EP1402966B1 - Vorrichtung zum Richten von Eisenstäben mit Endkorrektureinheit - Google Patents

Vorrichtung zum Richten von Eisenstäben mit Endkorrektureinheit Download PDF

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Publication number
EP1402966B1
EP1402966B1 EP03020586A EP03020586A EP1402966B1 EP 1402966 B1 EP1402966 B1 EP 1402966B1 EP 03020586 A EP03020586 A EP 03020586A EP 03020586 A EP03020586 A EP 03020586A EP 1402966 B1 EP1402966 B1 EP 1402966B1
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EP
European Patent Office
Prior art keywords
rollers
rods
straightening
auxiliary
auxiliary rollers
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
EP03020586A
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English (en)
French (fr)
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EP1402966A3 (de
EP1402966A2 (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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Publication date
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Priority to SI200331597T priority Critical patent/SI1402966T1/sl
Publication of EP1402966A2 publication Critical patent/EP1402966A2/de
Publication of EP1402966A3 publication Critical patent/EP1402966A3/de
Application granted granted Critical
Publication of EP1402966B1 publication Critical patent/EP1402966B1/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
    • 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

Definitions

  • the present invention relates to a final correction unit intended to be applied in apparatuses for straightening iron rods and the like originating from coils.
  • iron rods used for example to produce frames for reinforced concrete, are generally fed to machines provided with adapted straightening apparatuses.
  • These straightening apparatuses are usually provided with a plurality of straightening elements, constituted by pairs of contrarotating rollers that are grooved appropriately.
  • the rod that arrives from a coil is inserted between such contrarotating rollers along a preset direction of longitudinal advancement.
  • machines which allow to treat simultaneously two rods arranged longitudinally side by side.
  • the straightening apparatuses used in these machines are provided with twin straightening rollers adapted to be engaged by said pair of rods.
  • a straightening apparatus of this kind is disclosed for example in EPA 0947256, by the same Applicant.
  • the straightening operation is often performed by means of multiple series of straightening elements, which act on different planes, for example on two perpendicular planes as disclosed in JP-A-112 85 733 , in order to correct corresponding components of the curvature.
  • the rods that exit the straightening elements can sometimes have a residual curvature of more or less significant extent that is orientated unpredictably. This of course compromises the optimum production of the articles by means of the iron rods.
  • the aim of the present invention is to solve the cited problem, by providing a final correction unit that can be applied in apparatuses for straightening iron rods and the like that allows to correct the residual curvature of the rods rapidly and precisely.
  • an object of the present invention is to provide a unit for final correction of straightening that is capable of operating independently on two rods arranged side by side.
  • Another object of the present invention is to provide a unit for final correction of straightening that is simple in concept, safely reliable in operation, and versatile in use.
  • the present apparatus for straightening iron rods and the like comprising a final curvature correction unit that has the features of claim 1.
  • the reference numeral 1 generally designates the final correction unit adapted to be applied in an apparatus for straightening iron rods 2 originating from a coil.
  • the final correction unit 1 is arranged at the output region of the straightening apparatus, which comprises in a known manner pairs of contrarotating straightening rollers 3 and 4, which lie for example on a vertical plane and are appropriately grooved in order to form a seat for guiding the rods 2.
  • the lower rollers 3 are supported by a fixed frame 5, which is elongated in the direction A in which the rods 2 advance; the upper rollers 4 are instead supported by a plate 6, which is associated with the fixed frame 5 and can move at right angles to the advancement direction A, in order to allow to adjust the mutual distance of said rollers 3 and 4 according to the dimensions of the rods 2 and to the deformation to be imparted to the rod being processed.
  • the straightening apparatus acts on two rods 2a and 2b arranged side by side.
  • the correction unit 1 can be applied in any case at the output of any known type of straightening apparatus.
  • the correction unit 1 has at least one first auxiliary straightening roller 11 and one second auxiliary straightening roller 12, which are arranged practically downstream of, and in series to said rollers 3 and, if appropriate, are likewise grooved; the auxiliary straightening rollers 11 and 12 are adapted to cooperate with a contrast roller 13, which in turn is arranged in series to said rollers 4 of the straightening apparatus and is supported so that it can rotate freely by the movable frame 6.
  • the auxiliary rollers 11 and 12 and the abutment roller 13 have axes that are parallel to the axes of the straightening rollers 3 and 4.
  • the auxiliary rollers 11 and 12 are supported, so that they can rotate freely, by a supporting element 10 that oscillates about an axis that is parallel to the axis of said rollers 11 and 12 and is determined by a pivot 14 that passes through the frame 5.
  • twin auxiliary rollers are used, i.e., rollers constituted by pairs of mutually independent side-by-side rollers 11a, 11b and 12a, 12b, while the abutment roller can be constituted by' a single roller 13 that is common to the two rods being worked.
  • the oscillating supporting means 10 are constituted by a first internal support 15 and by a second external support 16, which substantially form a sort of shell that constitutes the support and receptacle of said pairs of side-by-side rollers 11a, 11b and 12a, 12b.
