EP0845307A1 - Dispositif de coupe longitudinale pour laminoir - Google Patents

Dispositif de coupe longitudinale pour laminoir Download PDF

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Publication number
EP0845307A1
EP0845307A1 EP97309677A EP97309677A EP0845307A1 EP 0845307 A1 EP0845307 A1 EP 0845307A1 EP 97309677 A EP97309677 A EP 97309677A EP 97309677 A EP97309677 A EP 97309677A EP 0845307 A1 EP0845307 A1 EP 0845307A1
Authority
EP
European Patent Office
Prior art keywords
pass line
discs
slitting
slitting discs
product
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Withdrawn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
EP97309677A
Other languages
German (de)
English (en)
Inventor
Terence Michael Shore
Melicher Puchovsky
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.)
Siemens Industry Inc
Original Assignee
Morgan Construction 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 Morgan Construction Co filed Critical Morgan Construction Co
Publication of EP0845307A1 publication Critical patent/EP0845307A1/fr
Withdrawn legal-status Critical Current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
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/08—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel
    • B21B1/0815—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel from flat-rolled products, e.g. by longitudinal shearing

Definitions

  • This invention relates generally to rolling mills producing elongated products such as bars, rods and the like, and is concerned in particular with an improved apparatus for longitudinally subdividing a relatively large intermediate, elongated product moving axially along a pass line into multiple smaller strands which are then directed to parallel continuing pass lines for further rolling into finished products.
  • a pair of rotatably driven slitting discs 10a, 10b are arranged on opposite sides of a pass line L.
  • the periphery of each slitting disc is defined by angled shoulders 12 tapering to a sharpened edge 14.
  • a product P is directed along the pass line between the slitting discs.
  • the product Prior to its arrival at the slitting discs, and as shown in Figure 3, the product has a shaped cross section comprised of at least two segments 16, 18 joined one to the other by an intermediate web 20 of reduced thickness.
  • the segments 16, 18 will have a somewhat oval cross-section with major and minor dimensions D 1 , D 2 respectively.
  • the need to laterally pull the segments apart limits the number of strands that can be created to not more than two during each slitting operation.
  • An objective of the present invention is to arrange the slitting discs so that they may effect a clean cut through the webs connecting product segments, thus eliminating the need to tear the webs apart. This in turn eliminates or at least significantly reduces any jagged surface imperfections on the separated strands.
  • a related objective of the present invention is to achieve the aforesaid optimized arrangement of the slitting discs without bringing the discs into damaging contact with each other.
  • a companion objective of the present invention is the provision of means for adjusting the relative positions of the slitting discs, thereby making it possible to compensate for disc wear without compromising product quality.
  • Another objective of the present invention is the provision of multiple pairs of slitting discs arranged to subdivided products into three or more strands.
  • the above objectives are achieved in accordance with the invention which in a broad aspect comprises apparatus for longitudinally sub-dividing an elongated product into two or more strands, the apparatus comprising at least two rotatable slitting discs arranged in substantially the same plane on opposite sides of a pass line, the rotational axes of the discs being offset one from the other in the direction of movement of the elongated product along the pass line.
  • circular slitting discs are rotatably mounted in coplanar pairs on opposite sides of a pass line.
  • a relatively large shaped intermediate product section is directed along the pass line.
  • the intermediate product section has at least two segments joined by an intermediate web, and the peripheries of the slitting discs are arranged to penetrate that web from opposite sides of the pass line.
  • the rotational axes of the slitting discs are offset one from the other in the direction of product movement along the pass line, thereby allowing for increased penetration of the disc peripheries into the product web, and without one disc periphery coming into damaging contact with the other disc periphery.
  • the slitting discs are rotatably driven in opposite directions urging the product along the pass line while effecting a smooth cut of the connecting web as the product segments are separated into smaller strands.
  • the slitting disc peripheries are tangent to a common line, and that common line is preferably the pass line along which the product is being directed.
  • multiple pairs of slitting discs are arranged to simultaneously subdivide a product into three or more strands.
  • the rotational axes of the slitting discs are preferably adjustable to accommodate disc wear without compromising the quality of the separated strands.
  • a slitting apparatus in accordance with the present invention is generally depicted at 26.
  • the apparatus is designed to longitudinally subdivide an elongated product P moving axially along a pass line L 2 .
  • the product P has been configured by previous rolling operations (not shown) into a plurality of segments 28, 30, 32 and 34 joined one to the other by relatively thin intermediate webs 36.
  • a plurality of pairs of slitting discs 38,40 are carried on parallel support shafts 42 arranged on opposite sides of the pass line L.
  • the support shafts are journalled by roller and thrust bearing assemblies 44, 46 for rotation in eccentric sleeves 48, the latter in turn being journalled for rotation in a suitable housing structure generally depicted at 50.
  • the rotational axes A of the support shafts 42 are offset one from the other by a distance "X" measured in the direction of product movement along the pass line L.
  • new slitting discs 38 will have diameters ranging from about 150 to 200 mm, and the offset distance X will typically be in the range of about 10 to 30 mm.
  • the offset distance X will be less than about 5 % of the maximum diameter of the slitting discs.
  • the slitting discs 38, 40 of each pair are arranged in a coplanar relationship.
  • the offset distance X enables the peripheries 38', 40' of the slitting discs to be brought closer together with respect to the webs 36 without one coming into damaging contact with the other.
  • the peripheries 38', 40' are each tangent to but at different locations along a common line which advantageously is the pass line L.
  • each disc periphery 38', 40' can penetrate a web 36 to a greater extent, thereby achieving a clean cut without having to pull the interconnected segments apart in order to tear any unsevered web portions. More particularly, and as can best be seen in Figure 13, a web 36 will be partially cut as at 52 by the lower slitting disc periphery 40' at one location, and the remaining web will be cut as at 54 at a second location by the upper disc periphery 38'. This is advantageous from several respects. The resulting clean cut avoids or at least substantially minimizes any resulting jagged surface imperfections.
  • the slitting operation of the present invention does not rely on lateral separation of the product segments, three or more segments can be simultaneously slit by multiple pairs of slitting discs during a single slitting operation. One cut will not interfere with the next adjacent cut because none of the cuts requires lateral segment separation.
  • the eccentric sleeves 48 are preferably provided with toothed segments 56 which mesh with opposite hand pinion gears 58 carried on a common vertically disposed adjustment shaft 60. Rotation of shaft 60 will cause simultaneous rotation of the eccentric sleeves 48 in opposite directions, which in turn will adjust the positions of the support shafts 42 and their respective slitting discs 38 with respect to the pass line L. Such adjustments accommodate changes in the slitting disc diameters as they are periodically reground to compensate for wear.
  • the outboard pairs of slitting discs 38,40 are followed by separating discs 62 designed to deflect the severed outboard strands 28', 34' laterally outwardly to guide assemblies (not shown) which redirect the strands to parallel paths.
  • the center pair of slitting discs 38,40 is likewise followed by a separating disc 64 which laterally spreads the two separated center strands 30', 32' for redirection along parallel paths.
  • the support shafts 42 carry gears 66 which are separate from each other, each gear 66 being in meshed relationship with a gear 68 on a gear shaft 70.
  • the gear shafts 70 are parallel to the support shafts 42, and the gears 68 are intermeshed.
  • One gear shaft 70 is driven by an external drive (not shown). This arrangement drives the support shafts 42 and the slitting discs 38, 40 carried thereon in opposite directions indicated schematically by the arrows in Figure 13, thus serving to pull the product P through the slitting apparatus.
  • the number of pairs of slitting discs can be varied to accommodate a wide range of product configurations and resulting numbers of severed strands.
  • the manner in which the parting between the support shafts is adjusted can be changed, for example by shifting only one shaft while allowing the other to remain stationary. In some cases, it may be advantageous to have the slitting disc peripheries overlap a common reference line.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Nonmetal Cutting Devices (AREA)
  • Confectionery (AREA)
  • Shearing Machines (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
EP97309677A 1996-12-02 1997-12-02 Dispositif de coupe longitudinale pour laminoir Withdrawn EP0845307A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US75378496A 1996-12-02 1996-12-02
US753784 1996-12-02

