EP0947256B1 - Verfahren und Vorrichtung zum Richten von Metallprofilen und dergleichen - Google Patents

Verfahren und Vorrichtung zum Richten von Metallprofilen und dergleichen Download PDF

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Publication number
EP0947256B1
EP0947256B1 EP99105027A EP99105027A EP0947256B1 EP 0947256 B1 EP0947256 B1 EP 0947256B1 EP 99105027 A EP99105027 A EP 99105027A EP 99105027 A EP99105027 A EP 99105027A EP 0947256 B1 EP0947256 B1 EP 0947256B1
Authority
EP
European Patent Office
Prior art keywords
rods
wheels
wheel
split
axis
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
EP99105027A
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English (en)
French (fr)
Other versions
EP0947256A3 (de
EP0947256A2 (de
Inventor
Simone Rupoli
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.)
Schnell SpA
Original Assignee
Schnell SpA
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Filing date
Publication date
Application filed by Schnell SpA filed Critical Schnell SpA
Publication of EP0947256A2 publication Critical patent/EP0947256A2/de
Publication of EP0947256A3 publication Critical patent/EP0947256A3/de
Application granted granted Critical
Publication of EP0947256B1 publication Critical patent/EP0947256B1/de
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
    • 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

Definitions

  • the present invention relates to a method and an apparatus for straightening metal profiled elements and the like, particularly iron rods used to produce reinforced-concrete frames.
  • An apparatus according to the preamble of claim 2 is e.g. known from EP-A-0 379 028.
  • the straightening elements generally provide for one or more straightening units, each of which is provided with pairs of contrarotating wheels arranged in series with parallel axes and between which the rods to be straightened are passed. It is known, for example, to use a first straightening unit and a second straightening unit arranged in series and meant to correct a corresponding component of the curvature of the coiled material, particularly on perpendicular planes, essentially a horizontal one and a vertical one.
  • the contrarotating wheels gradually correct the curvature of the rods, as shown schematically in Figure 4, in which the numerals 3 and 4 designate the wheels which act on opposite sides with respect to the plane whereon the rods 2 being processed are fed.
  • the wheels that lie on a same side with respect to the rod feed plane usually have an axis which can be adjusted in a direction which lies at right angles to said rod feed plane, so as to allow the contrarotating wheels to move mutually closer or further apart depending on the diameter of the rods to be straightened and on the flexing to be applied.
  • the adjustment of each horizontal or vertical straightening unit is handled separately, visually checking the results of the straightening process.
  • the method consists in applying a greater flexing by means of the first wheels, moving the movable wheels closer to the fixed wheels, and gradually reducing said correction until the adjustment corresponds to an essentially straight condition.
  • the two straightening units are adjusted separately in the same manner; the last two wheels of each straightening unit are used to perform the small corrections that become necessary after inspecting the result.
  • the simple logic of leveling is applied, as shown in Figures 5 and 6, which consider only the last three wheels of the straightening unit, i.e., the two movable wheels 4a and 4b and the underlying fixed wheel 3.
  • Twin straightening elements are also known which allow to simultaneously straighten two rods fed side by side.
  • the above-described correction step becomes more complicated for these straightening units.
  • the two rods in fact probably have a different degree of residual curvature, as shown in Figure 7, in which the numerals 2a and 2b designate the two side-by-side rods for the sake of greater clarity.
  • the twin straightening elements have, at the output, a split wheel which is substantially constituted by two side-by-side wheels 40a and 40b which are adapted to act individually on a corresponding rod 2a and 2b.
  • the correction of the residual curvature of the rods 2a, 2b is actuated by the operator by adjusting the axial position of said wheels 40a and 40b independently of each other.
  • the correction can be achieved only by acting in combination on said split wheel 40a and 40b and on the wheel 4 arranged ahead of it.
  • This correction in fact entails acting first on the upstream wheel 4, in order to return the rod 2b to the correct position; since the wheel 4 is a single wheel, said correction however entails an unwanted displacement of the other rod 2a, which was initially straight and must in turn be corrected subsequently by acting on the corresponding split wheel 40a.
  • the aim of the present invention is to solve the above problem, providing an apparatus of the twin type which allows to correct the residual curvature of the side-by-side rods simply and rapidly.
  • an object of the present invention is to provide a rod straightening apparatus which is simple in concept, safely reliable in operation and versatile in use.
  • the present apparatus for straightening iron rods and the like of the type comprising pairs of wheels arranged in series, with parallel axes, on opposite sides with respect to a plane along which two side-by-side rods to be straightened are fed, characterized in that it comprises, at a region where said rods exit therefrom, a first split wheel and a second split wheel, said wheels being arranged in series and being suitable to cooperate with respective contrarotating wheels, each one of said split wheels being constituted by a pair of wheels arranged side by side which are adapted to be engaged respectively by said side-by-side rods and are provided with means for an independent adjustment of the position of the axis of each wheel of said pair in a direction which is perpendicular to said feed plane of said rods.
