EP3930939B1 - Krümmungskorrekturanordnung für längliche metallische elemente - Google Patents

Krümmungskorrekturanordnung für längliche metallische elemente Download PDF

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Publication number
EP3930939B1
EP3930939B1 EP20714705.9A EP20714705A EP3930939B1 EP 3930939 B1 EP3930939 B1 EP 3930939B1 EP 20714705 A EP20714705 A EP 20714705A EP 3930939 B1 EP3930939 B1 EP 3930939B1
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EP
European Patent Office
Prior art keywords
correction
wheel
assembly
correction wheel
straightening
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Application number
EP20714705.9A
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English (en)
French (fr)
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EP3930939A1 (de
Inventor
Simone Rupoli
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Schnell SpA
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Schnell SpA
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F1/00—Bending wire other than coiling; Straightening wire
    • B21F1/02—Straightening
    • 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
    • B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
    • B21D3/02—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers
    • B21D3/05—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers arranged on axes rectangular to the path of the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F1/00—Bending wire other than coiling; Straightening wire
    • B21F1/02—Straightening
    • B21F1/026—Straightening and cutting

Definitions

  • the present invention relates to an assembly for correcting the curvature of elongated metal elements, in particular metal profiles and rods, and similar products.
  • Apparatuses for processing elongated metal elements, in particular metal sections and similar products, which include straightening units are known.
  • these units are used to straighten rods wrapped in rolls which, once unrolled and straightened, may still have a slight residual curvature, more or less accentuated, unsuitable for subsequent processing or for direct use on site.
  • These slight straightening imperfections are corrected in the final part of the straightening unit by means of special corrector members configured to make the necessary corrections.
  • the aforementioned apparatuses may comprise, for example, straightening units made by means of a plurality of pairs of counter-rotating wheels, staggered along a feeding direction, through which the rod is fed, so that it is subjected to cyclical yielding actions by bending, aimed at eliminating at least most of the curvature.
  • US patent 1,239,175 illustrates, for example, an apparatus for straightening metal wires, comprising a first set of counter-rotating wheels and a second set of counter-rotating wheels, arranged on mutually orthogonal planes.
  • the patent EP 1259336 illustrates a straightening apparatus comprising a set of wheels opposite to a feeding line of material, wherein a wheel is axially movable, to correct any internal stress.
  • Patent application JP H07148537 illustrates a bending apparatus which provides for grouping the wheels in pairs on each side of the feeding line.
  • Application EP 0446648 illustrates a rod straightening apparatus that combines two straightening assemblies.
  • Patent CN 107716788 discloses a guiding device for an apparatus for straightening rods.
  • the correcting devices of the known type in addition to having a limited correction capacity on the plane orthogonal to the lying plane of the straightening wheels, can influence in an uncontrolled and undesired way the straightening on the same plane as the wheels.
  • the present invention aims at solving the mentioned problems by devising an assembly for correcting the curvature of metal elements having elongated shape, which enables these elements to be effectively straightened.
  • the present invention furthermore aims at providing an assembly for correcting the curvature of elongated metal elements, of simple construction and functional conception, provided with safe and reliable use, as well as with a relatively economic cost.
  • a straightening correction assembly comprising a first wheel and a second wheel, opposite each other to the aforementioned feeding line of the metal element, having respectively a first rotation axis and a second rotation axis lying on the same plane orthogonal to the aforesaid feeding line.
  • the aforementioned first and second wheels may be moved, for example jointly or synchronously in the direction of their own axis of rotation, thanks to a respective drive assembly, so as to correct the straightening of the metal element on a corresponding plane, for example, on a plane containing the feeding line, orthogonal to the plane of lying of the wheels of straightening members arranged upstream of the correction assembly.
  • the aforementioned first wheel and/or the second wheel form a conjugated perimeter profile.
  • the aforementioned perimeter profile is shaped by a groove for housing the metal element, preferably having V shape, to facilitate containment and, therefore, the corrective action on the metal element during feeding.
