EP2475473A1 - Nivelliermaschine mit mehreren walzen - Google Patents

Nivelliermaschine mit mehreren walzen

Info

Publication number
EP2475473A1
EP2475473A1 EP09783580A EP09783580A EP2475473A1 EP 2475473 A1 EP2475473 A1 EP 2475473A1 EP 09783580 A EP09783580 A EP 09783580A EP 09783580 A EP09783580 A EP 09783580A EP 2475473 A1 EP2475473 A1 EP 2475473A1
Authority
EP
European Patent Office
Prior art keywords
leveling
cassette
vertical
machine according
fixed
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.)
Granted
Application number
EP09783580A
Other languages
English (en)
French (fr)
Other versions
EP2475473B1 (de
Inventor
Jean-Pierre Chazal
Bernard Dumas
Vincent Philippaux
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.)
Primetals Technologies France SAS
Original Assignee
Siemens VAI Metals Technologies SAS
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 Siemens VAI Metals Technologies SAS filed Critical Siemens VAI Metals Technologies SAS
Priority to EP09783580A priority Critical patent/EP2475473B1/de
Priority to PL09783580T priority patent/PL2475473T3/pl
Publication of EP2475473A1 publication Critical patent/EP2475473A1/de
Application granted granted Critical
Publication of EP2475473B1 publication Critical patent/EP2475473B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/10—Die sets; Pillar guides
    • B21D37/12—Particular guiding equipment, e.g. pliers; Special arrangements for interconnection or cooperation of dies