  • the reference numeral 1 generally designates the apparatus for straightening the iron rods 2, for example of the type of rods used to manufacture frames for reinforced-concrete components.
  • the apparatus 1 has, in a substantially known manner, pairs of contrarotating free wheels 3 and 4 between which the rods 2 to be straightened are passed in a longitudinal feed direction A.
  • the wheels 3 and 4 have parallel axes and are staggered along the line formed by the feed direction A.
  • the wheels 3 and 4 are usually provided peripherally with a groove 5 which engages the rods 2 to be straightened; in particular, the width of the groove 5 allows it to receive two rods 2 arranged side by side to be straightened simultaneously (see Figure 2).
  • This adjustment is provided in a known manner, for example by means of an element 11 provided with a cylinder 12 which is arranged so that its axis is parallel to the feed direction A ( Figure 1).
  • the cylinder 12 is rotatably supported, at end tangs 13, by two supports 14 which are fixed to the plate 10.
  • the tangs 13 of the cylinder 12 are locked in the intended working position by means of screw elements 15 which are associated with the supports 14 and are contrasted by corresponding elastic elements 16 arranged in corresponding seats formed in said supports 14.
  • the cylinder 12 supports a plurality of adjustment screws 17 which are angularly distributed in radial directions; said screws have a rounded head and are locked in the intended position by means of corresponding nuts 18.
  • the adjustment screws 17 are adapted to act axially on respective stems 9 which are mounted so that they can slide along their own axis in corresponding holes formed in the plate 10 and are adapted to act on the pivot of the adjustable wheels 4 in contrast with respective elastic elements.
  • the cylinder 12 constitutes a sort of "mechanical memory” which is adapted to store the adjustments determined for each rod diameter.
  • first split wheel 20 and a second split wheel 21 which are arranged in series with respect to the adjustable wheels 4 and are adapted to cooperate with respective contrarotating wheels 3 which are staggered on the opposite side with respect to said feed plane of the rods 2.
  • Each one of the split wheels 20 and 21 is constituted by two wheels 22 and 23 arranged side by side, which are adapted to be respectively engaged by the rods 2 arranged side by side and are provided with independent adjustment of the position of the axis, in a direction which is perpendicular to said feed plane of the rods 2 ( Figure 2).
  • the side-by-side wheels 22 and 23 have a width which essentially corresponds to half of the wheels 3 and 4 and form in particular one half of the groove 5 of said wheels, in order to receive respective rods 2.
  • the split wheels 20 and 21 have an internal wheel 22, which is adjacent to the plate 10, and a wheel 23, which is external to the preceding one.
  • the internal wheel 22 is supported so that it can rotate, by means of a rolling element 24, by a pivot 25 in which the position of the axis is adjustable, at a slot 26 formed in the plate 10, in which a head 25a of the pivot 25 is slidingly guided; the pivot 25 is retained by a plate 27 which is locked by screw elements 28 on the head 25a ( Figure 2).
  • a corresponding stem 9 is adapted to act, in said direction at right angles to the feed plane of the rods 2, on the head 25a of the pivot 25; said stem is actuated, in contrast with an elastic element 19, by a corresponding adjustment screw 17 of the element 11, as described above for the wheels 4.
  • the outer wheel 23 is in turn rotatably supported, by means of a rolling element 29, by a pivot 30 which is supported by an arm 31 whose axial position can be adjusted at a slot 32 formed on the plate 10 in which a head 31a of the arm 31 is slidingly guided; the arm 31 is retained by a plate 33 which is locked by screw elements 34 ( Figure 3).
  • a corresponding stem 9 is adapted to act on the head 31a of the arm 31 in said direction at right angles to the feed plane of the rods 2, and is actuated, in contrast with an elastic element 19, by a corresponding adjustment screw 17 of the element 11, as already described.
  • the rods 2 to be straightened are fed, in the direction A, between the contrarotating wheels 3 and 4, which perform a gradual correction of the curvature of said rods 2.
  • the operator performs the corresponding correction by acting independently on the two wheels 22 and 23 of each split wheel 20, 21 arranged in series in the output region 1a of the apparatus.
  • the first split wheel 20 allows to correct the residual curvature of the rods 2 if it is an upward curvature, i.e., if its center of curvature is on the opposite side with respect to the wheels 4, 20 and 21 relative to the feed plane of said rods 2, as shown in Figure 8.
  • the second split wheel 21 instead allows to perform the correction if the residual curvature of the rods 2 has its center of curvature on the same side as the wheels 4, 20 and 21 with respect to the feed plane of the rods, as shown above in Figure 7.
  • the two wheels 22 and 23 of course allow to act independently on the two side-by-side rods 2.
  • the above-described straightening apparatus accordingly achieves the aim of simply and rapidly correcting the residual curvature of the side-by-side rods in twin machines.
  • This correction can in fact be performed by the operator with a single adjustment manoeuvre, acting independently on the split wheels 20 and 21 depending on the residual curvature to be corrected.
  • This correction is also performed and stored by acting simply on the corresponding adjustment screws 17 associated with the pivots 25, 30 of said split wheels 20 and 21, as usually occurs for the adjustable wheels 4 of the apparatus.
  • the materials employed may be any according to requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)
  • Coating With Molten Metal (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)

