WO2019012569A1 - Procédé destiné à la correction par redressage automatique d'éléments métalliques allongés et appareil de redressage destiné auxdits éléments - Google Patents

Procédé destiné à la correction par redressage automatique d'éléments métalliques allongés et appareil de redressage destiné auxdits éléments Download PDF

Info

Publication number
WO2019012569A1
WO2019012569A1 PCT/IT2018/050130 IT2018050130W WO2019012569A1 WO 2019012569 A1 WO2019012569 A1 WO 2019012569A1 IT 2018050130 W IT2018050130 W IT 2018050130W WO 2019012569 A1 WO2019012569 A1 WO 2019012569A1
Authority
WO
WIPO (PCT)
Prior art keywords
supply line
straightening
detection
along
detecting
Prior art date
Application number
PCT/IT2018/050130
Other languages
English (en)
Inventor
Fabio BALDONI
Original Assignee
Schnell S.P.A.
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 Schnell S.P.A. filed Critical Schnell S.P.A.
Priority to EP18749883.7A priority Critical patent/EP3651918B1/fr
Publication of WO2019012569A1 publication Critical patent/WO2019012569A1/fr

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
    • 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
    • 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
    • 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 a method for automatic straightening correction of elongated metal elements, in particular metal profiles and rods and similar products, as well as a straightening apparatus for said elements.
  • Apparatuses for elongated metal elements machining are known, in particular metal profiles and similar products, which comprise straightening groups.
  • these groups are used to carry out the straightening of rods wounded in rolls which, once unwrapped and straightened, can in any case have a more or less marked residual curvature, unsuited for subsequent machining operations or for direct use.
  • the aforementioned apparatuses may comprise, for example, straightening groups made by means of a plurality of counter-rotating wheels pairs, through which the rod is supplied, in order to undergo cyclical bending yield actions, aimed at eliminating the residual curvature.
  • the two rods simultaneously undergoing straightening may have different residual curvatures, as well as conformation differences, whose effects on the straightening results are made visible to the operators only after the first cycle or the first straightening cycles, making specific corrections necessary.
  • the first straightening cycle or the first straightening cycles are useful for operators to detect deviations from the desired straightening result, for each rod, and, therefore, to identify the corrections to be made.
  • the straightening apparatuses of the known type may provide for totally or partially separated straightening groups, therefore able to differentiate the straightening parameters for each rod.
  • the Applicant's application WO2016/063256 shows a magneto-resistive sensor, suitable for detecting the barycentre position of the metal element section, on a detection plane.
  • the specific field needs to detect the current position, thereby the possible distortion from the straighten condition, of a section of the element to be straightened, not only on a straightening line, but on two flanked lines.
  • the object of the present invention is to solve the aforementioned problems by devising a method for automatic straightening correction of elongated metal elements, in particular of at least one pair of metal elements to be machined also simultaneously, and an apparatus for the automatic straightening of the same elements, suitable for implementing this method.
  • Another object of the present invention is to provide an apparatus for the automatic straightening of at least a pair of elongated metal elements, of simple constructional and functional conception, provided with safe and reliable use, as well as a relatively economic cost.
  • a detection group in the apparatus according to the invention arranged downstream of the straightening unit, it is indeed possible to detect instantaneous data sufficient to reliably process the straightened configuration of a first element straightened along a first supplying line and then, separately, of a second element straightened along a second supply line flanked to the first supply line, in order to separately determine the parameters of the possible correction to be made to the respective straightening members.
  • the detection group can separately and effectively detect the straightening result on each straightening line. Thanks to this detection it is then possible to adjust the straightening on each line and, finally, proceed with the metal profiles machining on one single line or on both.
  • the effects of the adjustment operation carried out by means of the detection group according to the invention remain substantially stable for long sections of the same machined profile, for each supply line provided.
  • the detected data and the corrections processed in an initial phase can then be used simultaneously if the at least one pair of elements are machined simultaneously along the respective supply lines.
  • the respective corrections can be made separately on each supply line.
  • each of the supply flanked lines may be supplied subsequently, thus machining one element after another, separately.
  • the detection group comprises a plurality of sensor devices, arranged subsequently along the supply lines at the worktop.
  • At least one sensor device comprises a magneto-resistive sensor-type member, in particular according to what is illustrated in the application WO2016/063256 of the Applicant, here integrally incorporated.
  • the detection group is movable of an approach motion, to approach the sensor devices to the farthest supply line from the worktop.
  • the sensor devices can be alternatively movable between a position aligned with the worktop and a position protruding from it.
  • Figures 1 to 6 respectively show a perspective view, a side view and a plan view of elongated metal elements machining apparatus according to the invention, in a first operating condition and in a second operating condition;
  • Figures 7 to 12 respectively show the same views shown in figures 1 to 6, in the same operating conditions, of a different embodiment of the apparatus according to the invention.
  • FIG. 1 With particular reference to figures 1 to 6, reference is generally made with 1 to an automatic straightening apparatus for metal elongated elements, suitable for machining elongated metal elements, in particular profiles and metal rods. More precisely, the apparatus 1 is suitable for the simultaneous machining of a first element 2a and a second element 2b.
  • the first element 2a is suitable to be supplied at an apparatus worktop 3, for example substantially vertical or inclined with respect to a vertical plane, along a first supply line A.
  • the second element 2b is suitable to be supplied at the same worktop 3 along a second supply line B, substantially parallel and flanked to the first supply line A with respect to a transverse direction, in particular orthogonal, to the worktop 3.
  • the second supply line B is arranged in a more displaced position from the worktop 3, with respect to the first supply line A.
  • This straightening unit 4 can comprise a single group of counter-rotating wheels, able to carry out the straightening of the elements 2a, 2b.
  • Towing means may be provided along the respective supply lines A, B, in a different way with respect to the straightening unit 4, for the elements 2a, 2b advancement or integrated therein.
  • the straightening unit 4 can be of any type, for example rotors, hyperbolic rotors or mixed types.
  • the apparatus 1 is used in a stirrup bending machine, suitable for making pieces of bracket type, by the subsequent folding of the elements 2a, 2b.
  • the method and the apparatus according to the invention can be used in machines of other type besides straightening machines, for example, shaping machines.
  • the device 1 comprises, in the case shown by way of example, a bending head 5 arranged downstream of the straightening unit 4.
  • the bending head 5 operating on the worktop 3 comprises a central spindle 6 around which a folding pin 7 is rotatable.
