US3834637A - Coil stabilising system - Google Patents

Coil stabilising system Download PDF

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Publication number
US3834637A
US3834637A US00366291A US36629173A US3834637A US 3834637 A US3834637 A US 3834637A US 00366291 A US00366291 A US 00366291A US 36629173 A US36629173 A US 36629173A US 3834637 A US3834637 A US 3834637A
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US
United States
Prior art keywords
coil
rollers
roller
idler
driven roller
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
US00366291A
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English (en)
Inventor
G Reed
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.)
British Steel PLC
Original Assignee
British Steel Corp
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 British Steel Corp filed Critical British Steel Corp
Application granted granted Critical
Publication of US3834637A publication Critical patent/US3834637A/en
Assigned to BRITISH STEEL PLC reassignment BRITISH STEEL PLC CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). (BRITISH STEEL ACT 1988 (APPOINTED ORDER 1988, DATED AUG. 2, 1988. Assignors: BRITISH STEEL CORPORATION
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
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, 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
    • B21C47/28—Drums or other coil-holders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, 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
    • B21C47/16—Unwinding or uncoiling
    • B21C47/22—Unwinding coils without reels or drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/04—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material the articles being rotated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H16/00—Unwinding, paying-out webs
    • B65H16/10—Arrangements for effecting positive rotation of web roll
    • B65H16/106—Arrangements for effecting positive rotation of web roll in which power is applied to web roll
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00—Winding webs
    • B65H18/08—Web-winding mechanisms
    • B65H18/14—Mechanisms in which power is applied to web roll, e.g. to effect continuous advancement of web
    • B65H18/20—Mechanisms in which power is applied to web roll, e.g. to effect continuous advancement of web the web roll being supported on two parallel rollers at least one of which is driven

