of EP0202377A1 publication Critical patent/EP0202377A1/en
Withdrawn legal-status Critical Current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
    • 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 rolling mill guiding unit comprising a support stand, a pair of roller holders, a pair of guide rollers rotatably mounted one on each holder at one end thereof and defining therebetween a roller gap through which rolling material is passed, a respective pivot mounting each holder on the support stand, a spring arrangement engaging with the holders so as to bias them to turn about the pivots in a direction such as to increase the roller gap between the guide rollers, and a driving device engaging with the holders and operable to cause the holders to turn about their pivots in a direction such as to reduce the roller gap and thereby force the guide rollers into engagement with the rolling materal.
  • the guiding unit of the invention is operable with rolling material, such as, for example, wires and rods.
  • rolling material such as, for example, wires and rods.
  • accurate (inductive) guidance of the material plays an important part.
  • the gap between the rollers may become slightly smaller than the dimension of the rolling material, causing the latter to force its way through the roller gap thereby involving the risk of shock loadings being applied to the guide rollers.
  • the guide rollers should be held wide apart each time the rolling material is introduced and, at the moment when it enters the roller gap, the rollers are caused to reduce the gap in order to achieve positive (inductive) guidance of the rolling material.
  • a box B carries a pair of roller holders 33 which each carry a respective guide roller 31 at one end, the holder 33 being pivotally mounted in the box B via a shaft A.
  • the opposite ends of the roller holders 33 are interconnected by a spiral tension spring S, and this exerts a spring force tending to draw the rear ends of the holders 33 towards each other, thereby increasing the roller gap defined between the guide rollers 31.
  • a hydraulic cylinder 32 which is arranged to act between the roller holders 33, on the side of the shaft A remote from the guide rollers 31, and operation of the cylinder 32 causes the guide rollers 31 to be moved into engagement with the rolling material M as it passes through the guiding unit.
  • adjusting bolts 34 are provided which are located between the hydraulic cylinder 32 and the roller holders 33, to permit any necessary adjustments in the roller gap in accordance with the dimensions of the rolling material.
  • FIG. 7 of the accompanying drawings also shows a conventional arrangement of inductive guiding units of a rolling mill.
  • a hydraulic cylinder 42 acts between a pair of roller holders 43, and a ram 42a of the cylinder is coupled with a sliding cam 45 having a stepped external profile which makes contact, on each side thereof, with a respective follower spindle 46.
  • Adjusting screws 44 are fitted on each of the roller holders 43, to permit axial adjustment of the spindles 46.
  • each roller holder 43 upon reciprocating movement of the sliding cam 45 under the action of cylinder 42, each roller holder 43 is caused to carry out a swinging movement about its shaft A, thereby causing stepwise adjustment of the guide rollers 41 provided at the opposite ends of the holders 43.
  • Fine or micro-adjustment of the spacing between the guide rollers 41 can be carried out by operation of the adjusting screws 44, to cause corresponding displacement of the positions of the spindles 46 which contact the sliding cam 45.
  • the arrangement of Figure 7 provides a box B, shafts A forming pivots for the roller holders, and a tension spring S which tends to urge the guide rollers 41 apart from each other.
  • the hydraulic cylinder 32 operates to adjust directly the spacing between the guide rollers 31, but this spacing cannot be adjusted in the absence of any load i.e. when the rolling material M is not passing through the guiding unit.
  • the construction is such that the guide rollers 31 make contact with the rolling material to create positively a load without fail, and though the hydraulic pressure in the cylinder 32 is capable of adjusting the load to some extent, adjustment to a delicate pressing force is a matter of considerable difficulty.
  • the provision of the bolts 34 on the holders 33 for extending the range of displacements between the roller surfaces does not provide an easy task to carry out the necessary increments of adjustment. In particular, it is not easy to ensure by visual observations that the same amount of increase or decrease has been carried out on both of the bolts.
  • a failure to cause equal adjustment of the bolts will result in misalignment of the centrepoint of the gap between the rollers relative to the line of passage of the rolling material, thereby causing possible admission of material with shock loadings and unbalanced nipping pressure, and other so-called mis-rolling phenomena. Furthermore, it is necessary for the rolling mill to be stopped during the course of these adjusting operations, causing detrimental effects on the rate of operation of the rolling mill.
  • a rolling mill guiding unit comprising a support stand, a pair of roller holders, a pair of guide rollers rotatably mounted one on each holder at one end thereof and defining therebetween a roller gap through which rolling material is passed, a respective pivot mounting each holder on the support stand, a spring arrangement engaging with the holders so as to bias them to turn about the pivots in a direction such as to increase the roller gap between the guide rollers, and a driving device engaging with the holders and operable to cause the holders to turn about their pivots in a direction such as to reduce the roller gap and thereby force the guide rollers into engagement with the rolling material:
  • the sliders are carried one at each end of a transversely extending support element which is arranged to be capable of linear reciprocating movement parallel to the direction of passage of the rolling material under the action of a ram, and the support element comprises a pair of externally threaded and relatively movable shaft portions with oppositely directed threads, and an internally threaded pipe is mounted on the shaft portions.