  • a cutting group 8 is provided, provided with a pair of opposite blades, movable relatively to each other, to precisely cut elements 2a, 2b.
  • a detection group 10 Downstream of the bending head 5, according to the supply direction along the supply lines A, B, a detection group 10 is provided suitable for detecting useful parameters for automatically correcting the straightening to be carried out, on elements 2a, 2b, in particular by detecting the possible deviation of each straightened element from a desired straightening configuration, for the same element, in order to allow the respective correction parameters processing.
  • the detection group 10 comprises at least one sensor device 1 1 , preferably a plurality of sensor devices 1 1 subsequently arranged along supply lines A, B, in order to detect the position of a section of the elements 2a, 2b at respective detection planes.
  • each sensor device 1 1 has the function of detecting the position of respective sections of elements 2a, 2b which pass through the respective detection plane, when the aforementioned elements 2a, 2b are brought forward along the respective supply lines A, B.
  • each sensor device 1 1 is suitable for detecting at least at a moment the instantaneous position of a section, for example, of the first element 2a, during supply phase through at least one transverse detection plane to the respective supply line A, B.
  • associated processing means can process, based on the instantaneous position detected in the aforementioned successive moments, the configuration actually acquired by the supplied and straightened element along the respective supply line.
  • elements 2a, 2b moreover generally ribbed, hence with a discontinuous conformation, undergo more or less extensive oscillations.
  • Each sensor device 1 1 then operates, for each element 2a, 2b, the instantaneous position detection of subsequent moving sections, hence of a respective sufficiently extended section, for evaluating, for example on the basis of statistical calculations, the magnitude of such oscillations and in any case to return a processing of the correspondent straightened configuration taken, which the observed element would take in a static condition.
  • each sensor device 1 1 is carried out during the advancement phase of the elements 2a, 2b, but is suitable for returning as a result the straightened configuration processing of the same elements 2a, 2b, as if the observation was performed in a static condition.
  • the processing means of the device 1 are then suitable for processing the possible deviation from a desired straightened configuration of the observed element.
  • the detection group 10 can advantageously comprise at least one, preferably three, sensor devices 1 1 , suitable for detecting the respective sections position subsequent of the same element 2a, 2b and thus allowing processing, preferably by means of an associated processing unit of the aforementioned straightened configuration, actually taken by the observed element 2a, 2b.
  • the carried out correction may comprise an appropriate variation of the reciprocal position of some of the operating members of the straightening unit, for example of the straightening wheels, if provided, or of the straightening inserts of the rotors, if provided.
  • first element 2a and the second element 2b are independently brought forward through the straightening unit 4, in order to be able to alternately advance the first element 2a or the second element 2b during the detection phase or both, for example, during the production phase.
  • the sensor devices 1 1 can read the position of respective sections of a single element at a time, distinctly deriving the respective parameters of a possible, probable correction.
  • the sensor devices 1 1 are of the type described in the application WO2016/063256 of the Applicant. This type of sensor is suitable for detecting the barycentre position of a section of the observed element 2a or 2b, at the respective detection plane.
  • the magneto-resistive type sensor can be usefully protected by means, for example a metal sheet, of non-magnetic material.
  • Another sensor type may be used, provided that it is suitable for detecting the instantaneous position of a section of the observed element 2a, 2b.
  • the sensor devices 1 1 may be movable according to an approach motion to the elements 2a, 2b to be observed.
  • At least one sensor device 1 1 is movable of the aforementioned approach motion according to the aforementioned transverse direction, in particular orthogonal, to the worktop 3, between a first operating position 1 1 ', substantially operative on the worktop 3, for the detection along the first supply line A, approached to the plane itself, and a second operating position 1 1 ", protruding from the worktop 3, for the detection along the second supply line B, displaced from the plane itself.
  • At least one mobile sensor device 1 1 of the aforementioned approach motion is protected by a respective protective casing conforming a front slide 12, inclined in order to gradually protrude according to the supply direction A, B, to facilitate the sliding of the element to be observed on the worktop 3 and to prevent the same elements 2a, 2b being obstructed during the respective advancement motion.
  • each one of the three sensor devices 1 1 provided has its own protective casing conforming a respective slide 12.
  • the method for automatic straightening correction for elongated metal elements is easily comprehensible from the preceding disclosure.
  • the same straightening unit 4 carries out at the same time the straightening of the same first element 2a.
  • the straightened element 2a advances beyond the bending head 5, if provided, thus reaching the detection group 10.
  • the sensor devices 1 1 may then perform the detection of the respective observed sections. Based on these measurements, the possible correction to be made on the straightening members operating on the first supply line A may be determined.
  • the advancement of the first element 2a along the first advancement line A is then stopped.
  • cutting and removal of the first element 2a, already detected, from worktop 3, is carried out, or alternatively, the rewinding is carried out by means of the retraction of the same first element 2a.
  • the first element 2a is removed from the detection space interposed between the sensor devices 1 1 and the second element 2b, still to be observed and the operation may be repeated for subsequent iterations, until the desired degree of straightening is achieved.
  • the second element 2b is then inserted into device 1 or brought forward if already inserted. In any case, it is brought forward along the second advancement line B, in the sensor devices 1 1 operation area which, without the first element 2a, may be advantageously arranged in the second operating position 1 1 " protruding from the worktop 3 and approached to the second supply direction B.
  • the sensor devices 1 1 may then detect the sections position of the second element 2b observed, which pass through the respective detection planes. More precisely, the displacement of the sensor devices 1 1 in the second operating position 1 1 " also moves their radius of action near the element 2b, facilitating detection by the same sensor devices 1 1 .
  • the straightened configuration of the second element 2b can be processed by the aforementioned processing unit, in order to obtain the correction data required to obtain the straightened configuration with the desired tolerance.
  • the correction parameters separately for the flanked supply lines A, B, it is then possible to proceed with the first machining cycle, supplying simultaneously or subsequently, for example, both the first element 2a and the second element 2b.
  • the sensor devices 1 10 may be movable according to the aforementioned approach motion, between the first operating position 1 10', on the worktop 3, and the second operating position 1 10", approached to the second supply line B.
  • the detection group 10 described by a way of example, is susceptible of several modifications and variations depending on different requirements.
  • the materials used, as well as shape and dimensions, may be any according to requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)