  • the first wheel and the second wheel are movable by a relative tightening motion along a direction perpendicular to the feeding line, alternately between a release condition, in which the wheels are moved away from each other and do not interfere with the metal element, and a tightening condition, in which the aforementioned wheels are brought together so as to tighten the element itself to make the necessary correction.
  • first wheel and the second wheel may be further movable by a further correction motion, jointly or synchronously, to carry out the correction on a further correction plane.
  • this further correction motion may be operated in a direction perpendicular to the feeding line in the plane containing the first rotation axis and the second rotation axis, so as to enable the correction of the straightening of the metal element also in this direction.
  • the first wheel and the second wheel may have the same diameter or different diameter, so as to guarantee different winding arcs, depending on the correction configuration.
  • the reference numeral 1 indicates as a whole an apparatus for processing elongated metal elements 2, in particular profiles and metal rods, comprising a correction assembly 10.
  • the apparatus 1 comprises a straightening assembly 3 arranged along a feeding line A for at least one metal element 2.
  • the straightening assembly 3 preferably comprises, in a known way, a plurality of wheels opposite each other to the feeding line A and staggered along the same feeding line A.
  • the straightening assembly 3 comprises three support wheels 30 arranged on the same side of the supply line A and two pressure wheels 31 arranged on the opposite side, in a staggered manner, so as to define between them a passage for the element 2 to be straightened.
  • the support wheels 30 and the pressure wheels 31 are arranged so as to impress on the element 2 advancing along the feeding line A a series of more or less wide curves and counter-curves in relation to the position of the wheels, so as to straighten it.
  • the straightening assembly 3 may usefully comprise motor members 32 configured to move the straightening members, for example the pressure wheels 31, in a transverse direction B to the feeding line A, for example perpendicular to the feeding line A and, in particular, perpendicular to the rotation axis of the wheels. Moving along the transverse direction B enables the sinuous path along which the metal element 2 is fed along the feeding line A through the straightening group 3 to be adjusted.
  • motor members 32 configured to move the straightening members, for example the pressure wheels 31, in a transverse direction B to the feeding line A, for example perpendicular to the feeding line A and, in particular, perpendicular to the rotation axis of the wheels. Moving along the transverse direction B enables the sinuous path along which the metal element 2 is fed along the feeding line A through the straightening group 3 to be adjusted.
  • the correction assembly 10 is placed downstream of the straightening assembly 3. In the described case there is an auxiliary correction assembly 4. In this case the correction assembly 10 may be preferably arranged upstream of the auxiliary straightening assembly 4.
  • the apparatus also comprises a drawing assembly arranged separately along the feeding line A or integrated in some of the straightening and/or correction members.
  • the correction assembly 10 comprises at least a first correction wheel 11 and a second correction wheel 12, opposite to the feeding line A.
  • the first correction wheel 11 and the second correction wheel 12 are respectively rotatable with respect to a first rotation axis R1 and a second rotation axis R2, lying on the same plane orthogonal to the aforesaid feeding line A.
  • the first correction wheel 11 and the second correction wheel 12 are movable according to a correction motion along an axial correction direction C, along their rotation axis R1, R2, so as to correct any internal stresses of the metal element 2 which are carried out on a plane orthogonal to the lying plane of said wheels.
  • the first correction wheel 11 and the second correction wheel 12 are movable according to a relative tightening motion along a tightening direction D perpendicular to the feeding line A, alternately between a release condition, wherein the first correction wheel 11 and the second correction wheel 12 are moved away from each other and do not interfere with the metal element 2, and a tightening condition, wherein the first correction wheel 11 and the second correction wheel 12 are brought together so as to clamp the element 2 to make the necessary correction.
  • the first correction wheel 11 may be operated according to the aforementioned tightening motion and the second correction wheel 12 may be fixed relative to this motion, or both the aforementioned wheels may be movable according the aforementioned motion.
  • the element 2 is securely engaged between the first correction wheel 11 and the second correction wheel 12, also in the case of stresses made during the correction step, as described in more detail in the following.
  • the correction assembly 10 comprises at least one deflection wheel 13 arranged upstream and/or downstream of the first correction wheel 11 and of the second correction wheel 12, for example on one side of the feeding line A, so as to facilitate the adhesion of the metal element 2 on a corresponding adjacent correction wheel of the correction assembly 10.
