US3727446A - Entry guide for rolling mills - Google Patents

Entry guide for rolling mills Download PDF

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Publication number
US3727446A
US3727446A US00088789A US3727446DA US3727446A US 3727446 A US3727446 A US 3727446A US 00088789 A US00088789 A US 00088789A US 3727446D A US3727446D A US 3727446DA US 3727446 A US3727446 A US 3727446A
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US
United States
Prior art keywords
strip
rollers
cooperative
horizontal
spaced
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 - Lifetime
Application number
US00088789A
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English (en)
Inventor
C Shumaker
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.)
United Engineering and Foundry Co
United Engineering Inc
Original Assignee
United Engineering and Foundry Co
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 United Engineering and Foundry Co filed Critical United Engineering and Foundry Co
Application granted granted Critical
Publication of US3727446A publication Critical patent/US3727446A/en
Assigned to WEAN UNITED, INC. reassignment WEAN UNITED, INC. RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). TO RELEASE SECURTIY DOCUMENT RECORDED AT REEL, FRAME 4792/307 RECORDED FEB. 26, 1987 Assignors: PITTSBURGH NATIONAL BANK
Assigned to UNITED ENGINEERING ROLLING MILLS, INC. reassignment UNITED ENGINEERING ROLLING MILLS, INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: WEAN INCORPORATED
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/34—Feeding or guiding devices not specially adapted to a particular type of apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
    • B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers

Definitions

  • the frames also carry vertically arranged opposed strip side guiding rolls which are interspaced between the horizontal rollers. These rolls are mounted so as to move with the frames.
  • An upper frame is provided for rotatably supporting an upper set of spaced-apart horizontal rollers, one for each roller of the lower set, which are adapted to be brought into a working relationship with the lower horizontal rollers in a manner that one roller of each cooperative pair assumes an offset relationship with the other roller of the same cooperative pair.
  • the entry guides also guide the strip during feeding thereof in addition to serving to flatten the strip as it enters into the mill.
  • the guide for the first standof a tandem cold mill since it receives the strip as imrnediately unwound from a coil, is usually maintained in contact with the stop durlng the entlre ength of the coil due to the non-flatness of the strip; whereas the guides for the other succeeding stands are usually opened up after the leading end is fed into the stand.
  • a strip entry guide and particularly for the first stand of a tandem cold strip mill comprising spaced-apart sets of rollers upper and lower horizontal, non-driven wherein the rollers of each set are arranged in the same vertical plane. Between the horizontal set there is usually provided vertical non-driven guide rollers for restraining and guiding the opposite edges of the strip passing to the mill.
  • the horizontal rollers are brought into engagement with the strip, usually after the leading end had entered the mill, for the purpose of flattening the strip by a pinching action. It was found, however, that not only was this arrangement ineffective to properly flatten the strip, but that the pinching action may create a marking on the strip which was highly objectionable. As noted previously, it is customary to maintain the rollers in engagement with the strip during the uncoiling of the entire coil so that the entire length of the strip may be marked.
  • ENTRY GUIDE FOR ROLLING MILLS It is customary in operating tandem cold rolling mills for ferrous and non-ferrous metals to provide various forms of entry guides or stickers that assist in entering the leading end of the strip into the bite of the mill.
  • the entry guides also guide the strip during feeding thereof in addition to serving to flatten the strip as it enters into the mill.
  • the guide for the first stand of a tandem cold mill since it receives the strip as immediately unwound from a coil, is usually maintained in contact with the strip during the entire length of the coil due to the nonflatness of the strip; whereas the guides for the other succeeding stands are usually opened up after the leading end is fed into the stand.
  • a strip entry guide and particularly for the firststand of a tandem cold strip mill comprising spaced-apart sets of upper and lower horizontal, non-driven rollers wherein the rollers of each set are arranged in the same vertical plane. Between the horizontal set there is usually provided vertical non-driven guide rollers for restraining and guiding the opposite edges of the strip passing to the mill.
  • the horizontal rollers are brought into engagement with the strip, usually after the leading end had entered the mill,'for the purpose of flattening the strip by a pinching action. It was found, however, that not only was this arrangement ineffective to properly flatten the strip, but that the pinching action may create a marking on the strip which was highly objectionable. As noted previously, it is customary to maintain the rollers in engagement with the strip during the uncoiling of the entire coil so that the entire length of the strip may be marked.
  • the present invention provides an improved strip entry guide adapted to avoid pinching of the strip in a manner that the strip is deflectedv around a number of rollers to obtain a significant amount of flattening.
  • the present invention provides an entry guide for a rolling mill or similar device comprising a pair of spaced-apart lower horizontal rollers adapted to cooperate with a like number of upper horizontal rollers, the rollers being offset in the manner to deflect the strip around a portion of the rollers when the rollers are brought into cooperative working relationship to flatten the strip passing into the mill or similar processing apparatus.
  • It is a still further object of the present invention to provide a strip entry guide for rolling mills or similar devices having a pair of spaced-apart lower frames for rotatably supporting a first setof spaced-apart horizontal rollers arranged transversely of the path of travel of the strip, means for adjusting the lower frames transversely relative to each other and means for mounting the horizontal rollers to allow relative movement of the frames with respect to the first set of horizontal rollers, spaced-apart vertical rollers mounted on each lower frame between the horizontal rollers and attached to the lower frames so that they move transversely therewith, an upper frame for rotatably carrying a second set of spaced-apart horizontal rollers equal in number to the rollers of said first set, means for bringing the upper set of horizontal rollers into an operative relationship with the lower set of horizontal rollers and means for causing one of the rollers of each cooperative pair to assume an offset relationship with the other roller of the same cooperative pair.
  • FIG. 1 is an elevational view, partly in section, of a strip entry guide incorporating the features of the present invention.
  • FIG. 2 is a composite plan and partial sectional view of the entry guide shown in FIG. 1.
  • the invention relates to a strip entry guide for use in a tandem cold reduction rolling mill or like device, in which connection there is illustrated in the figures, particularly FIG. 2, a portion of the vertical opposed housings 11 and 12 of a rolling mill, it being understood for brevitys sake that the other customary elements that make up the rolling have not been shown since such is not necessary to understand the invention. It is important to appreciate,
