WO2010044050A1 - Appareil de redressage de profils métalliques et analogues - Google Patents

Appareil de redressage de profils métalliques et analogues Download PDF

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Publication number
WO2010044050A1
WO2010044050A1 PCT/IB2009/054471 IB2009054471W WO2010044050A1 WO 2010044050 A1 WO2010044050 A1 WO 2010044050A1 IB 2009054471 W IB2009054471 W IB 2009054471W WO 2010044050 A1 WO2010044050 A1 WO 2010044050A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor unit
straightening
unit
rod
rotor
Prior art date
Application number
PCT/IB2009/054471
Other languages
English (en)
Inventor
Simone Rupoli
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.
Publication of WO2010044050A1 publication Critical patent/WO2010044050A1/fr

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Classifications

    • 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
    • B21F1/023—Straightening in a device rotating about the wire axis

Definitions

  • the present invention regards an apparatus for straightening metal profiles, for example iron rods and the like. Background Art
  • iron rods in coils used in particular to make reinforcements for reinforced concrete, are generally fed by respective reelsin order to be worked in machines equipped with suitable straightening groups.
  • Such straightening apparatuses are usually provided with a series of operating members suitable to act on the iron rod being fed before it reaches the successive working stations, for example the cutting station and sometimes successively the folding station.
  • Such apparatuses are suitable to eliminate the humps present in the rod and the residual curvature caused by the winding in a coil form.
  • the straightening members subject the rod to suitable flexure actions with intensities such as to overcome the material elastic limit, so as to substantially eliminate the residual curvature and to render the straightening effect permanent.
  • the straightening apparatus comprises one or more straightening units constituted of couples of counter-rotating wheels, suitably grooved, opposite with respect to the axis of the rod, in order to suitably engage the same rod fed therebetween.
  • the counter-rotating wheels are arranged in succession and with parallel axis.
  • Such apparatuses of the known type can be provided with a first straightening unit and a second straightening unit, suitable to correct prevalently corresponding components of the curvature of the iron rod, in particular on perpendicular planes, for example on a horizontal plane and on a vertical one.
  • the counter-rotating wheels gradually correct the curvature of the rod, acting from opposite sides with respect to the rod being fed, in a way as to constrain this latter to assume a substantially damped sinusoid profile, which finally assumes a substantially rectilinear trend.
  • the straightening members are inserted inside a rotating member or rotor, suitable to be driven in rotation about an axis coinciding substantially with the rod feed direction.
  • the straightening members used in such rotors are constituted of inserts or reeds radially distributed inside the rotor, in a way as to act by rotating flexure on the crossing iron rod.
  • each straightening element compresses and drags on the rod as consequence of the rotating motion of the rotor, consequently correcting the rod residual curvature in every lying plane.
  • Such types of apparatus have the drawback of ruining the iron surface that, in the case of the rod for reinforced concrete, must be ribbed and must satisfy precise technical requirements. Both solutions require drawing means to feed the rod being worked.
  • the straightening members present inside the rotor are constituted by rollers rotating about axis suitably inclined with respect to the longitudinal feed axis of the rod.
  • the straightening members roll on the external surface of the rod to be straightened, so as to considerably reduce the wear and tear effects deriving from the friction.
  • the straightening rollers result arranged inclined with respect to the longitudinal feed axis of the iron rod, so that the rotation motion generated by suitable motorization generates an axial component on the iron rod, which is able to cause the axial advancing thereof.
  • the presence of such an axial component makes the hyperbolic rotors intrinsically provided with a system for advancing the iron rod.
  • the nowadays hyperbolic rotors straightening apparatuses are not provided with a drawing unit, unlike the inserts rotors.
  • the axial component generated in the hyperbolic rotors turns out to be not very high, so that in order to reduce the drawing effort the motorization of the reels from which the material unwinds has to be frequently used.
  • the task of the present invention is that of solving the aforementioned problems, devising a hyperbolic rotor straightening apparatus that allows to obtain a precise and fast feeding of the iron rod.
  • a further object of the present invention is that of providing a straightening apparatus that allows to render the wear and tear of the rollers minimum.