  • the greater adhesion of the metal element 2 has the increasing effect on the effectiveness of the correction assembly 10 (see Figure 1 ).
  • the first correction wheel 11 and the second correction wheel 12 preferably have a conjugated perimeter profile (see Figure 2 ).
  • first correction wheel 11 and the second correction wheel 12 preferably have a perimeter profile formed by a perimeter groove 14 conjugated to a conjugate projection 15. This configuration further facilitates the adhesion of the metal element 2 to the bottom of the perimeter groove 14 of the first correction wheel 11 and facilitates the correction of the internal stresses by increasing the capacity of the wheels 11, 12 to hold the metal element 2.
  • the perimeter groove 14 is V shaped, so as to shape respective effective containment and centering walls for the metal element 2, while the projection 15 is made in a conjugated way.
  • the correction assembly 10 may comprise an actuator member 16, for example a linear actuator, for controlling the relative tightening motion, described above (see Figure 1 ), for example by acting on the second correction wheel 12.
  • an actuator member 16 for example a linear actuator, for controlling the relative tightening motion, described above (see Figure 1 ), for example by acting on the second correction wheel 12.
  • the apparatus may usefully comprise the auxiliary correction assembly 4, arranged downstream of the correction assembly 10.
  • the auxiliary correction assembly 4 may in turn comprise a pair of auxiliary deflection wheels 40 and an auxiliary correction wheel 41 opposite to the feeding line A, arranged between the pair of auxiliary deflection wheels 40, so as to counter-calender the advancing metal element 2, thus eliminating any residual curvature.
  • the auxiliary correction wheel 41 is operated by a motor member 42, according to a correction motion along the auxiliary correction direction B', transversal, in particular perpendicular, to the feeding line A and on the plane of the auxiliary correction wheels 40, 41 so as to correct any residual curvatures on the corresponding floor.
  • Said at least one metal element 2 is fed along the feeding line A through the straightening assembly 3 and subsequently through the correction assembly 10.
  • the aforementioned correction motion is controlled, for example by means of a special drive assembly, in correction direction C, therefore the rotation axis of each of the correction wheels 11, 12, so as to eliminate or reduce the aforementioned stresses.
  • the first correction wheel 110 and the second correction wheel 120 of the correction assembly 100 may be movable according to a further correction motion, either integrally or synchronously.
  • the further aforementioned correction motion enables the aforementioned wheels to be moved along a further correction direction E, perpendicular to the feeding line A and lying on the plane of the first correction wheel 110 and of the second correction wheel 120.
  • This additional correction motion enables the correction of internal stresses present in the metal element 2 which arise, in particular, also on the lying plane of the wheels 110, 120.
  • the aforesaid additional correction motion may be operated for example by means of a further linear actuator 160, for example associated with the linear actuator 16 suitable for controlling the aforementioned tightening motion along the tightening direction D.
  • Figure 3 shows the first correction wheel 110 and the second correction wheel 120 in the release condition, mutually moved away, by the linear actuator 16.
  • the first wheel 110 and the second wheel 120 are operated in the aforementioned tightening motion with the cooperation of an elastic contrasting member 17, for example made by a spring, up to the tightening condition (see Figure 4 ).
  • first wheel 110 and the second wheel 120 are carried by a frame 18.
  • first wheel 110 may be secured to the frame 17 at a guide slot, so as to allow the relative tightening motion, operated by the actuator member 16.
  • the further actuator member 160 is instead associated with the frame 17, so as to integrally move the first wheel 110 and the second wheel 120 according to the further correction motion in the further correction direction E.
  • the first correction wheel 110 and the second correction wheel 120 are movable according to the correction motion along the correction direction C, along the respective rotation axes R1, R2, to correct any curvatures of the element 2 on the corresponding plane.
  • the correction assembly 100 may also comprise further deviation wheels 131 arranged upstream and respectively downstream of the correction wheels 110, 120, opposite to the deflection wheels 130 with respect to the feeding line A, to hold suitably the element 2 in the action of further correction.
  • Figure 6 illustrates an operative step of insertion of the element 2 into the feeding line A, in Figure 7 a straightening step and in Figure 8 a correction step by the correction assembly 100.
  • correction assembly 10, 100 described by way of example may be modified according to the different needs, without departing from the scope of the appended claims.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)
  • Secondary Cells (AREA)
  • Physical Vapour Deposition (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)