Claims (5)

  1. Verfahren zum Richten von Eisenstangen und dergleichen, mit den folgenden Schritten: Vorschieben von zwei nebeneinander angeordneten Stangen (2) zwischen Paaren von gegenläufigen Rädern (3, 4), die mit parallelen Achsen auf entgegengesetzten Seiten in Bezug auf eine Ebene, entlang der die gerade bearbeiteten Stangen (2) vorgeschoben werden, in Reihe angeordnet sind, Berühren der Stangen (2) in einem Ausgangsbereich mit einem ersten geteilten Rad (20) und einem zweiten geteilten Rad (21), wobei jedes geteiltes Rad (20, 21) durch ein Paar nebeneinander angeordnete Räder (22, 23) gebildet wird, die dafür eingerichtet sind, jeweils von den nebeneinander liegenden Stangen (2) berührt zu werden, und unabhängiges Einstellen der Position der Achse jedes Rades des Paares von nebeneinander liegenden Rädern (22, 23) jedes der geteilten Räder (20, 21) in einer Richtung, die senkrecht zu der Vorschubebene der Stangen (2) ist.
  2. Vorrichtung zum Richten von Eisenstangen und dergleichen, vom Typ mit Paaren von Rädern (3, 4), die mit parallelen Achsen auf entgegengesetzten Seiten in Bezug auf eine Ebene, entlang der zwei nebeneinander liegende zu richtende Stangen (2) vorgeschoben werden, in Reihe angeordnet sind, dadurch gekennzeichnet, dass sie in einem Ausgangsbereich ein erstes geteiltes Rad (20) und ein zweites geteiltes Rad (21) aufweist, wobei die geteilten Räder (20, 21) in Reihe angeordnet und dafür eingerichtet sind, mit jeweiligen gegenläufigen Rädern (3) zusammenzuarbeiten, wobei jedes geteiltes Rad (20, 21) durch ein Paar nebeneinander angeordnete Räder (22, 23) gebildet wird, die dafür eingerichtet sind, jeweils von den nebeneinander liegenden Stangen (2) berührt zu werden, und mit Mitteln für eine unabhängige Einstellung der Position der Achse jedes Rades des Paares in einer Richtung, die senkrecht zu der Vorschubebene der Stangen (2) ist, versehen sind.
  3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass die geteilten Räder (20, 21) ein inneres Rad (22), das an einen feststehenden Aufbau (10) angrenzend angeordnet ist, und ein äußeres Rad (23) aufweisen, wobei das Innere Rad (22) und das äußere Rad (23) so gelagert sind, dass sie sich mittels Wälzelementen (24, 29) um einen entsprechenden Drehzapfen (25, 30) drehen können, der eine einstellbare Axialposition hat.
  4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass das innere Rad (22) mittels des entsprechenden Drehzapfens (25) drehbar gelagert ist, dessen Achsenposition an einem Schlitz (26) eingestellt werden kann, der in dem feststehenden Aufbau (10) ausgebildet ist, in dem ein Kopf (25a) des Drehzapfens (25) verschiebbar geführt ist, wobei ein entsprechender Stiel (9) dafür eingerichtet ist, in der rechtwinklig zu der Vorschubebene der Stangen (2) liegenden Richtung auf den Kopf (25a) des Drehzapfens (25) einzuwirken, wobei der Stiel (9) entgegen Federmitteln (19) durch eine entsprechende Einstellschraube (17) betätigt wird.
  5. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass das äußere Rad (23) mittels des entsprechenden Drehzapfens (30) drehbar gelagert ist, der starr mit einem Arm (31) verbunden ist, wobei die Position der Achse an einem Schlitz (32) eingestellt werden kann, der in dem feststehenden Aufbau (10) ausgebildet ist, in dem ein Kopf (31a) des Arms (31) verschiebbar geführt ist, wobei ein entsprechender Stiel (9) dafür eingerichtet ist, in der rechtwinklig zu der Vorschubebene der Stangen (2) liegenden Richtung auf den Kopf (31a) des Arms (31) einzuwirken, wobei der Stiel (9) entgegen Federmitteln (19) durch eine entsprechende Einstellschraube (17) betätigt wird.
EP99105027A 1998-03-30 1999-03-22 Verfahren und Vorrichtung zum Richten von Metallprofilen und dergleichen Expired - Lifetime EP0947256B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBO980207 1998-03-30
IT98BO000207A IT1299943B1 (it) 1998-03-30 1998-03-30 Metodo e apparecchiatura per la raddrizzatura di profilati metallici e simili.

