EP0538763A1 - Dispositif pour corriger et dresser des barres en fer et similaires - Google Patents

Dispositif pour corriger et dresser des barres en fer et similaires Download PDF

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Publication number
EP0538763A1
EP0538763A1 EP92117830A EP92117830A EP0538763A1 EP 0538763 A1 EP0538763 A1 EP 0538763A1 EP 92117830 A EP92117830 A EP 92117830A EP 92117830 A EP92117830 A EP 92117830A EP 0538763 A1 EP0538763 A1 EP 0538763A1
Authority
EP
European Patent Office
Prior art keywords
rollers
iron rod
advancement axis
rotating unit
actuated
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.)
Granted
Application number
EP92117830A
Other languages
German (de)
English (en)
Other versions
EP0538763B1 (fr
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
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 SpA filed Critical Schnell SpA
Publication of EP0538763A1 publication Critical patent/EP0538763A1/fr
Application granted granted Critical
Publication of EP0538763B1 publication Critical patent/EP0538763B1/fr
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
    • 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
    • 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 relates to a device for correcting the straightening of iron rods and the like, in particular for building.
  • iron rods used for example to produce shaped rods for reinforced concrete and the like are generally machined from a spool wherein the iron wire is wound in a reel.
  • the machines used to produce said shaped rods usually have a unit for feeding and straightening the iron rod and a bending chuck which subjects a front portion of the rod to an appropriate series of bending actions, so as to obtain the required shape; the bending is combined with the operation for the transverse cutting of said portion of the rod.
  • the straightening operation is performed by said devices uniformly along the entire wire, whereas said wire generally does not have uniform characteristics. Therefore the iron rod, when it exits from the straightening step, can have a more or less significant twist which is orientated unpredictably on different planes and is variously orientated. This obviously compromises the optimum execution of shaped rods.
  • the aim of the present invention is to solve the above problem by providing a device which allows to correct any defects in the straightening of iron rods rapidly and without halting the operation of the machine.
  • an object of the present invention is to provide a device for correcting the straightening of iron rods which is simple in concept, safely reliable in operation and versatile in use.
  • the present device for correcting the straightening of iron rods and the like, characterized in that it comprises a rotating unit which is suitable to be actuated so as to perform an angular rotation, about the advancement axis of an iron rod, by a first motor element, so as to arrange itself on different planes in relation to the correction to be performed; a plurality of rollers which are mounted so as to be co-planar on said rotating unit and between which said iron rod is passed; a crank system which can be actuated by a second motor element, which is supported by said rotating unit, and is suitable to simultaneously adjust the mutual distance of said rollers from said iron rod advancement axis.
  • the reference numerals 1 and 2 designate respectively an input head and an output head for the iron rod, which is fed in the direction indicated by the arrow A.
  • the heads 1 and 2 have respective holes 3 and 4 which are axially aligned and through which the iron rod is passed.
  • the input head 1 axially defines a sleeve 5, at the end of which there is an inlet 3a for the iron rod; said sleeve 5 is rotatably supported, by virtue of a rolling bearing 6, by a support 7 which is rigidly associated with a fixed frame which is not illustrated.
  • the output head 2 axially defines a tubular shaft 8 which is suitable to be rotated by a gearmotor 9 which is supported by said fixed frame.
  • the gearmotor 9 can be actuated so as to impart appropriate angular strokes within an arc of 360 o .
  • the heads 1 and 2 are similarly flattened and are fixed between a pair of parallel plates 10 which are arranged symmetrically at the sides of the advancement axis of the iron rod.
  • the plates 10 are therefore spaced from each other by an extent equal to the thickness of the heads 1 and 2.
  • rollers are mounted between the plates 10 so that they are co-planar, and the iron rod is passed between them. Said rollers are in fact arranged along the vertices of a triangle which is crossed, parallel to its base, by the iron rod advancement axis.
  • two of said rollers designated by 11a and 11b for the sake of clarity, are arranged on one side with respect to the above mentioned advancement axis, whereas the other roller 11c is arranged on the opposite side.
  • rollers 11a, 11b and 11c are rotatably mounted, by virtue of rolling bearings 12, on respective eccentric elements 13a, 13b and 13c which are defined by related shafts 14a, 14b and 14c.
  • the shafts 14a, 14b and 14c are rotatably supported, by virtue of bushes 15, by the opposite plates 10 and are therefore perpendicular to said plates 10.
  • the first shaft 14a is suitable to be actuated so as to perform angular rotations by a further gearmotor 16 which is fixed externally to one of the plates 10. Said angular rotation is transmitted to the shafts 14b, 14c by means of a crank system which comprises the cranks 17a, 17b and 17c, which are fixed radially at one end of the respective shafts 14a, 14b and 14c; the cranks 17a, 17b have respective levers 19a, 19b which are articulated to them by means of pivots 18; said levers are in turn articulated to the crank 17c about a common axis.
  • crank system is arranged externally to the plate 10 which is opposite to the one which supports the gearmotor 16 and is protected by a housing 20.
  • the iron rod subjected beforehand to the straightening operation, is guided by known traction means so that it enters the input head 1 and exits from the output head 2; the rod is thus made to pass between the rollers 11a, 11b and 11c which are mounted between the plates 10.
  • Said rollers 11a, 11b and 11c are substantially supported by a unit which rotates about the advancement axis of the rod and can be actuated so as to perform an angular rotation by means of the first gearmotor 9.
  • the assigned operator actuates the gearmotor 9 so as to appropriately rotate said rotating unit.
  • said unit is rotated angularly until the plane of arrangement of the rollers 11a, 11b and 11c is on the same plane on which the twist occurs.
  • the operator actuates the second gearmotor 16, which is rigidly associated with the rotating unit, so as to impart an appropriate angular rotation to the shaft 14a of the first roller 11a; a simultaneous rotation is imparted to the further shafts 14b, 14c of the rollers 11b, 11c by means of the crank system which links them.
  • the shaft 14b is rotated in the same direction as the shaft 14a, whereas the shaft 14c is rotated in the opposite direction.
  • the rotation of the shafts 14a, 14b and 14c causes the symmetrical approach or spacing, depending on the direction of rotation, of the two first rollers 11a, 11b toward or away from the opposite roller 11c, i.e. the simultaneous adjustment of the distance of said rollers from the iron rod advancement axis.
  • the angular rotation of the shafts 14a, 14b and 14c in fact causes the movement of the related eccentric elements 13a, 13b and 13c on which the rollers 11a, 11b and 11c are rotatably mounted; essentially, the axis of said eccentric elements rotates about the fixed axis of the shafts, moving toward or away from the rod.
  • the leveling action of the rollers 11a, 11b and 11c performs the final straightening of the iron rod, correcting any twists.
  • the mutual distance of the rollers 11a, 11b and 11c from the rod advancement axis is adjusted according to the defect to be corrected and to the diameter of said rod.
  • the materials employed, as well as the shape and dimensions, may be any according to the requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
  • Coating With Molten Metal (AREA)
  • Attitude Control For Articles On Conveyors (AREA)
  • Tyre Moulding (AREA)
EP92117830A 1991-10-22 1992-10-19 Dispositif pour corriger et dresser des barres en fer et similaires Expired - Lifetime EP0538763B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBO910386 1991-10-22
ITBO910386A IT1253217B (it) 1991-10-22 1991-10-22 Dispositivo di correzione della raddrizzatura di tondini di ferro e simili