Claims (10)

  1. Krümmungskorrekturanordnung für längliche Metallelemente, insbesondere Metallprofile und -stangen, umfassend ein erstes Korrekturrad (11, 110) und ein zweites Korrekturrad (12, 120) gegenüber einer Zuführlinie (A) eines Metallelements (2), jeweils drehbar um eine erste Drehachse (R1) und eine zweite Drehachse (R2),
    und eine Antriebsanordnung, die konfiguriert ist, sodass sie im Betrieb das erste Korrekturrad (11, 110) und das zweite Korrekturrad (12, 120) gemäß einer Korrekturbewegung in einer Korrekturrichtung (C) jeweils entlang der ersten Drehachse (R1) und der zweiten Drehachse (R2) antreibt und somit die Krümmung des Metallelements (2) auf einer entsprechenden Ebene orthogonal zu der liegenden Ebene des ersten Korrekturrads (11, 110) und des zweiten Korrekturrads (12, 120) korrigiert, wobei das erste Korrekturrad (11, 110) und das zweite Korrekturrad (12, 120) gemäß einer relativen Anzugsbewegung abwechselnd zwischen einem Freigabezustand, wobei das erste Korrekturrad (11, 110) und das zweite Korrekturrad (12, 120) wegbewegt sind, um von dem Element (2) getrennt zu sein, und einem Anzugszustand, der zum Anziehen des Elements (2) gegenseitig zusammengezogen wird, bewegbar sind,
    wobei die Krümmungskorrekturanordnung dadurch gekennzeichnet ist, dass das erste Korrekturrad (11, 110) und das zweite Korrekturrad (12, 120) jeweils um die erste Drehachse (R1) und die zweite Drehachse (R2) drehbar sind, die auf einer gleichen Ebene orthogonal zu der Zufuhrlinie (A) liegen.
  2. Korrekturanordnung nach Anspruch 1, dadurch gekennzeichnet, dass das erste Korrekturrad (11, 110) und das zweite Korrekturrad (12, 120) ein konjugiertes Umfangsprofil (14, 15) für das Gehäuse des Metallelements (2) formen.
  3. Korrekturanordnung nach Anspruch 2, dadurch gekennzeichnet, dass das erste Korrekturrad (11, 110) ein Umfangsprofil aufweist, das durch eine Umfangsnut (14) geformt ist, und dass das zweite Korrekturrad (12, 120) ein Umfangsprofil aufweist, das mittels eines Vorsprungs (15) gefertigt wird, der mit der Umfangsnut (14) zusammenpasst, um das Element (2) während der Korrekturbewegung fest zu halten.
  4. Korrekturanordnung nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Umfangsnut (14) V-förmig ist.
  5. Korrekturanordnung nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass das erste Korrekturrad (11, 110) und das zweite Korrekturrad (12, 120) den gleichen Durchmesser aufweisen.
  6. Korrektureinheit nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das erste Korrekturrad (11, 110) und das zweite Korrekturrad (12, 120) unterschiedliche Durchmesser aufweisen.
  7. Korrekturanordnung nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass das erste Korrekturrad (110) und das zweite Korrekturrad (120) in einer weiteren Korrekturbewegung entlang einer weiteren Korrekturrichtung (E) bewegbar sind, die senkrecht zu der Zufuhrlinie (A) ist und in der Ebene des ersten Korrekturrads (110) und des zweiten Korrekturrads (120) liegt, um innere Spannungen zu korrigieren, die in dem Metallelement (2) vorhanden sind, die auch in der liegenden Ebene der Räder (110, 120) auftreten.
  8. Korrekturanordnung nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass sie mindestens ein Umlenkrad (13, 130, 131) umfasst, das stromaufwärts und/oder stromabwärts von dem ersten Korrekturrad (11, 110) und dem zweiten Korrekturrad (12, 120) auf einer Seite der Zufuhrlinie (A) angeordnet ist, um nach einer Korrekturbewegung des ersten Korrekturrads (11, 110) und des zweiten Korrekturrads (12, 120) die Haftung des Metallelements (2) an einem entsprechenden benachbarten Korrekturrad der Korrekturanordnung (10, 100) zu ermöglichen.
  9. Richtvorrichtung für längliche Metallelemente, umfassend eine Richtanordnung (3) und eine Korrekturanordnung (10) des Richtens nach einem der vorherigen Ansprüche, angeordnet stromabwärts von der Richtanordnung (3).
  10. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, dass sie eine Hilfskorrekturanordnung (4) umfasst, umfassend Hilfskorrekturräder (40, 41), die stromabwärts von der Korrekturanordnung (10) entlang der Zufuhrrichtung (A) angeordnet sind, wobei die Hilfskorrekturanordnung (4) konfiguriert ist, um Krümmungen eines metallischen Elements (2) entlang einer Hilfskorrekturrichtung (B') quer zu der Zufuhrlinie (A) in der Ebene der Hilfskorrekturräder (40, 41) zu korrigieren.
EP20714705.9A 2019-02-25 2020-02-25 Krümmungskorrekturanordnung für längliche metallische elemente Active EP3930939B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102019000002713A IT201900002713A1 (it) 2019-02-25 2019-02-25 Gruppo di correzione della curvatura di elementi metallici di foggia allungata
PCT/IT2020/050038 WO2020174506A1 (en) 2019-02-25 2020-02-25 Curvature correction assembly for elongated metallic elements