  • Means is provided for rotating the pipe in order to extend or retract the shaft portions, and thereby permit fine adjustment of the roller gap via the engagement between the sliders and the pressure rollers. Therefore, in this preferred embodiment, stepless fine or micro-adjustment can readily be carried out of the roller gap in a simple and accurate manner. Furthermore, this fine adjustment can be carried out even when the rolling mill is in operation.
  • a rolling mill guiding unit which comprises a support stand (1), a pair of roller holders (2a, 2b), a pair of guide rollers (8a, 8b) rotatably mounted one on each holder at one end thereof and defining therebetween a roller gap through which rolling material (M) is passed, a respective pivot (3) mounting each holder (2a, 2b) on the support stand, a spring arrangement (20) engaging with the holders (2a, 2b) so as to bias them to turn about the pivots (3) in a direction such as to increase the roller gap between the guide rollers (8a, 8b), and a driving device (10) engaging with the holders (2a, 2b) and operable to cause the holders to turn about the pivots (3) in a direction such as to reduce the roller gap and thereby force the guide rollers into engagement with the rolling material.
  • the engagement between the driving device (10) and the holders (2a, 2b) is provided by a pair of pressure rollers (19a, 19b) mounted in the opposite end of the holders and a pair of sliders (17a, 17b) which are movable by the driving device in a direction parallel to the direction of passage of rolling material through the rolling mill and engaging continuously one each with a respective pressure roller via a smooth uninterrupted wedging surface.
  • a pair of roller holders 2a, 2b are supported on a guide box 1 via eccentric pieces 3a, 3b of an eccentric shaft 3 which serves as a pivot for swinging motion of each holder.
  • eccentric pieces 3a, 3b On the upper end of the ccentric pieces 3a, 3b are mounted worm wheels 4a, 4b and with this worm wheel a worm gear 6 supported free to rotate on a pedestal 5 is engaged.
  • a pair of sub-rollers 7a, 7b are mounted free to rotate on the eccentric shafts 3 and the distance between the sub-rollers is available for adjustment by means of revolutions of the worm gears 6.
  • a pair of guide rollers 8a, 8b are supported by journals 9a, 9b.
  • the roller gap between the guide rollers 8a, 8b is available for adjustment by an adjusting means in accordance with the change of dimensions of the rolling material M.
  • a hydraulic cylinder is adopted as a driving device 10 for a power plant and this cylinder is fastened to the guide box 1 through a frame.
  • a ram 10a of the hydraulic cylinder 10 can make a reciprocating motion to and fro by means of operation of hydraulic valve (not shown). Further, at the end of the ram 10a is mounted a U-shaped bracket 11. As shown in Fig.
  • a sliding bearing 12 provided with an internally expanding groove 12a is fixed with bolts 13. Inside the groove 12a, a rail 15 is fitted which is fixed onto the guide box 1 with a bolt 14.
  • the bracket 11 is, in accompaniment with the forward and backward displacements of the ram 10, available for translation along the rail 15.
  • a transversely extending support element, in the form of a supporting shaft 16 passes through both walls of the bracket 11 and on both ends of the supporting shaft taper sliders or wedges 17a, 17b are fixed.
  • the outside surfaces of the taper sliders 17a, 17b are inclined to the inside facing on the feeding side of the rolling material M (Refer to the righthand side of Fig. 2), the width of the slider being made narrowing down in the feed direction.
  • each one of the taper sliders 17a, 17b is kept in contact with a respective one of a pair of pressure rollers 19a, 19b, supported by shafts 18a, 18b in the rear end of the roller holders 2a, 2b.
  • the rear ends of the roller holders 2a, 2b are interconnected by a spiral spring 20 which exerts a spring force on the roller holders in such a way that the rear ends tend to approach one another, and by this spring force, the taper sliders 17a, 17b are kept in constant contact with the pressure rollers 19a, 19b.
  • this adjusting means is provided with a turnbuckle consisting of the supporting shaft 16 and an internally threaded pipe 21 mounted thereon.
  • the supporting shaft 16 is, as shown in Fig. 3, comprised of a right-handed screw 16a and a left-handed screw 16b and the inside ends of each shaft are facing each other with a distance between them and on the other hand, the outside ends are fixed securely on the side wall of the bracket 11 with key-bolts 22a, 22b.
  • the threaded shafts 16a, 16b are locked from turning by key-bolts 22a, 22b.
  • the bottom ends of the key-bolts 22a, 22b are available to slide in grooves 161a, 161b which are shaped in the outer periphery of the respective threaded shafts 16a, 16b.
  • the space between the inside ends of the threaded shafts 16a, 16b is connected with the thread fastening with the pipe 21.
  • Both end surfaces of the pipe are in contact with the inside surfaces of the side wall of the bracket 11 and on the outside periphery of the central part of the pipe is provided with a ratchet 23.
  • a round-section handle 24 is formed protruding from this ratchet for manual operation of this ratchet.
  • the ratchet 23 is turned via the round-sectioned handle 24, so that the threaded pipe 21 is turned to make outward displacements of the threaded shafts 16a, 16b respectively, whereby the taper sliders 17a, 17b force the pressure rollers 19a, 19b to the outside giving thus a slight swinging motion to the roller holders 2a, 2b with the shafts 3, 3 as the fulcrums.
  • the ratchet 23 is employed in the above example.
  • a thickwalled polygonal portion 211 in the middle of the threaded pipe as shown in Fig. 4 and Fig. 5, may also be used.
  • the width across flats of this polygonal thickened portion fits the width of the jaw of a spanner S for turning the threaded pipe.
  • the construction may be simplified because of elimination of the ratchet mechanism.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Transmission Devices (AREA)
EP85306238A 1985-05-20 1985-09-03 Rolling mill guiding unit Withdrawn EP0202377A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP60106174A JPS61266114A (ja) 1985-05-20 1985-05-20 圧延材の誘導案内装置
JP106174/85 1985-05-20