Definitions

  • An apparatus for supporting a coil of strip material and for rotating it about its polar axis comprises two sets of rollers arranged in parallel side-by-side rela tion, each set of rollers being coaxial upon a shaft.
  • One driven roller is provided to rotate the coil by frictional engagement therewith, the remaining said rollers being idlers whose peripheral speed is permitted to vary compared to that of the driven roller to accommodate local variations in the peripheral speed of the coil which may arise due to local variations in coil radius.
  • the width of the coil contacting surface of each roller constitutes a minor portion only of the axial distance spanning the said surfaces of the two rollers axially most distant from each other.
  • This invention relates to apparatus for supporting and rotating about its polar axis an object of circular cross section the radius of which varies along its polar axis.
  • An example of such an object is a coil of strip material.
  • the invention is particularly but not exclusively applicable to apparatus for supporting and rotating coils of metal strip which are to be packaged.
  • the coil is not cylindrical, it does not ride properly on the two rolls. Instead there is some slip between the rollers and parts of the coil, due to its variation in radius from one end to the other, and we believe this results in the undesirable axial movement of the coil.
  • the present invention can be used to provide a solution to this problem, although it is to be understood that the invention is not limited necessarily to apparatus in which this problem occurs and/or is solved.
  • an apparatus for supporting a coil of strip material and for rotating it about its polar axis comprising a plurality of idler rollers adapted to support the coil and at least one driven roller adapted to rotatethe coil by frictional engagement therewith, said rollers being spaced from each other to contact the periphery of the coil at intervals along its axial extent; the width of the coil contacting surface of each said roller constituting a minor portion only of the axial distance spanning the said surfaces of the said two rollers axially most distant from each other; the arrangement being such that, in operation, the coil is rotated in rolling contact with said idler rollers, the peripheral speed of each said idler roller being permitted to vary compared to that of said driven roller to accomodate local variations in the peripheral speed of the coil.
  • roller used herein of course includes a wheel of small axial length compared to its diameter.
  • the one or more driven rollers may be arranged also to support the coil.
  • the width of the coil contacting surface of each roller is less than one third of the axial distance spanning the two axially most distant rollers.
  • the said width may with advantage be less than one fifth of the said distance, or even less than one eighth or one tenth.
  • each supporting roller ultimately is limited by the permissibile contact pressure on the coil surface.
  • a coil of metal strip may be marked by excessive contact pressure.
  • the driven roller may be arranged coaxially with one or more said idler rollers, the driven roller being slightly larger in diameter than the idler roller(s).
  • said idler rollers are arranged coaxially with each other, said rollers being disposed parallel to and sideby-side with the aforementioned coaxial rollers.
  • the means for tilting may comprise means for increasing the effective radius of the coil-contacting surface of one or more of said idler rollers.
  • one or more idler rollers may be pivotally mounted and shaped such that said axial movement of the coil tilts the roller and increases its said effective radius.
  • the said roller may be pivotally mounted on a spherical bearing.
  • Pivotally mounted idler rollers may be disposed on opposite sides of a said driven roller so that axial movement of the coil in either direction is opposed.
  • the coil-contacting surface of the at least one driven roller may be of a material (e.g. rubber) adapted to improve frictional engagement of the roller with the coil surface.
  • FIGS. 1 and 2 are an elevation and plan of apparatus according to one embodiment of the invention.
  • FIG. 3 is an enlarged sectional view of part of the apparatus of FIG. 1;
  • FIGS. 4 and 5 are an elevation and plan of apparatus according to another embodiment of the invention.
  • FIG. 6 is an enlarged sectional view of part of the apparatus of FIG. 4, and I FIG. 7 is a plan view of apparatus according to a further embodiment of the invention.
  • a coil of steel strip is supported upon two parallel sets of coaxial rollers 12, 14.
  • the set of rollers 12 comprises a driven roller 16 and two idler rollers 18, 20.
  • the rollers are supported upon a live shaft 22, which in turn is carried in trunnions 24.
  • the driven roller 16 is fixedly mounted on the shaft 22 whereas the idler rollers 18, 20 are rotatably mounted on the shaft as shown in FIG. 3.
  • a sleeve 26 having a facing 28 of polytetra fluoroethylene is carried on the shaft 22, and the roller 18 is rotatably mounted on the sleeve.
  • the roller 18 has an inner facing 30 of polytetra fluoroethylene.
  • the idler roller 20 is similarly mounted.
  • the live shaft 22 is driven by an electric motor 32 via gearing 33, 34.
  • the roller 16 has a facing of a highfriction material such as rubber and is slightly larger in diameter than the rollers 18, 20.
  • the construction and mountings of the set of rollers 14 is exactly the same as that of the set 12, except that the shaft 35 and the middle roller 36 are not driven.
  • the roller 36 does not have a rubber facing, and is effectively an idler roller.
  • the coil 10 is cradled on the six rollers 16, 18, 20, 36, 38, 40 and bears most heavily on the driven roller 16 due to its slightly larger diameter.
  • the roller 16 When the roller 16 is rotated, its rubber facing frictionally engages the coil and rotates it about its polar axis.
  • the coil rolls upon the five idler rollers, each idler roller adapting a peripheral speed appropriate to the peripheral speed of the portion of coil with which it is in contact.
  • rollers have coil contacting surfaces which are relatively narrow compared to the overall distance 42 spanning the most distant rollers 18 and 20 or 38 and 40. This avoids slip or scrubbing between the coil and the rollers which may occur due to variations in the radius of the coil over a wide roller.
  • the coil contacting surfaces of the rollers 16, 36 are rather less than one fifth of the distance 42 and the widths of the corresponding surfaces of the rollers 18, 20, 38, 40 each are rather less than one twelfth of the distance 42.
  • Wider rollers than those illustrated can be used subject to the limitation that no single one has a coil contacting surface exceeding a minor portion of the distance 42. That is to say the width of each coilcontacting surface must be less than one half of the distance 42.
  • FIGS. 4 The embodiment of the invention shown in FIGS. 4 and has a majority of parts identical with those in FIGS. 1 and 2. These parts carry the same reference numerals as before. Modified parts carry primed reference numerals.
  • the shafts 22, 35 are not rotatably mounted, but are merely supported in suitable blocks 24.
  • the driven roller 16' and the gear wheel 34 are fixedly mounted on a sleeve 44 which is rotatably mounted on the shaft 22.
  • the idler roller 36 is similarly mounted on the shaft 35'.
  • the idler rollers 18, 20 each are conical in shape and have their larger ends facing inwards towards each other.
  • the rollers 38, 40' are identical to the rollers 18, 20.
  • the rollers 20, 40' are mounted on their shafts by an arrangement as shown in FIG. 6.
  • the rollers 18, 38 are mounted by a similar arrangement reversed left to right.
  • the roller 20' is supported on the outer race 46 of a spherical bearing, the centre of the spherical bearing surface being on the polar axis of the shaft 22.
  • the race 46 and the roller 20 are free to tilt (clockwise as shown in the figure) about the centre of the spherical bearing against the action of a spring 48 which biases them towards a fixed abutment 50 having 21 facing 52 of anti-friction bearing material.
  • the abutment 50 does not extend below the centre of the spherical bearing, so that tilting of the outer race 46 is not impeded.
  • FIG. 7 shows an embodiment of the invention which can accomodate coils of different widths.
  • the apparatus is identical to that of FIG. 1 except that additional idler rollers 50, 52, 54, 56 are provided.
  • the span between the rollers 50, 54, and 52, 56 is less than between the rollers 18, 38 and 20, 40 so narrower coils can be .accomodated.
  • the width of the coil contacting surfaces of the rollers 16, 36 is rather less than one third of the distance spanning the rollers 50 and 52 or 54 and 56.
  • the widths of the surfaces of the rollers 50, 52, 54, 56 are rather less than one tenth of that distance.
  • roller 36 in any of the embodiments can conveniently be driven by the motor 32 at the same speed as the roller 16.
  • the roller 36 should then be rubber faced like the roller 16.
  • Apparatus for supporting a coil of strip material and for rotating it about its polar axis comprising: a plurality of idler rollers adapted to support the coil and at least one driven roller also adapted to support the coil, the driven roller and at least one of said idler rollers being arranged coaxially with each other and said driven roller being of slightly larger diameter than the idler rollers coaxial therewith, said driven roller being adapted to rotate the coil by frictional engagement therewith, said rollers being spaced from each other to contact the periphery of the coil at intervals along its axial extent; the width of the coil-contacting surface of each roller constituting a minor portion only of the axial distance spanning the surface of the two rollers axially most distant from each other; whereby, upon rotation of the coil, the peripheral speed of each said idler roller can vary compared to the speed of said driven roller to accommodate local variations in the peripheral speed of the coil.
  • Apparatus as claimed in claim 2 comprising means for tilting the rotating coil to oppose movement of the coil axially of itself.
  • Apparatus as claimed in claim 3 wherein the means for tilting comprises means for increasing the effective radius of the coil contacting surface of one or more of said idler rollers.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Winding Of Webs (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
  • Unwinding Webs (AREA)
US00366291A 1972-06-05 1973-06-04 Coil stabilising system Expired - Lifetime US3834637A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2609072A GB1434014A (en) 1972-06-05 1972-06-05 Apparatus for supporting and rotating an object of circular cross section