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Publication Number Publication Date
EP3930939A1 EP3930939A1 (de) 2022-01-05
EP3930939B1 true EP3930939B1 (de) 2023-11-22

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IT (1) IT201900002713A1 (de)
WO (1) WO2020174506A1 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114057013A (zh) * 2021-11-10 2022-02-18 安徽明诚电力设备安装有限公司 一种用于开关柜的放线装置
CN114192698A (zh) * 2021-12-13 2022-03-18 广西电网有限责任公司桂林阳朔供电局 一种导地线修复矫正器

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1239175A (en) 1916-09-18 1917-09-04 Albert P Gilbert Wire-straightening machine.
IT1239667B (it) * 1990-03-15 1993-11-11 Mep Macchine Elettroniche Piegatrici Gruppo combinato di raddrizzatura e linearizzazione profilati
JP2677957B2 (ja) * 1993-11-26 1997-11-17 東陽建設工機株式会社 鉄筋曲げ機
DE60118154T2 (de) 2000-02-03 2006-12-21 Stema Engineering A/S Verfahren und vorrichtung zum reduzieren von internen spannungen in armierungseisen oder ähnlichem
IT1401411B1 (it) * 2010-08-04 2013-07-26 Schnell Spa Metodo e apparecchiatura per la correzione delle sollecitazioni di torsione in tondini metallici.
CN107716788A (zh) * 2017-12-07 2018-02-23 张光伟 钢筋调直机防扭转导向装置

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IT201900002713A1 (it) 2020-08-25
WO2020174506A1 (en) 2020-09-03

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