  • Another scope of the present invention is that of providing an apparatus for straightening iron rods and the like having a simple conception, a securely reliable functioning and versatile use, as well as relatively economic cost.
  • figure 1 shows an axonometric perspective view of a portion of a machine for working the iron rod provided with the straightening apparatus according to the invention
  • figure 2 shows a front view of the same machine portion.
  • the straightening apparatus 1 comprises at least a rotor unit 2 suitable to be driven in rotation about the own longitudinal axis A, under control of motor members of known type, not shown.
  • the rotor unit 2 provides a hollow body 3, arranged according to the above-mentioned longitudinal axis A, suitable to define inits own interior an axial cavity along which is driven in advancing the iron rod 20 to be straightened.
  • the hollow body 3 of the rotor unit 2 is borne rotating at the opposite ends by a couple of supports 5 through the interposition of rolling means.
  • the supports 5 are fixed to the fixed frame 6 of the apparatus.
  • the rotor unit 2 is suitable to house, in suitable seats defined in its own interior, a plurality of straightening members 4 constituted by grooved rollers.
  • the straightening rollers 4 are arranged in a suitable sequence in correspondence of a substantially central portion of the rotor unit 2 and are rotating, in a known way, on respective pins eccentric to the longitudinal axis A of the rotor unit 2.
  • the straightening rollers 4 are arranged preferably in alternative mode from opposite parts with respect to the cited longitudinal axis A, in a way as to act alternatively on opposite surfaces of the iron rod that crosses the rotor unit 2.
  • the axis of each roller 4 is preferably arranged on a plane inclined with respect to the longitudinal axis of the rotor unit 2.
  • An auxiliary drawing unit 7 is associated withand arranged in line with the rotor unit
  • the drawing unit 7 is equipped with couples of wheels 8, 9 suitably motorized through motor units 12 suitable to cause the feed of the iron rod 20 along the longitudinal axis A.
  • the drawing unit 7 provides two couples of wheels 8, 9 arranged in series, with the axis orthogonal to the feed direction A of the iron rod; but it is possible to use differently shaped drawing units of known type.
  • the driving wheels 8 of the drawing unit 7 result operated in rotation at the same angular speed, while the wheels 9 coupled to the preceding ones result driven.
  • the driven wheels 9 are subjected to an opening mechanism 10, operated by a suitable actuator unit 11.
  • the opening mechanism 10 is suitable to move the driven wheels 9 between a drawing position set to the driving wheels 8 and a distanced position for inserting the iron rod to put in working.
  • the apparatus provides a first and a second rotor unit 2, arranged respectively upstream and downstream to the auxiliary drawing unit 7 and suitably counter-rotating.
  • a single rotor unit 2 arranged upstream or downstream to the aforesaid drawing unit 7.
  • the rotor unit 2 is driven in rotation and by means of the straightening rollers 4 acts on the iron rod 20 that crosses longitudinally the cavity of the hollow body 3 of the rotor 2.
  • the iron rod 20 is made advancing by the drawing unit 7 that through the couples of driven wheels 8, 9 engages the same iron rod 20.
  • the described apparatus attains the scope of providing a straightening apparatuswith hyperbolic rotor, that allows to obtain a precise and fast feed of the iron rod.
  • a characteristic of the straightening apparatus in hand is that of rendering the wear and tear of the straightening members minimum.
  • the presence of the auxiliary drawing unit allows to practically cancel, or at least to reduce at the minimum, the possible slipping between the straightening members of the hyperbolic rotor and the iron rod. This makes the straightening bodies less worn. As a consequence the production of heat turns out to be minimum and the support bearings of the same straightening members less stressed.
  • auxiliary drawing unit allows to feed the iron rod at a substantially faster speed than the one normally used in the traditional hyperbolic rotors.
  • auxiliary drawing unit allows to have a constant speed of advancing of iron rod, in a way as to assure the precision of the successive cutting process. In practice the apparatus in hand warrants the perfect adherence to the operating conditions provided and so products having a high qualitative level. In this way bigger accelerations can be subjected to the rod.
  • a further important advantage of the apparatus consists in the fact that it is possible to avoid any motorization for the reels, which on the contrary is necessary in the use of traditional hyperbolic rotors, with a sensible reduction of the overall costs of the plant.
  • the straightening apparatus allows to overcome the technical prejudice for which the traditional hyperbolic rotors do not provide the use of fixed drawing means, the drawing function being carried out by the same straightening members.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Coating With Molten Metal (AREA)
  • Wire Processing (AREA)