Definitions

  • the invention relates to a machine for flattening strips or thick metal plates which, subsequently, will be called generically "strips".
  • planing devices are used for the purpose of eliminating flatness defects of the strips after hot rolling or cold rolling. Indeed, for example after the hot rolling, cooling and conditioning phases, the rolled products may have non-developable flatness defects, such as defects called long or long center edges, or even developable flatness defects. , such as tile defects. These geometric defects visibly affect the rolled products.
  • multiple roll planers arranged to interlock are used to determine a corrugated path of the web which is thus subjected to bending effects in alternate directions.
  • a planing installation of a metal strip or plate generally comprises a lower leveling cassette and an upper leveling cassette, each equipped with a plurality of leveling rollers which are in direct contact with the strip. These leveling rollers are generally supported by support rollers.
  • These two leveling cassettes are included in the structure of the planer which comprises vertical beams secured in their lower part by a generally fixed bed base and, in the upper part, by horizontal upper beams.
  • the lower cassette is supported by the lower and the upper cassette by a pressure frame to which it is fixed by locks.
  • a motorized drive system operates the rollers in rotation and, by friction, to advance the belt at a determined speed. It comprises at least one motor driving at least one speed reducer which actuates at the required speed at least one gear box which distributes the rotational torques to the different upper and lower leveling rollers via connected extensions of a side to the outputs of the gearbox and, on the other side, to the end journals of the rollers.
  • FIG. 1 is a diagrammatic view of a leveling machine of the prior art in which the upper cassette 5a is carried by a pressure frame 4 that can be displaced vertically by means of hydraulic cylinders resting on horizontal top rails 3a, 3b solidaires of the vertical beams.
  • the machine is composed of a fixed lower bed base 1 supporting a lower leveling cassette 5b and integral with two pairs of vertical beams 2a, 2b.
  • the upper part of each beam 2a, 2b is connected to a horizontal cross member 3a, 3b.
  • a pressure frame 4 guided in vertical translation between the beams 2 is forced on the upper cassette 5a by means of four clamping cylinders 6.
  • Each cassette 5a, 5b comprises a plurality of leveling rollers 51a, 51b supported by bearings 52a, 52b and supported by support rollers 53a, 53b themselves carried by bearings 54a, 54b.
  • the leveling machine further comprises return cylinders 8 for moving the pressure frame 4 and thus the upper cassette 5a upwards.
  • the leveling machine shown in Figure 1 is provided with correction cylinders 7 interposed between the pressure frame 4 and the upper leveling cassette 5a.
  • Fastening devices 9 ensure the attachment of the upper cassette of planing 5a on the pressure frame while allowing the displacements of the upper leveling cassette 5a caused by the correction cylinders 7.
  • EP 0 570 770 proposes the use of jacks arranged between the upper leveling rollers and the upper pressure frame of a leveling machine. These jacks allow the compensation of the bending of the leveling rollers occurring during the passage of the web of material between the rollers. These compensation cylinders act in concert with cylinders for moving an upper frame whose upper leveling cassette is secured.
  • the leveling machine is also equipped with a plurality of sensors measuring the deformation of the rollers and providing information to a computer which controls the compensation cylinders and the jacks for moving the frame.
  • JP A 2000 326012 also discloses a leveling machine having a plurality of compensation jacks installed between an upper frame and upper rolls of a leveling machine. Other cylinders supported on horizontal sleepers modify the position of the upper leveling rollers by acting on the upper bed of the leveling machine.
  • US 5,461,895 discloses a leveling machine which to compensate for the longitudinal bending of the leveling rollers comprises a combination of pressure cylinders acting in the middle of the upper cassette and traction cylinders acting at its ends.
  • leveling machines comprise a stack of superimposed layers formed of an upper cassette, bending correction cylinders, the pressure frame, main clamping cylinders, horizontal top rails.
  • a thick striping machine of great width can reach a mass of more than six hundred tons for a height greater than ten meters.
  • a pressure frame alone may have a mass of more than seventy tonnes. It is therefore important to minimize the weight and bulk of the planing machines.
  • the present invention aims to solve the problems mentioned above and aims in particular to limit the stack of structural members and cylinders to limit the height of the machine and, in particular, the length of the vertical beams. It also aims to provide a leveling machine having a limited volume and mass in comparison with known leveling machines while performing the same functions and in particular by allowing compensation of the bending of planing cassettes caused by the advancement of the material. to hover.
  • the invention has for its first object according to a planing machine a strip of material comprising:
  • a fixed lower bed base from which a plurality of vertical beams extend, the beams being located on either side of a longitudinal axis of travel of the strip of material, a top leveling cassette and a bottom cassette; fixed leveling, during the operation of the leveling machine, the lower fixed leveling cassette being supported on the fixed bed, each cassette having a plurality of spaced rollers and rotatably mounted in bearings of axes perpendicular to the longitudinal axis of scrolling material,
  • the mobile hooking means comprise:
  • each cylinder of the first assembly being fixed at one end to a flange of the fixed upper beam and on the other hand to a retaining hook of the upper leveling cassette
  • each cylinder of the second set being fixed firstly to a movable part relative to the fixed upper beam and secondly to a retaining hook (56b ) of the upper leveling cassette,
  • Each movable part is fixed to a flange of the fixed upper bed and at least one of the moving parts is rotated by a drive means
  • the rotational drive means comprises at least one jack, each jack being connected on the one hand to at least one moving part and, on the other hand, to a flange of the upper bed of the leveling machine,