Abstract

L'invention concerne un procédé et un appareil pour la correction par redressage automatique d'éléments métalliques allongés, permettant de fournir séparément et consécutivement un premier élément (2a) et un second élément (2b) le long de directions d'alimentation respectives (A, B). L'invention concerne également une phase de détection, au moyen d'un groupe de détection (10, 100), pour chaque élément (2a, 2b) à redresser au moyen d'un groupe de redressage (4).
PCT/IT2018/050130 2017-07-13 2018-07-11 Procédé destiné à la correction par redressage automatique d'éléments métalliques allongés et appareil de redressage destiné auxdits éléments WO2019012569A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18749883.7A EP3651918B1 (fr) 2017-07-13 2018-07-11 Procédé destiné à la correction par redressage automatique d'éléments métalliques allongés et appareil de redressage destiné auxdits éléments

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102017000079221A IT201700079221A1 (it) 2017-07-13 2017-07-13 Metodo per la correzione automatica della raddrizzatura di elementi metallici di foggia allungata e apparecchiatura per la raddrizzatura di tali elementi
IT102017000079221 2017-07-13

Publications (1)

Publication Number Publication Date
WO2019012569A1 true WO2019012569A1 (fr) 2019-01-17

Family

ID=60570050

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2018/050130 WO2019012569A1 (fr) 2017-07-13 2018-07-11 Procédé destiné à la correction par redressage automatique d'éléments métalliques allongés et appareil de redressage destiné auxdits éléments