  • the first support 15 bears the inner auxiliary rollers 11a and 12a, which are mounted so that they can rotate freely, by way of adapted rolling means 17, on corresponding pivots 18a, 19a;
  • the second support 16 bears the outer auxiliary rollers 11 band 12b, which are mounted so that they can rotate freely, by way of corresponding rolling means 17, about corresponding pivots 18b, 19b (see Figure 5 ).
  • the first support 15 protrudes from a sleeve 20, which is mounted on the pivot 14 so that mutual rotation can occur.
  • the rotation axes of the supports 15 and 16 and the axis of the abutment roller 13 are arranged on a same plane at right angles to the advancement direction of the rods 2 being worked.
  • the supports 15 and 16, moreover, can be arranged on either side with respect to the line that connects the two rotation centers of the auxiliary rollers 11 and 12.
  • the supports 15 and 16 of the supporting means 10 are adapted to be actuated so as to perform an angular rotation by means of respective rocker elements 21 and 22, which can oscillate about the axis of the pivot 14. More specifically, the first rocker 21 is rigidly coupled to the sleeve 20 that constitutes the axis of the first support 15, while the second rocker 22 is rigidly coupled to the pivot 14 of the second support 16.
  • the angular position of the rockers 21 and 22 can be adjusted by way of respective adjustment means 31 and 32, which are actuated by corresponding gearmotors 33 and 34 supported by a bracket 30 that protrudes from the fixed frame 5.
  • the adjustment means 31 and 32 are constituted respectively by a shaft 35 and 36, which is supported so that it can rotate about a vertical axis, by way of suitable rolling means 37, at the bracket 30.
  • the shaft 35 and 36 has threaded portions 35a, 36a and 35b, 36b at its opposite ends. At the lower end of the shaft 35 and 36, the threaded portion 35a, 36a is coupled to a female thread 38, 39, which is formed in a cylindrical body. Said cylindrical body of the female thread 38 and 39 is inserted, so that it can rotate, in a correspondingly cylindrical seat formed in the rocker 21 and 22.
  • the threaded portion 35b, 36b is in turn coupled to a corresponding female thread formed in a slider 41, 42, which can slide along a guide 43, 44.
  • the slider 41, 42 has a protruding arm 45, 46, to which a linear position transducer 47, 48 of a per se known type is articulated.
  • the position transducer 47 of the first rocker 21 is rigidly coupled in a fixed position to a coupling 49 that protrudes from the frame 5, while the position transducer 48 of the second rocker 22 is rigidly coupled in a fixed position to a coupling 40 provided on the bracket 30.
  • the operation of the final correction unit entails advancing the iron rods 2a and 2b that exit from the contrarotating straightening rollers 3 and 4 of the straightening apparatus between the auxiliary rollers 11a, 11b and 12a, 12b and the abutment roller 13. If the rods 2a, 2b have no residual curvature and therefore no corrective intervention is needed, the auxiliary rollers 11a, 11b and 12a, 12b are kept in alignment with the straightening rollers 3, i.e., tangent to the advancement direction A of the rods ( Figure 1 ).
  • the oscillating supporting means 10 are made to perform an angular rotation in one direction or the other, so as to incline appropriately the plane of tangency formed by said auxiliary rollers 11a, 11b and 12a, 12b with respect to the advancement direction A (see Figures 2 and 3 ).
  • the adjustment means 31, 32 actuated by the corresponding gearmotors 33, 34 allow to act independently on the rockers 21 and 22, which are rigidly coupled to the supports 15 and 16 that support respectively the inner auxiliary rollers 11a, 12a and the outer auxiliary rollers 11b, 12b, correcting the residual curvature of the rod 2a or of the rod 2b independently of each other.
  • shafts 35 and 36 can be actuated manually, for example by means of suitable crank means or the like.
  • the rotation of the shaft 35 and 36 also produces, by means of the threaded portion 35b, 36b, the axial movement of the female thread produced by the slider 41 and 42, which can slide along the guide 43 and 44, and accordingly produces the actuation of the linear position transducer 47 and 48, which allows to measure the extent of the correction imparted and to send this information to electronic means for controlling the machine.
  • the final correction unit according to the invention therefore achieves the aim of correcting rapidly and precisely the residual curvature of iron rods and the like that exit from straightening elements, particularly by acting independently on a pair of rods arranged side by side.
  • a single actuation in fact adjusts the auxiliary rollers 11 and 12 (in the case of a pair of rods, the rollers 11a, 12a and 11b, 12b) appropriately and with perfect synchronization.
  • the auxiliary rollers 11 and 12 are arranged downward with respect to the rods 2 being worked, while the abutment roller 13 is arranged upward; however, the auxiliary rollers 11 and 12 can be arranged upward with respect to the rods 2 being worked and the abutment roller 13 can be arranged downward.
  • Figure 8 illustrates a different embodiment of the final correction unit, in which the auxiliary straightening rollers 11 and 12 are mounted, by way of the oscillating supporting means 10, on the movable plate 6 in alignment with the upper straightening rollers 4, while the contrast roller 13 is mounted on the fixed frame 5.
  • the operation of this correction unit is obviously similar to the one described previously.
  • Figures 9 and 10 illustrate another embodiment of the final correction unit, in which the means 10 for supporting the auxiliary rollers 11 and 12 are mounted on the plate 6 so that they can slide by means of suitable sliding guides 50 at right angles to the advancement direction of the rods 2 being worked, while the contrast roller 13 is mounted on the fixed frame 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Claims (15)