  • the lower leveling cassette has a plurality of uprights extending upwardly from the base of the leveling cassette.
  • Each vertical beam has an internal vertical contact surface intended to cooperate with another contact surface for translational guidance of at least one leveling cassette of the leveling machine
  • the lower leveling cassette comprises at least one external vertical contact surface intended to cooperate with an inner vertical contact surface of a vertical beam so as to guide in translation the bottom leveling cassette
  • At least one inner vertical contact surface of the lower leveling cassette belongs to an amount of the lower leveling cassette extending upwards from the base of the leveling cassette
  • the lower leveling cassette has an inner contact surface intended to guide the upper leveling cassette in translation
  • the upper leveling cassette comprises, for its translational guidance, at least one outer contact surface intended to cooperate with another contact surface of an element of the leveling machine,
  • Each outer surface of contact the upper leveling cassette is curved
  • Each outer contact surface of the upper leveling cassette cooperates with an inner vertical contact surface of a beam
  • Each outer contact surface of the upper leveling cassette cooperates with an inner vertical contact surface of the lower leveling cassette
  • Means of displacement in vertical translation of the upper leveling cassette comprise a plurality of clamping jacks (10) integral with the fixed upper bed and the upper leveling cassette.
  • the invention also relates to a flexible planing cassette having a thickness varying between a maximum value and a minimum value and intended to cooperate with a leveling machine as defined above.
  • the leveling cassette comprises a plurality of zones of maximum thickness intended to cooperate with clamping jacks of the leveling machine, the areas of maximum thickness being separated from each other by a zone of minimum thickness.
  • the value of the maximum thickness can be between 1, 5 and 4 times the value of the minimum thickness and can preferably be between 2 and 2.5 cmSv.
  • the leveling machine according to the invention therefore has a total height limited compared to known machines, in addition unlike the planing machines of the state of the art it has no conventional pressure frame or horizontal crosspieces, which allows the economy of tens of tons of structure and therefore a lightening of the leveling machine according to the invention.
  • the invention also allows the removal of lifting cylinders of the pressure frame and the upper cassette, a gain that is not negligible because these cylinders, generally in number of four, must be strong enough to lift a mass of up to one hundred tons.
  • their stroke is generally important to allow the disassembly of the clamping jacks.
  • These are very heavy cylinders that require the installation of high pressure hydraulic circuits and a large amount of oil. The removal of all these devices has the additional effect of lightening the mass of the planing machine several tens of additional tons.
  • FIG. 2 is a diagrammatic front view of a leveling machine according to the invention
  • FIG. 3 is a detail view showing a planing cassette connected to the upper bed of a leveling machine according to the invention
  • FIG. 4 is a sectional view of FIG. 1,
  • FIG. 5 is a sectional view of a flexible upper leveling cassette used in a planing machine according to the invention. It should be noted that in the figures only the elements necessary for the understanding of the invention have been shown in the figures, it being understood that the leveling machine comprises all the elements (not shown) necessary for driving the rolls of planing.
  • the leveling machine according to the invention shown in Figure 2 comprises a lower bed base 1 fixed during use of the leveling machine, supporting a lower leveling cassette 5b.
  • Two pairs of vertical beams 2a, 2b extend upwards from the lower bed base 1 while being fixed rigidly thereto.
  • each pair of vertical beams 2a, 2b is situated on one side of a vertical imaginary plane passing through the longitudinal axis of movement P (visible in FIG. 4) of the strip of material.
  • An upper bed base 1 1 fixed is rigidly secured to the upper end of each of the vertical beams 2a, 2b.
  • the leveling machine further comprises clamping cylinders 10 fixed on the one hand to the fixed upper base bed 1 1 and in contact on the other hand with an upper face of the top leveling cassette 5a.
  • the clamping jacks 10 By unfolding, the clamping jacks 10 are supported on the bed frame 1 1 and force the rollers 51a of the top leveling cassette 5a against the material to be hovered.
  • the clamping cylinders therefore ensure, on the one hand, that the rollers 51a of the upper leveling cassette are brought closer to the rollers 51b of the lower leveling cassette 5b and, on the other hand, as a function of their relative vertical displacement, compensate the bending of the upper leveling cassette 5a caused by the separation force due to the passage of the tape to be hovered.
  • Fastening means 9 secure the upper leveling cassette 5a to the bed base 1 1 while allowing the vertical displacements of the upper leveling cassette 5a caused by the clamping jacks 10.
  • FIG. 3 shows an embodiment of the attachment means.
  • the upper leveling cassette 5a carrying the leveling rollers 51a and their bearings 52a is hooked to the upper bed base 1 1 by means of two cylinders January 1 supported on the drive side of the rollers, by flanges 1 13 of the upper bed 11.
  • Each cylinder head 111 is engaged in a retaining hook 56a of the upper leveling cassette 5a.
  • each cylinder head 111 may comprise a cylindrical retaining portion 111b with an axis perpendicular to the axis of the rod 111a of the cylinder 111.
  • the upper leveling cassette 5a is also attached to the upper beam 11 via two other cylinders 112 supported on the opposite side to the driving of the rollers, by L-shaped parts 114 rotatable relative to the fixed upper base plate 11.
  • Each cylinder head 112 is engaged in a retaining hook 56b of the upper leveling cassette 5a.
  • each cylinder head 112 may comprise a cylindrical retaining portion 112b with an axis perpendicular to the axis of the rod 112a of the cylinder 112.
  • each cylindrical retaining portion 111b, 112b may comprise two vertical stops located on either side of each retaining hook 56a and intended to block the upper leveling cassette 5a in horizontal translation.