Country Status (3)

Country Link
EP (1) EP3651918B1 (fr)
IT (1) IT201700079221A1 (fr)
WO (1) WO2019012569A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111842716A (zh) * 2020-07-15 2020-10-30 华力通线缆股份有限公司 一种用于电阻率测试实验的电缆丝拉直装置
IT202100017426A1 (it) * 2021-07-01 2023-01-01 Schnell Spa Gruppo di rilevamento della curvatura per elementi oblunghi, in particolare metallici

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0947256A2 (fr) * 1998-03-30 1999-10-06 Schnell S.p.A. Procédé et appareil de dressage de profilés métalliques et similaires
EP1402966A2 (fr) * 2002-09-25 2004-03-31 Schnell S.p.A. Dispositif de dressage des barres en fer avec dispositif de correction final
EP2627462B1 (fr) * 2010-10-14 2016-08-10 Schnell S.p.A. Ensemble d'étirage pour machines pour le travail des profilés métalliques

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0947256A2 (fr) * 1998-03-30 1999-10-06 Schnell S.p.A. Procédé et appareil de dressage de profilés métalliques et similaires
EP1402966A2 (fr) * 2002-09-25 2004-03-31 Schnell S.p.A. Dispositif de dressage des barres en fer avec dispositif de correction final
EP2627462B1 (fr) * 2010-10-14 2016-08-10 Schnell S.p.A. Ensemble d'étirage pour machines pour le travail des profilés métalliques

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111842716A (zh) * 2020-07-15 2020-10-30 华力通线缆股份有限公司 一种用于电阻率测试实验的电缆丝拉直装置
IT202100017426A1 (it) * 2021-07-01 2023-01-01 Schnell Spa Gruppo di rilevamento della curvatura per elementi oblunghi, in particolare metallici
WO2023275907A1 (fr) * 2021-07-01 2023-01-05 Schnell S.P.A. Appareil destiné à courber des éléments oblongs, ensemble et procédé de détection de la courbure d'éléments oblongs

Also Published As

Publication number Publication date
EP3651918B1 (fr) 2022-03-23
IT201700079221A1 (it) 2019-01-13
EP3651918A1 (fr) 2020-05-20

Similar Documents

Publication Publication Date Title
JP6630681B2 (ja) 完成された曲げ機及びそれに対応する方法
EP3651918B1 (fr) Procédé destiné à la correction par redressage automatique d'éléments métalliques allongés et appareil de redressage destiné auxdits éléments
EP3341144B1 (fr) Machine combinée pour travailler un fil machine et procédé de travail correspondant
EP2949407B1 (fr) Dispositif d'étirage pour des produits allongés et procédé d'étirage correspondant
EP2961543B1 (fr) Appareil d'étirage et de redressage pour fil métallique, et procédé d'étirage et de redressage correspondant
EP2699366A1 (fr) Machine de cintrage destinée à cintrer des barres métalliques, telles que des pièces rondes de renfort ou similaires
EP3012066A1 (fr) Maschine d'usinage bilaterale pour les bords des panneaux avec des appareils integres pour arrondir les coins
EP3131689A1 (fr) Réglage automatique de guide basé sur la rétroaction de paramètres de laminage
KR101380300B1 (ko) 와이어제품 성형기용 와이어 공급장치
EP3271096B1 (fr) Procédé de réalisation de cannelures
CN109127779B (zh) 带锯条的检测装置及校直机
RU2695845C2 (ru) Роликовая направляющая и способ направления исходного материала
EP3210685B1 (fr) Machine et procédé de cintrage pour produits tubulaires
DE102013012501A1 (de) Verbesserter Spannmechanismus mit motorangetriebenen Keilen für Schraubenwalzmaschinen
EP0348719A2 (fr) Machine à écorcer
CN216097762U (zh) 一种往复送料机构
WO2010136421A2 (fr) Appareil automatisé pour l'avancement différentiel de tringles et/ou barres métalliques pour la construction d'éléments électro-soudés rectilignes et/ou curvilignes et procédé de production correspondant
CN207204911U (zh) 一种带防护架的矫直机
KR20230021007A (ko) 장형 금속 제품의 가공 장치 및 방법
IT202100017426A1 (it) Gruppo di rilevamento della curvatura per elementi oblunghi, in particolare metallici
CN103357950A (zh) 拉弯矫直机圆盘剪前纠正装置
ITPN20100070A1 (it) Procedimento di laminazione siderurgica comprendente una fase perfezionata di taglio longitudinale e dispositivo per la sua realizzazione.

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18749883

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2018749883

Country of ref document: EP

Effective date: 20200213