  • FIG. 1 the work rolls l4 and 15 together with their backup rolls 16 and 17 have been illustrated.
  • the lower portion of the guide is made up of two spaced-apart frames 18 and 19 which are mounted on a pair of guide rods 21 and 22 extending between and carried by the housings l1 and 12.
  • These guide rods are provided with tubular liners 23 which allow the frames 18 and 19 to move transversely towards and away from the edges of the strip passing to the work rolls 14 and 15.
  • an electrical motor 24 is provided which is connected to a gearreduction unit 25 and which by chains 26 and 27 is connected to spaced-apart shafts 28 and 29, which run in the same direction as the guide rods 21 and 22.
  • the shafts 28 and 29 have left and right-hand threads which mesh with the threads of non-rotating nuts 30 so that, I
  • the guide frames are brought towards and away from each other in unison.
  • rollers 31, 32 and 33 are received and supported by similar base members 34 which are mounted on the frames 18 and 19 in a manner that allows the frames to slide relative to the base members 34 that rotatably support the rollers 31, 32 and 33.
  • the rollers as shown in FIG. 2, extend between the housings 11 and 12 and have a length sufficient to support the maximum width strip passing to the mill.
  • each frame spaced between the rollers 31, 32 and 33, are four freely rotatable, but non-driven, vertical rolls 35, 36, 37 and 38 which are supported by the frames 18 and l9'and connected to them so that they move transversely upon the movement of the'frames.
  • the vertical rolls 35 38 of each frame are spaced directly across from each other and between them there are arranged narrow supports 39, 40, 41 and 42 having their top surface in line with the top surfaces of the rollers 31 33 for supporting the strip between the rollers 31 33.
  • the supports 39 41 are mounted on the frames 18 and 19 adjacent to the vertical' rolls 35 38 and move with the frames on the traverse movement thereof.
  • the guide 13 is made up of a frame 43 which is adapted to move vertically in a vertical plate 44 that is secured to the housings 11 and 12, the plate 43 having guide liners 45 secured to it which slides against the plate 44, as best shown in FIG. 2.
  • the frame 43 has a cross-structure 46 to which there is secured at its top the lower end of a piston rod of a piston cylinder assembly 47
  • the piston cylinder assembly is likewise supported on the plate 44 and adapted to move the frame 43 in a vertical direction in the guides 45.
  • the cross structure 46 is adapted to support an upper set of non-driven, but freely rotatable, horizontally spaced-apart rollers, for which purpose there are provided blocks 47 which are arranged with respect to the lower rollers so that the upper rollers 48, 49 and 51 are offset with respect to the lower rollers 31-33, as shown in FIG. 1.
  • blocks 47 which are arranged with respect to the lower rollers so that the upper rollers 48, 49 and 51 are offset with respect to the lower rollers 31-33, as shown in FIG. 1.
  • This gap can be determined by several well-known devices, such as an adjustable stop or an adjustment of the length of the piston cylinder assembly 47.
  • the amount of the offset will vary depending on the characteristics of the strip and for a given mill may be adjustable to provide the best flattening for the various types of strip to be rolled.
  • the illustrated coiled into the mill - the cylinder 47 is operated to lift the rollers 48, 49 and 51 away from the lower rollers 31, 32 and 33.
  • the motor 24 is operated to space the vertical rolls with reference to the particular width of strip to be uncoiled so that the vertical rolls will be in position to engage the edges thereof and assist in maintaining the strip in the proper relationship transversely of the mill.
  • the cylinder 47 When the front end of the strip is brought to the guide 13, the cylinder 47 is operated to bring the top horizontal rollers 48, 49 and 51 into a working relationship with the lower horizontal rollers 31, 32 and 33 so that the strip, as fed in, although it may be unflat by reason of its being uncoiled from the coil, or for other reasons, will be worked at a point below its yield point around the arcuate contact formed by the offset sets of rollers and fed into the mill in a relatively flat condition.
  • the entry guide is mounted before the first stand of a tandem reduction mill, the rollers thereof will be left in contact with the strip during the entire operation, but should it be the guide associated with one of the succeeding stands, the cylinder 47 will be operated to lift the upper roller set after the leading end of the strip has been fed to the work rolls.
  • a strip guiding apparatus comprising a first frame arranged below a path of travel of a strip
  • the relationship of the cooperative pairs of rollers being such as to cause the strip to encircle a portion of at least one of the rollers of each cooperative pair without pinching the strip between the cooperative pairs of rollers to thereby flatten the strip as it passes through said guiding apparatus,
  • a strip guiding apparatus including means for rotatably supporting said vertical rollers on the entry and delivery sides of said first frame.
  • a pair of spaced-apart'lower frames for rotatably sup porting a first set of spacedapart horizontal rollers arranged transversely of the path of travel of the strip and in a common plane,
  • an upper frame for rotatably supporting a second set i of spaced-apart horizontal rollers equal in number to the rollers of said first set arranged transversely of the path of travel of the strip and in a common plane,
  • spaced-apart vertical rollers mounted on each lower frame in the space between each cooperative pair of horizontal rollers and carried by the lower frames so that they move transversely therewith.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
US00088789A 1970-01-12 1970-11-12 Entry guide for rolling mills Expired - Lifetime US3727446A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB143570 1970-01-12

