EP0864387B1 - Twin-wire straightener for metallic materials in wire form and the like. - Google Patents

Twin-wire straightener for metallic materials in wire form and the like. Download PDF

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Publication number
EP0864387B1
EP0864387B1 EP97117690A EP97117690A EP0864387B1 EP 0864387 B1 EP0864387 B1 EP 0864387B1 EP 97117690 A EP97117690 A EP 97117690A EP 97117690 A EP97117690 A EP 97117690A EP 0864387 B1 EP0864387 B1 EP 0864387B1
Authority
EP
European Patent Office
Prior art keywords
wires
straightener
axes
straightening elements
plane
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
EP97117690A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0864387A1 (en
Inventor
Bernardino Monti
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 EP0864387A1 publication Critical patent/EP0864387A1/en
Application granted granted Critical
Publication of EP0864387B1 publication Critical patent/EP0864387B1/en
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

Definitions

  • the present invention relates to a twin-wire straightener for metallic materials in wire form and the like according to the preamble of claim 1 (see e.g. WO-A-93 19865).
  • machines are conventionally employed which are equipped with suitable straightening elements.
  • said machines generally have at least one straightener provided with a plurality of mutually opposite straightening elements constituted by contrarotating wheels; the materials being treated, which arrive from bars and from rolls or reels, are inserted between said wheels along a preset longitudinal advancement axis.
  • Said machines often have two straighteners arranged in series, in which one has wheels provided with vertical axes and the other one has wheels provided with horizontal axes, said straighteners being meant to correct a corresponding Cartesian component of the curvature.
  • twin-wire machines which allow to simultaneously treat two wires, which are arranged longitudinally side by side along said advancement axis.
  • the straighteners are provided with straightening elements which are peripherally provided with a twin groove meant to be engaged by the two wires to be straightened.
  • twin-wire machines the problem is therefore felt of tilting the plane of arrangement of the wires to be straightened during transfer from the first straightener to the second straightener.
  • the two wires are in fact superimposed on a vertical plane, whilst in the second straightener they are arranged side by side on a horizontal plane.
  • Tilting devices are currently known for this purpose which are substantially constituted by a tubular cam provided with a helical profile and are arranged in an intermediate position between the two straighteners.
  • Said devices in addition to being relatively expensive, can also cause considerable wear of the surface of the wires being treated and can also negatively affect the straightening of the wires.
  • the aim of the present invention is to solve the above problem, by providing a twin-wire straightener that allows to tilt the plane of arrangement of the wires that leave said straightener without causing wear and without compromising the correct straightening of said wires.
  • an object of the present invention is to provide a twin-wire straightener which is simple in concept, safely reliable in operation, versatile in use and has a relatively low cost.
  • the present twin-wire straightener for metallic materials in wire form and the like, of the type comprising a double set of straightening elements which are supported so that they rotate in mutually opposite directions along parallel axes and between which two wires to be straightened are suitable to be inserted along a preset longitudinal advancement axis, said wires being arranged side by side on a plane of arrangement which is parallel to said axes of the straightening elements, said straightening elements being peripherally provided with a twin groove meant to be engaged by said wires to be straightened, said straightener being characterized in that it comprises a device for tilting the plane of arrangement of said wires, said device having a first and a second conical rollers which are supported so that they can rotate freely, about axes which are parallel to the axes of said straightening elements, downstream of said straightening elements along said longitudinal advancement axis, and are arranged so that they are mutually spaced and have mutually opposite tapers, so as
  • the reference numeral 1 generally designates the twin-wire straightener for metallic materials 2 in wire form and the like, for example iron rods for reinforced concrete.
  • metallic materials are generally termed wires.
  • the straightener 1 has, in a per se known manner, a double set of straightening elements 3 and 4, which are supported so that they rotate in mutually opposite directions by a frame 5 about vertically parallel axes; two wires 2 to be straightened are suitable to be inserted between the straightening elements 3 and 4, along a preset longitudinal advancement axis; said wires are mutually superimposed on a vertical plane of arrangement which is parallel to the axes of said straightening elements 3 and 4.