Publications (3)

Publication Number Publication Date
EP0947256A2 EP0947256A2 (de) 1999-10-06
EP0947256A3 EP0947256A3 (de) 2001-01-24
EP0947256B1 true EP0947256B1 (de) 2003-09-10

Family

ID=11343078

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99105027A Expired - Lifetime EP0947256B1 (de) 1998-03-30 1999-03-22 Verfahren und Vorrichtung zum Richten von Metallprofilen und dergleichen

Country Status (5)

Country Link
EP (1) EP0947256B1 (de)
AT (1) ATE249292T1 (de)
DE (1) DE69911094T2 (de)
DK (1) DK0947256T3 (de)
IT (1) IT1299943B1 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI109339B (fi) * 2000-11-24 2002-07-15 T Drill Oy Akselin ympäri pyörivän, kehäuralla varustetun oikaisu- tai kalibrointirullan kiinnitys- ja irrotusmekanismi
ITBO20020604A1 (it) * 2002-09-25 2004-03-26 Schnell Spa Gruppo di correzione finale in apparecchiature per
IT1398481B1 (it) 2010-02-17 2013-03-01 Schnell Spa Metodo e apparecchiatura per raddrizzare tondini di ferro e simili
IT1401411B1 (it) * 2010-08-04 2013-07-26 Schnell Spa Metodo e apparecchiatura per la correzione delle sollecitazioni di torsione in tondini metallici.
ITPD20120140A1 (it) * 2012-05-07 2013-11-08 Cosmal S R L Raddrizzatrice per nastro di lamiera da bobina
CN103056245A (zh) * 2013-01-17 2013-04-24 张家港市金采阳机械有限公司 一种校直块
CN103056244A (zh) * 2013-01-17 2013-04-24 张家港市金采阳机械有限公司 一种校直轮
AT515282B1 (de) * 2014-03-31 2015-08-15 Evg Entwicklung Verwert Ges Dressurvorrichtung
WO2016103218A1 (en) 2014-12-23 2016-06-30 Schnell S.P.A. Apparatus for straightening elements of elongated shape
CN105081014B (zh) * 2015-09-07 2017-02-01 一重集团大连设计研究院有限公司 锥套胀紧和键传动相结合的矫直圈锁紧装置
ITUA20162848A1 (it) 2016-04-22 2017-10-22 Schnell Spa Metodo per regolare automaticamente la raddrizzatura di elementi metallici di foggia allungata e apparecchiatura per raddrizzare gli stessi elementi
IT201700079221A1 (it) * 2017-07-13 2019-01-13 Schnell Spa Metodo per la correzione automatica della raddrizzatura di elementi metallici di foggia allungata e apparecchiatura per la raddrizzatura di tali elementi

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1235174B (it) * 1989-01-18 1992-06-23 Piegatrici Macch Elettr Gruppo regolazione ortogonale e procedimento per la regolazione ortogonale dei profilati raddrizzati
DE4311300C1 (de) * 1993-04-06 1994-02-24 Witels App Masch Albert Gmbh Richtapparat für drahtförmiges, mehrdrahtförmiges oder rohrförmiges Richtgut
IT1291259B1 (it) * 1997-03-13 1998-12-30 Schnell Spa Gruppo raddrizzante bifilare per materiali metallici in filo e simili.

Also Published As

Publication number Publication date
EP0947256A3 (de) 2001-01-24
ITBO980207A1 (it) 1999-09-30
EP0947256A2 (de) 1999-10-06
ITBO980207A0 (it) 1998-03-30
DK0947256T3 (da) 2004-01-05
IT1299943B1 (it) 2000-04-04
DE69911094D1 (de) 2003-10-16
DE69911094T2 (de) 2004-07-08
ATE249292T1 (de) 2003-09-15
ITBO980207A3 (it) 1999-09-30

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