Publications (1)

Publication Number Publication Date
EP0202377A1 true EP0202377A1 (en) 1986-11-26

Family

ID=14426884

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85306238A Withdrawn EP0202377A1 (en) 1985-05-20 1985-09-03 Rolling mill guiding unit

Country Status (3)

Country Link
EP (1) EP0202377A1 (enrdf_load_stackoverflow)
JP (1) JPS61266114A (enrdf_load_stackoverflow)
KR (1) KR860008811A (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0561251A1 (en) * 1992-03-20 1993-09-22 CEDA S.p.A. COSTRUZIONI ELETTROMECCANICHE E DISPOSITIVI D'AUTOMAZIONE Device to detect surface faults in a metallic bar or wire rod in movement
WO2003022473A1 (de) * 2001-09-06 2003-03-20 Sms Meer Gmbh Rollenführung für die drahtführung zwischen den fertiggerüsten von drahtwalzstrassen
CN105689416A (zh) * 2016-04-29 2016-06-22 江苏盛日机械设备制造有限公司 一种带鼻锥的轧钢导卫
CN109317523A (zh) * 2018-10-25 2019-02-12 张家港联峰钢铁研究所有限公司 一种新型红钢中心定位可调装置
CN115569999A (zh) * 2022-10-26 2023-01-06 广西首科轨道新材料科技有限公司 一种应用于冷轧带肋钢筋双导卫轮进口导卫装置

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63294675A (ja) * 1987-05-27 1988-12-01 Fujitsu Ltd コネクタ
JPS6438111U (enrdf_load_stackoverflow) * 1987-08-26 1989-03-07
JPH044588A (ja) * 1990-04-21 1992-01-09 Osaka Gas Co Ltd 面状発熱体
JPH0679735B2 (ja) * 1990-05-28 1994-10-12 新日本製鐵株式会社 ローラガイド装置および高速ノンツイストブロックミルにおける圧延材誘導方法
JP2508136Y2 (ja) * 1990-10-09 1996-08-21 寿産業株式会社 ロ―ラガイドの間隔調整装置
JP3397512B2 (ja) * 1995-04-28 2003-04-14 寿産業株式会社 山形鋼用の入口ローラガイド
EP0767013A1 (en) 1995-10-02 1997-04-09 Shinhokoku Steel Corporation System for guiding works to be rolled
KR100516494B1 (ko) * 2001-11-20 2005-09-23 주식회사 포스코 선재 결함 탐상 가이드 장치
KR100405624B1 (ko) * 2002-10-17 2003-11-14 유병섭 압연기의 이형선재 가이딩장치
JP4597645B2 (ja) * 2004-11-26 2010-12-15 山陽特殊製鋼株式会社 圧延材のための誘導装置
KR100805067B1 (ko) 2006-10-20 2008-02-20 주식회사 포스코 선재 사이징 압연기의 입구가이드 조정장치
JP5106149B2 (ja) * 2008-01-24 2012-12-26 Ｊｆｅ条鋼株式会社 ガイドローラーの芯間調整方法及び圧延用誘導装置
CN105751038B (zh) * 2016-03-31 2019-02-05 河北银箭体育用品股份有限公司 一种标枪打磨机床
IT201700048436A1 (it) * 2017-05-04 2018-11-04 Danieli Off Mecc Apparato e metodo di guida di prodotti metallici
CN113351657B (zh) * 2021-06-23 2022-11-22 河北津西钢板桩型钢科技有限公司 万能预弯连轧导卫装置及万能连轧机