  • the wires 2 to be straightened are inserted between the straightening elements 3 and 4 by means of a tubular inlet wire guide 6, which is fixed to the frame 5 of the straightener.
  • the straightening elements 3 and 4 are conveniently constituted by pairs of mutually opposite wheels, which are peripherally provided with a twin groove 3a, 4a meant to be engaged by said wires 2 to be straightened.
  • straightening wheels 3 are fixed, which are supported so that they can rotate on respective pivots 7, while on the opposite side there are provided moving straightening wheels 4, which are rotatably supported on corresponding pivots 8.
  • the position of the fixed wheels 3 can be adjusted individually in a direction which lies transversely to said advancement axis by means of screw elements 9 at respective slots 10 formed in the frame 5 (reference should be made in particular to figure 5).
  • the pivots 8 of the moving rollers 4 have an eccentric shape and are rigidly coupled to respective levers 11 which are suitable to be rotated through an angle and synchronously on a horizontal plane by means of a connecting rod 12, to which they are pivoted at additional vertical pivots 13.
  • the connecting rod 12 is in turn pivoted to a rocker 14, which is pivoted on a vertical axis to the frame 5 and is meant to be actuated by an actuator 15, for example a pneumatic cylinder.
  • the straightener 1 is provided with a device for tilting the plane of arrangement of the wires 2, which is generally designated by the reference numeral 20 and is arranged downstream of the straightening elements 3, 4 along said longitudinal advancement axis.
  • the tilting device 20 is provided with a first conical roller 21 and with a second conical roller 22, which are supported, so that they can rotate freely about vertical axes which are parallel to the axes of the straightening elements 3 and 4, on opposite sides with respect to said advancement axis of the wires 2, and are arranged at an appropriate distance from each other with mutually opposite tapers, so as to act respectively on said wires 2 with mutually opposite thrust components which are oblique with respect to said plane that is parallel to the axes of the straightening elements 3 and 4.
  • the taper of the first conical roller 21 is directed upward, while the second conical roller 22 is arranged outside the first roller 21, i.e., in a vertically raised position, and its taper is directed downward (see figure 2 in particular).
  • the conical rollers 21 and 22 are supported, so that they can rotate freely by means of rolling bearings 23 and 24, on respective pivots 25 and 26 which are mounted vertically on the frame 5; the pivots 25 and 26 have, for mounting on the frame 5, respective eccentric portions 25a, 26a which allow to adjust the mutual distance of the conical rollers 21 and 22.
  • the pivots 25, 26 are locked in the active position by corresponding screw means 27, 28.
  • the conical rollers 21, 22 are arranged on slightly offset vertical planes.
  • the first conical roller 21 is arranged on a plane which is shifted slightly backward with respect to the second roller 22 for overall dimension reasons.
  • a tubular outlet wire guide 30 Downstream of the conical rollers 21, 22, along the direction of advancement of the wires 2, there is provided a tubular outlet wire guide 30 which is stably fixed to the frame 5.
  • Said outlet wire guide 30 is internally provided with a through cavity 31 which has a converging shape and is contoured so as to form an outlet 32 which is elongated on a plane which lies obliquely with respect to the vertical plane that lies longitudinally to the straightener (see also figure 3).
  • the straightener has, upstream of the tilting device 20, an additional straightening element 16 which is aligned with the fixed wheels 3, as shown in detail in figure 6.
  • Said additional straightening element 16 is substantially constituted by a split roller, i.e., a roller formed by two side by side rollers 17 which are peripherally provided with a corresponding groove 17a and are rotatably supported by respective pivots 18.
  • the pivots 18 can be adjusted independently by means of corresponding screw elements 19.
  • the additional straightening element 16 allows to independently perform different straightenings of the wires 2 that enter the tilting device 20.