  1. Vorrichtung zum Richten von Eisenstäben und ähnlichen, die gegendrehende Richtwalzen (3, 4) umfasst, zwischen welchen die Eisenstäben (2) eingefügt werden, die im Vorschub entlang einer Längsrichtung (A) gerichtet werden sollen, und die am Ausgang eine Endkorrektureinheit (1) umfasst, die den Richtwalzen (3, 4) nachgeschaltet ist und mindestens eine erste zusätzliche Richtwalze (11) sowie eine zweite zusätzliche Richtwalze (12) umfasst, die Parallelachsen an den Achsen derselben Richtwalzen (3, 4) aufweisen und nacheinander auf derselben Ebene der Richtwalzen (3, 4) angeordnet sind; sowie eine Gegenwalze (13) umfasst, die mit den Hilfswalzen (11, 12) zusammenarbeitet, um die Eisenstäben (2) auf einer wechselseitigen Tangentialebene, die im wesentlichen längs zur Vorschubrichtung (A) verläuft, zu verriegeln, dadurch gekennzeichnet, dass die Endkorrektureinheit (1) Trägermittel (10) der Hilfswalzen (11, 12) umfasst, welche entsprechend einer lotrechten Achse auf der Ebene derselben Hilfswalzen (11, 12) schwingen; sowie Verstellungsmittel (31, 32) für die Winkelposition der Trägermittel (10) umfasst, um die Tangentialebene, die durch die Hilfswalzen (11, 12) bestimmt wird, im Verhältnis zur Vorschubrichtung (A) zu neigen, um eine Korrektur der verbliebenen Krümmung der Eisenstäben (2) zu erreichen.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Hilfswalzen (11, 12) aus Paaren von nebeneinander liegenden Walzen (11 a, 11 b bzw. 12a, 12b) bestehen, die unabhängig voneinander sind sowie dazu geeignet sind, mit einem Paar nebeneinander liegender Gegenwalzen (13a, 13b) zu zusammenarbeiten, um ein Paar entsprechender Eisenstäben (2a, 2b) zu verriegeln.
  3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Trägermittel (10) der Hilfswalzen (11, 12) aus einem ersten Träger (15), der die Hilfswalzen (11a, 12a) frei drehend stützt, sowie einem zweiten Träger (16), der die Hilfswalzen (11b, 12b) frei drehend stützt, bestehen, wobei die Hilfswalzen (11 b, 12b) sich im Verhältnis zu den vorherigen Walzen daneben befinden.
  4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die Träger (15, 16) der Trägermittel (10) eine Art von Schale bilden, um jeweils das Gehäuse der nebeneinander liegenden Walzenpaare (11a, 11b bzw. 12a, 12b) zu bestimmen.
  5. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die Träger (15, 16) der Trägermittel (10) an koaxialen Stiften (20, 14) mit entsprechenden Bügelmitteln (21, 22) starr verkuppelt sind, die dazu geeignet sind, voneinander unabhängig in Winkeldrehung durch die Verstellungsmittel (31, 32) betätigt zu werden.
  6. Vorrichtung nach Anspruch 1 oder 5, dadurch gekennzeichnet, dass die Verstellungsmittel (31, 32) jeweils eine Welle (35, 36) vorsehen, die drehbar um der seiner eigenen Achse gestützt wird und an einem Ende einen Gewindeabschnitt (35a, 36a) aufweist, der mit einer übereinstimmenden Schraubenmutter (38, 39) verbunden wird, die an die Bügelmittel (21, 22) angeschlossen ist.
  7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass die besagte Schraubenmutter (38, 39) aus einem zylinderförmigen Körper herausgearbeitet wird, der mit einer Drehkupplung in einen Formsitz eingefügt ist, der übereinstimmend zylinderförmig ist und aus den Bügelmitteln (21, 22) herausgearbeitet wird.
  8. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass die Welle (35, 36) der Verstellungsmittel (31, 32) dazu geeignet ist, von einem entsprechenden Getriebemotororgan (33, 34) in Drehung versetzt zu werden.
  9. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass die Welle (35, 36) der Verstellungsmittel (31, 32) an einem zweiten Ende einen zweiten Gewindeabschnitt (35b, 36b) aufweist, der mit einer übereinstimmenden Schraubenmutter (41, 42) verbunden wird, die an Positionswandler (47, 48) angeschlossen ist, die dazu geeignet sind, um die auf die Eisenstäben (2a, 2b) ausgeübte Ausdehnung der Korrektur zu messen.
  10. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Gegenwalze (13) frei drehbar von einem mobilen Rahmen (6) gestützt wird, um die Regulierung des wechselseitigen Abstandes von den Hilfswalzen (11, 12) zu ermöglichen.
  11. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Schwenkpünkte der Hilfswalzen (11, 12) frei drehbar durch einen mobilen Rahmen (6) auf der Ablagefläche der Richtvorrichtung gestützt werden, wobei sie sich rechtwinklig zur Vorschubrichtung der Eisenstäben (2), die in Bearbeitung sind, befinden, so dass es möglich ist, den wechselseitigen Abstand von den Gegenwalzen (13) zu regulieren.
  12. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die Träger (15, 16) auf beiden Seiten im Verhältnis zur Verbindungslinie der zwei Drehzentren der Hilfswalzen (11, 12) angebracht werden können.
  13. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die Drehachsen der Träger (15, 16) sowie die Achse der Gegenwalze (13) sich auf einer selben Ebene befinden, die rechtwinklig zur Vorschubrichtung der bearbeiteten Eisenstäben (2) verläuft.
  14. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Hilfswalzen (11, 12) im Verhältnis zu den bearbeiteten Eisenstäben (2) unterhalb liegen, während die Gegenwalze (13) sich oberhalb befindet.
  15. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Hilfswalzen (11, 12) im Verhältnis zu den bearbeiteten Eisenstäben (2) oberhalb liegen, während die Gegenwalze (13) sich unterhalb befindet.
EP03020586A 2002-09-25 2003-09-18 Vorrichtung zum Richten von Eisenstäben mit Endkorrektureinheit Expired - Lifetime EP1402966B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI200331597T SI1402966T1 (sl) 2002-09-25 2003-09-18 Naprava za izravnavanje železnih palic s končno korekturno enoto