Publications (1)

Publication Number Publication Date
EP0845307A1 true EP0845307A1 (fr) 1998-06-03

Family

ID=25032138

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97309677A Withdrawn EP0845307A1 (fr) 1996-12-02 1997-12-02 Dispositif de coupe longitudinale pour laminoir

Country Status (5)

Country Link
EP (1) EP0845307A1 (fr)
CN (1) CN1185360A (fr)
BR (1) BR9706065A (fr)
CA (1) CA2222306A1 (fr)
TW (1) TW338727B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112139240A (zh) * 2020-08-11 2020-12-29 柳州钢铁股份有限公司 缩小钢筋性能线差的生产方法
CN112139239A (zh) * 2020-08-11 2020-12-29 柳州钢铁股份有限公司 性能线差小的切分钢筋

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB326696A (en) * 1929-04-25 1930-03-20 Philip Robinson An improved method of and apparatus for rolling metals
US3336781A (en) * 1964-08-24 1967-08-22 Morgan Construction Co Rolling mill
FR1531186A (fr) * 1967-07-17 1968-06-28 Gni I Pi Metalurgicheskoi Prom Procédé et dispositif de découpage longitudinal de lingots
US3982455A (en) * 1975-03-25 1976-09-28 Co-Steel International Limited Device for slitting billets
EP0528154A1 (fr) * 1991-07-31 1993-02-24 DANIELI & C. OFFICINE MECCANICHE S.p.A. Procédé et dispositif pour la fabrication de profilés finis individuels à partir d'éléments de profilés multiples à froid

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB326696A (en) * 1929-04-25 1930-03-20 Philip Robinson An improved method of and apparatus for rolling metals
US3336781A (en) * 1964-08-24 1967-08-22 Morgan Construction Co Rolling mill
FR1531186A (fr) * 1967-07-17 1968-06-28 Gni I Pi Metalurgicheskoi Prom Procédé et dispositif de découpage longitudinal de lingots
US3982455A (en) * 1975-03-25 1976-09-28 Co-Steel International Limited Device for slitting billets
EP0528154A1 (fr) * 1991-07-31 1993-02-24 DANIELI & C. OFFICINE MECCANICHE S.p.A. Procédé et dispositif pour la fabrication de profilés finis individuels à partir d'éléments de profilés multiples à froid

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112139240A (zh) * 2020-08-11 2020-12-29 柳州钢铁股份有限公司 缩小钢筋性能线差的生产方法
CN112139239A (zh) * 2020-08-11 2020-12-29 柳州钢铁股份有限公司 性能线差小的切分钢筋

Also Published As

Publication number Publication date
MX9709417A (es) 1998-10-31
CA2222306A1 (fr) 1998-06-02
BR9706065A (pt) 1999-10-05
TW338727B (en) 1998-08-21
CN1185360A (zh) 1998-06-24

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