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU435254A1 (ru) * 1972-07-11 1974-07-05 Институт химии Узбекской ССР Поливинилхлоридная композиция
DE2646006A1 (de) * 1975-10-17 1977-04-21 British Steel Corp Rollenfuehrung fuer walzwerke
EP0013672A1 (en) * 1979-01-24 1980-08-06 Kotobuki Sangyo Kabushiki Kaisha A mechanism for adjusting the stock restraining effect of the guide rollers of a stock guide for a rolling mill
EP0013671A1 (en) * 1979-01-24 1980-08-06 Kotobuki Sangyo Kabushiki Kaisha 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
JPS5877709A (ja) * 1981-11-04 1983-05-11 Nippon Steel Corp 圧延線棒材誘導方法
JPS58116921A (ja) * 1981-12-29 1983-07-12 Kotobuki Sangyo Kk 抱合可変制御誘導案内装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5320531Y2 (enrdf_load_stackoverflow) * 1974-02-26 1978-05-30
JPS5728609A (en) * 1980-07-25 1982-02-16 Nippon Steel Corp Inductive guide variable embracing range of steel material

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU435254A1 (ru) * 1972-07-11 1974-07-05 Институт химии Узбекской ССР Поливинилхлоридная композиция
DE2646006A1 (de) * 1975-10-17 1977-04-21 British Steel Corp Rollenfuehrung fuer walzwerke
EP0013672A1 (en) * 1979-01-24 1980-08-06 Kotobuki Sangyo Kabushiki Kaisha A mechanism for adjusting the stock restraining effect of the guide rollers of a stock guide for a rolling mill
EP0013671A1 (en) * 1979-01-24 1980-08-06 Kotobuki Sangyo Kabushiki Kaisha 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
JPS5877709A (ja) * 1981-11-04 1983-05-11 Nippon Steel Corp 圧延線棒材誘導方法
JPS58116921A (ja) * 1981-12-29 1983-07-12 Kotobuki Sangyo Kk 抱合可変制御誘導案内装置

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 7, no. 173 (M-232)[1318], 30th July 1983; & JP - A - 58 77709 (SHIN NIPPON) 11-05-1983 *
PATENT ABSTRACTS OF JAPAN, vol. 7, no. 223 (M-247)[1368], 4th October 1983; & JP - A - 58 116 921 (KOTOBUKI) 12-07-1983 *
SOVIET INVENTIONS ILLUSTRATED, Mechanical Section, Week 84/25, P 51, 1st August 1984, abstract no. 84-157749, Derwent Publications Ltd., London, GB; & SU - A - 435 254 (DON FERR METAL) 15-10-1983 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0561251A1 (en) * 1992-03-20 1993-09-22 CEDA S.p.A. COSTRUZIONI ELETTROMECCANICHE E DISPOSITIVI D'AUTOMAZIONE Device to detect surface faults in a metallic bar or wire rod in movement
US5412319A (en) * 1992-03-20 1995-05-02 Ceda Spa Construzioni Elettromeccaniche E Dispositivi D'auto-Mazione Device to detect disturbances in an electromagnetic field induced by surface faults in a metallic bar or wire rod in movement
WO2003022473A1 (de) * 2001-09-06 2003-03-20 Sms Meer Gmbh Rollenführung für die drahtführung zwischen den fertiggerüsten von drahtwalzstrassen
US7062946B2 (en) 2001-09-06 2006-06-20 Sms Meer Gmbh Guide roller system for guiding the rods between the finishing stands of rod rolling mills
CN105689416A (zh) * 2016-04-29 2016-06-22 江苏盛日机械设备制造有限公司 一种带鼻锥的轧钢导卫
CN109317523A (zh) * 2018-10-25 2019-02-12 张家港联峰钢铁研究所有限公司 一种新型红钢中心定位可调装置
CN115569999A (zh) * 2022-10-26 2023-01-06 广西首科轨道新材料科技有限公司 一种应用于冷轧带肋钢筋双导卫轮进口导卫装置

Also Published As

Publication number Publication date
JPH0242006B2 (enrdf_load_stackoverflow) 1990-09-20
KR860008811A (ko) 1986-12-18
JPS61266114A (ja) 1986-11-25

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Inventor name: YOSHIZAWA, SADAOC/O KOTOBUKI SANGYO K.K.