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000604A ITBO20020604A1 (it) 2002-09-25 2002-09-25 Gruppo di correzione finale in apparecchiature per
ITBO20020604 2002-09-25

Publications (3)

Publication Number Publication Date
EP1402966A2 EP1402966A2 (de) 2004-03-31
EP1402966A3 EP1402966A3 (de) 2005-10-19
EP1402966B1 true EP1402966B1 (de) 2009-04-15

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EP03020586A Expired - Lifetime EP1402966B1 (de) 2002-09-25 2003-09-18 Vorrichtung zum Richten von Eisenstäben mit Endkorrektureinheit

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EP (1) EP1402966B1 (de)
AT (1) ATE428517T1 (de)
DE (1) DE60327140D1 (de)
DK (1) DK1402966T3 (de)
ES (1) ES2324213T3 (de)
IT (1) ITBO20020604A1 (de)
SI (1) SI1402966T1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010004037A2 (de) * 2008-07-10 2010-01-14 Arku Maschinenbau Gmbh Verfahren zum richten von teilen in einer walzenrichtmaschine
DK201070148A (da) 2010-04-15 2011-10-16 Pedax As Bukning af stang som føres i en krum bane mellem valser i et retteværk
IT1401411B1 (it) * 2010-08-04 2013-07-26 Schnell Spa Metodo e apparecchiatura per la correzione delle sollecitazioni di torsione in tondini metallici.
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
IT201900006816A1 (it) * 2019-05-14 2020-11-14 Schnell Spa Metodo e apparecchiatura per rilevare la configurazione di elementi di foggia allungata

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
IT1239667B (it) * 1990-03-15 1993-11-11 Mep Macchine Elettroniche Piegatrici Gruppo combinato di raddrizzatura e linearizzazione profilati
IT1299943B1 (it) * 1998-03-30 2000-04-04 Schnell Spa Metodo e apparecchiatura per la raddrizzatura di profilati metallici e simili.

Also Published As

Publication number Publication date
DE60327140D1 (de) 2009-05-28
EP1402966A3 (de) 2005-10-19
ITBO20020604A1 (it) 2004-03-26
DK1402966T3 (da) 2009-07-27
EP1402966A2 (de) 2004-03-31
ATE428517T1 (de) 2009-05-15
SI1402966T1 (sl) 2009-08-31
ES2324213T3 (es) 2009-08-03

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