  • the jacks 111, 112 thus support the upper leveling cassette 5a while accompanying the relative displacements between the upper leveling cassette 5a and the upper beam 11 under the action of the jacks 10.
  • Each movable piece 114 is fixed to an axis of the bed base 11 and can rotate about this axis, each axis being carried by a flange 1100 of the bed base 11.
  • At least one additional jack 115 capable of pivoting at least one moving part 114 s' extends between one end of the moving part 114 and another flange 1200 of the bed base 11.
  • the rods of the clamping cylinders 10 extend until the upper leveling cassette 5a rests on the lower leveling cassette 5b.
  • the rods 111a and 112a of the holding cylinders 111, 112 follow the movement of the upper leveling cassette 5a downwards.
  • the rods 111a and 112a of the holding cylinders 111, 112 continue their downward stroke until the release of each retaining hook 56a.
  • the pressure frame is guided between the vertical beams and the upper leveling cassette is attached to it by means of devices capable of tracking the movements of the cylinders. bending correction.
  • the upper cassette is not guided between the vertical beams or between amounts of the lower cassette .
  • the absence of a pressure frame allows the guide of the cassette itself between the vertical beams or between amounts of the lower cassette, which greatly improves the accuracy of its movements.
  • Figure 4 shows an embodiment of the guide system of the planing crews between the beams 2a and 2b. Note that Figure 4 is a schematic sectional view of the leveling machine made at the bearings 52a and 52b, in a plane parallel to an imaginary vertical plane passing through the longitudinal axis of travel of the web of material.
  • each beam 2a, 2b has an internal vertical contact surface 21a intended to cooperate with another contact surface for translational guidance of at least one leveling cassette 5a, 5b of the leveling machine.
  • the lower leveling cassette 5b comprises, for its guidance out of the leveling machine during assembly and disassembly operations, the vertical uprights 55b extending upwards from the base of the lower cassette 5b.
  • Each upright 55b has an outer vertical surface 59 coming into contact with an inner vertical surface 21a of one of the beams 2a, 2b so as to ensure precise positioning and to guide in translation the bottom leveling cassette 5b.
  • the amounts 55b and the lower leveling cassette 5b are thus linked by a slide connection.
  • the two contact surfaces 59 and 21a extend at least partially opposite one another.
  • each amount 55b of the lower leveling cassette 5b is positioned so as to serve as a guide in translation to the upper cassette of planing 5a.
  • each amount of the lower leveling cassette 5b also has an inner vertical surface 57b contacting an outer surface 55a of the upper leveling cassette.
  • the contact surfaces 55a and 57b extending at least partially facing each other when the leveling machine is fully assembled, cooperate to guide in translation the top leveling cassette 5a relative to the cassette lower leveling 5b. Due to the frame of the upper leveling cassette 5a by the uprights 55b, the lower and upper leveling cassettes are thus linked by a slide connection which ensures their relative positioning with great accuracy.
  • each outer contact surface 55a of the upper leveling cassette may be slightly curved.
  • each of the uprights 55b of the lower leveling cassette 5b has at its upper end a positioning pin 58b for receiving a support 57a of the upper leveling cassette 5a.
  • each positioning pad 58b receives a support a support 57a which ensures the joining of the two cassettes.
  • the lower leveling cassette 5b does not include uprights 55b and the upper leveling cassette is directly guided in vertical translation by the beams 2a, 2b of the leveling machine.
  • each outer contact surface 55a of the upper leveling cassette 5a cooperates with an inner vertical contact surface 21a of one of the beams 2a, 2b.
  • the lower leveling cassette 5a is therefore connected to the uprights 2a, 2b of the leveling machine by a sliding connection.
  • the contact surfaces 21a, 56b, 57b and 55a may be coated with a sliding wear material. parts relative to each other as hardened steel plates superficially.
  • the clamping cylinders 10 can play their role correctly in correcting the bending of the leveling rollers, they have the advantage of being at least six to act between the upper frame 1 1 and the upper cassette 5a.
  • the clamping cylinders 10 are arranged in line in the direction of the longitudinal axis of the rollers.
  • the leveling machine comprises two lines of three clamping cylinders 10 each.
  • a first line of three clamping jacks 10 acts on the side of the tape entrance in the upper leveling cassette 5a while another line of clamping jacks acts on the output side of the leveling cassette, as schematized in Figure 4.
  • An additional condition for the smooth operation of the roll bending correction is the deformation capacity of the upper leveling cassette in the direction of the longitudinal axis of the rollers. This condition is fulfilled without difficulty for the planing of the thick strips which causes very great efforts of separation of the upper and lower cassettes. In the case of thinner strips, it may be necessary to adjust the shape of the upper leveling cassette to reduce its inertia to bending.
  • FIG. 5 gives an example of an upper leveling cassette having an increased flexural deformation capacity compared to the upper leveling cassettes of the prior art. It can also be said that the lower leveling cassette 5a shown in FIG. 5 has a reduced deformation inertia with respect to the upper leveling cassettes of the prior art.
  • the thickness e of the upper leveling cassette 5a varies between a maximum value e1 and a minimum value e2.
  • Each bearing surface of the clamping jacks 10 is located in a zone z1 where the thickness e of the upper leveling cassette 5a is maximum so as to ensure maximum resistance of the upper leveling cassette 5a to the clamping forces and Bending correction transmitted by the clamping jacks 10.
  • the length / of each zone of maximum thickness z1 is at least equal to the diameter of the end 10a of the jack 10 with which it is in contact.
  • zones z2 of minimum thickness e2 inserted between zones z1 of thickness maximum allow to reduce the inertia to the deformation of the upper casette 5a and thus to obtain a fast and effective bending correction.
  • These zones z2 have a length less than the length / ⁇ In the embodiment of FIG.
  • the maximum thickness can be between 1, 5 and 4 times the value of the minimum thickness and preferably can have a value between 2 and 2.5 faithSv