Publications (1)

Publication Number Publication Date
US3727446A true US3727446A (en) 1973-04-17

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US00088789A Expired - Lifetime US3727446A (en) 1970-01-12 1970-11-12 Entry guide for rolling mills

Country Status (5)

Country Link
US (1) US3727446A (index.php)
JP (1) JPS4917947B1 (index.php)
CA (1) CA944197A (index.php)
FR (1) FR2076040B1 (index.php)
GB (1) GB1320161A (index.php)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5860311A (en) * 1996-04-23 1999-01-19 Danieli & C. Officine Meccaniche Spa Method to guide the strip between the stands in a rolling mill finishing train and relative device
CN106694560A (zh) * 2015-07-17 2017-05-24 宝山钢铁股份有限公司 高强度分体式立辊托辊

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2207206C2 (ru) * 2000-01-28 2003-06-27 Открытое акционерное общество "Электростальский завод тяжелого машиностроения" Передний стол стана винтовой прокатки

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2001637A (en) * 1933-01-11 1935-05-14 United Eng Foundry Co Rolling mill feeding apparatus
US2651955A (en) * 1952-05-20 1953-09-15 William J Fisher Stock guide for rolling mills and the like
US3071032A (en) * 1960-03-30 1963-01-01 United States Steel Corp Adjustable side guide and hold-down for a tandem cold reduction mill
GB978773A (en) * 1961-02-22 1964-12-23 Voest Ag Improvements in or relating to devices for guiding the sides of metal strip
US3398566A (en) * 1966-01-24 1968-08-27 Garvey Joseph Lee Guide means
US3406553A (en) * 1966-04-28 1968-10-22 Bliss E W Co Clamping and sticking guide
US3614881A (en) * 1968-06-25 1971-10-26 Mesta Machine Co Automatic threading devices for cold mills

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1564696A (en) * 1924-04-25 1925-12-08 Locke Steel Chain Co Strip-metal straightener

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2001637A (en) * 1933-01-11 1935-05-14 United Eng Foundry Co Rolling mill feeding apparatus
US2651955A (en) * 1952-05-20 1953-09-15 William J Fisher Stock guide for rolling mills and the like
US3071032A (en) * 1960-03-30 1963-01-01 United States Steel Corp Adjustable side guide and hold-down for a tandem cold reduction mill
GB978773A (en) * 1961-02-22 1964-12-23 Voest Ag Improvements in or relating to devices for guiding the sides of metal strip
US3398566A (en) * 1966-01-24 1968-08-27 Garvey Joseph Lee Guide means
US3406553A (en) * 1966-04-28 1968-10-22 Bliss E W Co Clamping and sticking guide
US3614881A (en) * 1968-06-25 1971-10-26 Mesta Machine Co Automatic threading devices for cold mills

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5860311A (en) * 1996-04-23 1999-01-19 Danieli & C. Officine Meccaniche Spa Method to guide the strip between the stands in a rolling mill finishing train and relative device
CN106694560A (zh) * 2015-07-17 2017-05-24 宝山钢铁股份有限公司 高强度分体式立辊托辊
CN106694560B (zh) * 2015-07-17 2018-11-06 宝山钢铁股份有限公司 高强度分体式立辊托辊

Also Published As

Publication number Publication date
CA944197A (en) 1974-03-26
JPS4917947B1 (index.php) 1974-05-07
FR2076040A1 (index.php) 1971-10-15
FR2076040B1 (index.php) 1974-02-15
GB1320161A (en) 1973-06-13

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AS Assignment

Owner name: PITTSBURGH NATIONAL BANK

Free format text: SECURITY INTEREST;ASSIGNOR:WEAN UNITED, INC., A CORP.OF OH;REEL/FRAME:004458/0765

Effective date: 19850610

AS Assignment

Owner name: PITTSBURGH NATIONAL BANK,PENNSYLVANIA

Free format text: SECURITY INTEREST;ASSIGNOR:WEAN UNITED, INC., A CORP. OH.;REEL/FRAME:004792/0307

Effective date: 19860630

Owner name: PITTSBURGH NATIONAL BANK

Free format text: SECURITY INTEREST;ASSIGNOR:WEAN UNITED, INC., A CORP. OH.;REEL/FRAME:004792/0307

Effective date: 19860630

AS Assignment

Owner name: WEAN UNITED, INC.

Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:PITTSBURGH NATIONAL BANK;REEL/FRAME:004925/0218

Effective date: 19880509

AS Assignment

Owner name: UNITED ENGINEERING ROLLING MILLS, INC.

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:WEAN INCORPORATED;REEL/FRAME:004920/0256

Effective date: 19880610