Abstract

L’appareil de redressage de profils métalliques et analogues comprend au moins une unité rotor (2) appropriée pour être entraînée en rotation autour d’un axe longitudinal (A) et une pluralité de corps de redressage (4) à rouleaux excentrés, logés à l’intérieur de l’unité rotor (2) et entraînés en rotation par cette unité rotor (2) afin de mettre en prise la tige de fer (20) à redresser. A l’unité rotor (2) est associée une unité d’étirage auxiliaire (7), alignée sur l’unité rotor (2), le long de l’axe longitudinal (A), et pourvue de deux roues motorisées (8, 9) appropriées pour provoquer l’introduction de la tige de fer (20) dans l’unité rotor (2).
PCT/IB2009/054471 2008-10-15 2009-10-12 Appareil de redressage de profils métalliques et analogues WO2010044050A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBO2008A000634 2008-10-15
IT000634A ITBO20080634A1 (it) 2008-10-15 2008-10-15 Apparecchiatura per raddrizzare profilati metallici e simili

Publications (1)

Publication Number Publication Date
WO2010044050A1 true WO2010044050A1 (fr) 2010-04-22

Family

ID=41047359

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2009/054471 WO2010044050A1 (fr) 2008-10-15 2009-10-12 Appareil de redressage de profils métalliques et analogues

Country Status (2)

Country Link
IT (1) ITBO20080634A1 (fr)
WO (1) WO2010044050A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103272966A (zh) * 2013-05-22 2013-09-04 戴文育 一种甩辊轮及旋转式切刀的钢筋调直机
CN103752725A (zh) * 2013-11-11 2014-04-30 浙江博雷重型机床制造有限公司 一种数控弯线机的机头
CN109647936A (zh) * 2018-12-14 2019-04-19 华电电力科学研究院有限公司 套装汽轮机转子的直轴方法
CN112387814A (zh) * 2021-01-19 2021-02-23 山东德日机械科技有限公司 衬套内径滚圆机

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3264855A (en) * 1963-09-17 1966-08-09 Air Reduction Demountable hollow armature wire straightener
DE1800297A1 (de) * 1968-10-01 1970-05-06 Vni I P Ki Metall Masinostroje Maschine zum Richten laenglicher Gegenstaende vom Rohrtyp
US3543810A (en) * 1968-06-12 1970-12-01 Union Carbide Corp Rotary wire welding straightener
DE2907468A1 (de) * 1979-02-26 1980-09-04 Lindemann Wolfgang Richtmaschine
EP0016422A1 (fr) * 1979-03-19 1980-10-01 Lindemann, Wolfgang, Dr.-Ing., Dipl.-Phys. Machine à dresser pour tubes à parois minces
EP1847337A1 (fr) * 2006-04-20 2007-10-24 WAFIOS Aktiengesellschaft Système d'entraînement d'un rotor d'une machine à dresser pour le dressage des fils métalliques

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3264855A (en) * 1963-09-17 1966-08-09 Air Reduction Demountable hollow armature wire straightener
US3543810A (en) * 1968-06-12 1970-12-01 Union Carbide Corp Rotary wire welding straightener
DE1800297A1 (de) * 1968-10-01 1970-05-06 Vni I P Ki Metall Masinostroje Maschine zum Richten laenglicher Gegenstaende vom Rohrtyp
DE2907468A1 (de) * 1979-02-26 1980-09-04 Lindemann Wolfgang Richtmaschine
EP0016422A1 (fr) * 1979-03-19 1980-10-01 Lindemann, Wolfgang, Dr.-Ing., Dipl.-Phys. Machine à dresser pour tubes à parois minces
EP1847337A1 (fr) * 2006-04-20 2007-10-24 WAFIOS Aktiengesellschaft Système d'entraînement d'un rotor d'une machine à dresser pour le dressage des fils métalliques

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103272966A (zh) * 2013-05-22 2013-09-04 戴文育 一种甩辊轮及旋转式切刀的钢筋调直机
CN103752725A (zh) * 2013-11-11 2014-04-30 浙江博雷重型机床制造有限公司 一种数控弯线机的机头
CN109647936A (zh) * 2018-12-14 2019-04-19 华电电力科学研究院有限公司 套装汽轮机转子的直轴方法
CN109647936B (zh) * 2018-12-14 2020-05-26 华电电力科学研究院有限公司 套装汽轮机转子的直轴方法
CN112387814A (zh) * 2021-01-19 2021-02-23 山东德日机械科技有限公司 衬套内径滚圆机
CN112387814B (zh) * 2021-01-19 2021-04-06 山东德日机械科技有限公司 衬套内径滚圆机

Also Published As

Publication number Publication date
ITBO20080634A1 (it) 2010-04-16

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