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
  • Machine Tool Units (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)
EP09783580A 2009-09-09 2009-09-30 Nivelliermaschine mit mehreren walzen Active EP2475473B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP09783580A EP2475473B1 (de) 2009-09-09 2009-09-30 Nivelliermaschine mit mehreren walzen
PL09783580T PL2475473T3 (pl) 2009-09-09 2009-09-30 Prostownica z wieloma walcami

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP09290685 2009-09-09
PCT/EP2009/062659 WO2011029485A1 (fr) 2009-09-09 2009-09-30 Machine de planage a rouleaux multiples
EP09783580A EP2475473B1 (de) 2009-09-09 2009-09-30 Nivelliermaschine mit mehreren walzen

Publications (2)

Publication Number Publication Date
EP2475473A1 true EP2475473A1 (de) 2012-07-18
EP2475473B1 EP2475473B1 (de) 2012-12-26

Family

ID=42134880

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09783580A Active EP2475473B1 (de) 2009-09-09 2009-09-30 Nivelliermaschine mit mehreren walzen

Country Status (12)

Country Link
US (1) US9126250B2 (de)
EP (1) EP2475473B1 (de)
JP (1) JP2013503752A (de)
KR (1) KR101606237B1 (de)
CN (1) CN102481611B (de)
BR (1) BR112012005193B1 (de)
ES (1) ES2401979T3 (de)
IN (1) IN2012DN02039A (de)
PL (1) PL2475473T3 (de)
RU (1) RU2518828C2 (de)
SM (1) SMT201300037B (de)
WO (1) WO2011029485A1 (de)

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CN105170722A (zh) * 2015-10-08 2015-12-23 扬中中科维康智能科技有限公司 一种大型折弯机载荷时上下模的挠性补偿方法
CN108453193A (zh) * 2018-02-08 2018-08-28 嘉善翱鹰五金制品厂 一种用于合页生产的固定装置
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US9126250B2 (en) 2015-09-08
CN102481611A (zh) 2012-05-30
WO2011029485A1 (fr) 2011-03-17
US20120174644A1 (en) 2012-07-12
KR101606237B1 (ko) 2016-03-24
BR112012005193A2 (pt) 2016-03-08
RU2012113625A (ru) 2013-10-20
PL2475473T3 (pl) 2013-05-31
ES2401979T3 (es) 2013-04-25
RU2518828C2 (ru) 2014-06-10
IN2012DN02039A (de) 2015-08-21
JP2013503752A (ja) 2013-02-04
KR20120060884A (ko) 2012-06-12
CN102481611B (zh) 2015-10-21
BR112012005193B1 (pt) 2019-10-22
EP2475473B1 (de) 2012-12-26

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