Publications (2)

Publication Number Publication Date
EP0538763A1 true EP0538763A1 (fr) 1993-04-28
EP0538763B1 EP0538763B1 (fr) 1996-03-20

Family

ID=11337791

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92117830A Expired - Lifetime EP0538763B1 (fr) 1991-10-22 1992-10-19 Dispositif pour corriger et dresser des barres en fer et similaires

Country Status (5)

Country Link
EP (1) EP0538763B1 (fr)
AT (1) ATE135610T1 (fr)
DE (1) DE69209218T2 (fr)
DK (1) DK0538763T3 (fr)
IT (1) IT1253217B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102248143A (zh) * 2011-07-05 2011-11-23 中冶连铸技术工程股份有限公司 一种上下辊双传动的独立机架钳式拉矫机
CN111810072A (zh) * 2020-07-28 2020-10-23 四川大学 一种连续导管式取芯设备

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110548822B (zh) * 2019-10-15 2024-04-09 北京睿通机械制造有限公司 一种校直机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2092840A (en) * 1935-05-03 1937-09-14 American Steel & Wire Co Strand straightener
GB1105841A (en) * 1963-06-21 1968-03-13 Wire Products And Machine Desi Improvements in or relating to apparatus for cutting wire, rods or strips into precise lengths
US4719781A (en) * 1986-08-07 1988-01-19 Jean Cloup Device for straightening metal wires by means of a plurality of rollers
WO1991017003A1 (fr) * 1990-05-03 1991-11-14 Carrere Noel Dresseur a galets en particulier pour aciers a beton

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2092840A (en) * 1935-05-03 1937-09-14 American Steel & Wire Co Strand straightener
GB1105841A (en) * 1963-06-21 1968-03-13 Wire Products And Machine Desi Improvements in or relating to apparatus for cutting wire, rods or strips into precise lengths
US4719781A (en) * 1986-08-07 1988-01-19 Jean Cloup Device for straightening metal wires by means of a plurality of rollers
WO1991017003A1 (fr) * 1990-05-03 1991-11-14 Carrere Noel Dresseur a galets en particulier pour aciers a beton

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 10, no. 70 (M-462)(2127) 19 March 1986 & JP-A-60 213 326 ( FUJITSU KK ) 25 October 1985 *
PATENT ABSTRACTS OF JAPAN vol. 8, no. 280 (M-347)(1717) 21 December 1984 & JP-A-59 150 636 ( DAIDO TOKOSHUKO ) 28 August 1984 *
SOVIET PATENTS ABSTRACTS Section PQ, Week C41, 19 November 1980 Derwent Publications Ltd., London, GB; Class P, & SU-A-718 204 (FEIGIN YASH) 28 February 1980 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102248143A (zh) * 2011-07-05 2011-11-23 中冶连铸技术工程股份有限公司 一种上下辊双传动的独立机架钳式拉矫机
CN102248143B (zh) * 2011-07-05 2013-01-16 中冶连铸技术工程股份有限公司 一种上下辊双传动的独立机架钳式拉矫机
CN111810072A (zh) * 2020-07-28 2020-10-23 四川大学 一种连续导管式取芯设备

Also Published As

Publication number Publication date
ATE135610T1 (de) 1996-04-15
ITBO910386A1 (it) 1993-04-22
DK0538763T3 (da) 1996-06-10
EP0538763B1 (fr) 1996-03-20
IT1253217B (it) 1995-07-11
ITBO910386A0 (it) 1991-10-22
DE69209218T2 (de) 1996-08-01
DE69209218D1 (de) 1996-04-25

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