Publications (1)

Publication Number Publication Date
US3834637A true US3834637A (en) 1974-09-10

Family

ID=10238214

Family Applications (1)

Application Number Title Priority Date Filing Date
US00366291A Expired - Lifetime US3834637A (en) 1972-06-05 1973-06-04 Coil stabilising system

Country Status (9)

Country Link
US (1) US3834637A (fr)
JP (1) JPS5528981B2 (fr)
BE (1) BE800449A (fr)
CA (1) CA989798A (fr)
DE (1) DE2328099A1 (fr)
FR (1) FR2188581A5 (fr)
GB (1) GB1434014A (fr)
IT (1) IT985992B (fr)
NL (1) NL7307842A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5181368A (en) * 1991-12-17 1993-01-26 Deere & Company Housing for holding a supply roll of large round bale wrap material
US5934603A (en) * 1996-06-06 1999-08-10 Eastman Kodak Company Surface winder undercut drive roller apparatus and method
EP0960741A1 (fr) * 1998-05-28 1999-12-01 Gerber Scientific Products, Inc. Dispositif pour réenrouler du matériau sous forme de bande et systèmes aux produits graphiques
US20060169828A1 (en) * 2005-02-01 2006-08-03 Murata Kikai Kabushiki Kaisha Method and device for unwinding yarn from package
CN105857785A (zh) * 2016-06-21 2016-08-17 中北大学 钢卷包装支撑平台

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0447742Y2 (fr) * 1986-02-20 1992-11-11

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2267161A (en) * 1938-11-02 1941-12-23 Littell Machine Co F J Cradle type reel with rotary plates
US2345373A (en) * 1941-10-24 1944-03-28 Maurice D Ayers Uncoiling apparatus
US2760544A (en) * 1950-12-14 1956-08-28 United States Steel Corp Strip handling apparatus
US3154263A (en) * 1963-05-08 1964-10-27 Zedco Co Inc Self-centering coil cradle
US3692252A (en) * 1970-10-30 1972-09-19 Eastman Kodak Co Surface winding apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2267161A (en) * 1938-11-02 1941-12-23 Littell Machine Co F J Cradle type reel with rotary plates
US2345373A (en) * 1941-10-24 1944-03-28 Maurice D Ayers Uncoiling apparatus
US2760544A (en) * 1950-12-14 1956-08-28 United States Steel Corp Strip handling apparatus
US3154263A (en) * 1963-05-08 1964-10-27 Zedco Co Inc Self-centering coil cradle
US3692252A (en) * 1970-10-30 1972-09-19 Eastman Kodak Co Surface winding apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5181368A (en) * 1991-12-17 1993-01-26 Deere & Company Housing for holding a supply roll of large round bale wrap material
US5934603A (en) * 1996-06-06 1999-08-10 Eastman Kodak Company Surface winder undercut drive roller apparatus and method
EP0960741A1 (fr) * 1998-05-28 1999-12-01 Gerber Scientific Products, Inc. Dispositif pour réenrouler du matériau sous forme de bande et systèmes aux produits graphiques
US20060169828A1 (en) * 2005-02-01 2006-08-03 Murata Kikai Kabushiki Kaisha Method and device for unwinding yarn from package
CN105857785A (zh) * 2016-06-21 2016-08-17 中北大学 钢卷包装支撑平台

Also Published As

Publication number Publication date
DE2328099A1 (de) 1973-12-20
BE800449A (fr) 1973-10-01
GB1434014A (en) 1976-04-28
IT985992B (it) 1974-12-30
FR2188581A5 (fr) 1974-01-18
NL7307842A (fr) 1973-12-07
JPS5528981B2 (fr) 1980-07-31
JPS4951151A (fr) 1974-05-17
CA989798A (en) 1976-05-25

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Legal Events

Date Code Title Description
AS Assignment

Owner name: BRITISH STEEL PLC

Free format text: CHANGE OF NAME;ASSIGNOR:BRITISH STEEL CORPORATION;REEL/FRAME:004993/0383

Effective date: 19881006