  • the wires 2 to be straightened are inserted, by means of the inlet wire guide 6, between the straightening elements 3 and 4, which rotate in mutually opposite directions, and advance along the preset longitudinal axis, so that they are superimposed along a vertical plane of arrangement, engaging the peripheral grooves 3a, 4a of said straightening elements 3 and 4.
  • the wires 2 engage the conical rollers 21, 22 of the tilting device 20.
  • the wires 2 are arranged, by means of the thrust of the conical rollers 21 and 22, on a plane which is oblique with respect to the vertical plane that lies longitudinally to the straightener.
  • the wires 2 then pass through the outlet wire guide 30, provided with an outlet 32 which is elongated on a plane which is likewise oblique with respect to said longitudinal vertical plane, so as to be preset for entering a subsequent straightener provided with straightening rollers having horizontal axes.
  • the described twin-wire straightener therefore achieves the aim of tilting the plane of arrangement of the wires that exit from said straightener without causing wear and without compromising the correct straightening of said wires.
  • the plane of arrangement of the wires is in fact tilted without friction by means of the pair of freely rotating conical rollers 21 and 22.
  • the described tilting device is very simple from the constructive and functional point of view and has low costs with respect to conventional devices in addition to being adjustable for the various wire diameters that can be treated.
  • Figures 7 and 8 illustrate a different embodiment of said device for tilting the plane of arrangement of the wires, which is provided with a first conical roller and with a second conical roller, designated again by the reference numerals 21 and 22 for the sake of clarity, which are arranged so as to have mutually opposite tapers.
  • the conical rollers 21 and 22 are supported so that they can rotate freely, by means of the corresponding rolling bearings 23 and 24, on the respective pivots 25 and 26, which are mounted vertically on the frame 5.
  • the pivot 25 of the first conical roller 21 has a fixed axis on the frame 5, while the pivot 26 of the second conical roller 22 is guided so that it can slide, by means of a bush 29, in a slot 40 formed on the frame 5; the slot 40 is arranged transversely to the wire advancement direction, substantially on the vertical plane of arrangement of the axes of the conical rollers 21 and 22.
  • a helical spring 41 is suitable to act elastically on the bush 29 of said pivot 26 and is accommodated in a corresponding seat 42, which is formed on the frame 5 and is aligned with the slot 40.
  • the spring 41 applies a pressure which is appropriately adjustable by means of an adjustment screw 43, which is locked in the active position by means of a nut 44.
  • the spring 41 pushes the movable conical roller 22 toward the fixed-axis conical roller 21, so as to elastically clamp the wires to be straightened between said rollers 21 and 22. In this manner, correct clamping pressure of the wires on the part of the rollers 21 and 22 is ensured. In particular, said clamping pressure of the rollers 21 and 22 adapts spontaneously to the different dimensions of the rods being treated, without requiring any adjustment.
  • both conical rollers 21 and 22 so that they can move in the above-described manner and be actuated by respective springs, mounted in mutually opposite positions, for clamping the wires being processed.
  • the conical rollers 21 and 22 may be peripherally provided with a respective pair of grooves 21a, 22a which are shaped for example so as to have a circular profile, in order to guide in an optimum manner the wires 2 in the rotation which is required to pass from the straightening elements which have horizontal axes to those which have vertical axes.
  • actuation means not shown, which are meant to positively and/or negatively move said rollers 21, 22 transversely to the wire advancement axis, along a corresponding slot 40.
  • said actuators can cooperate with said spring 41, which is meant to provide a controlled force for the elastic clamping of the wires.
  • the conical rollers 21, 22 can be kept in contact with the wires being treated only during a suitable insertion step and, viceversa, moved away from contact once wire insertion has been completed.
  • the conical rollers 21, 22 are prevented from being uselessly subjected to wear during normal operation, when their intervention is not required.
  • Said actuators can of course actuate both the approach of the conical rollers to the active position and their spacing into a disengagement position.
  • the materials used may be any according to requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)
  • Metal Extraction Processes (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Ropes Or Cables (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
EP97117690A 1997-03-13 1997-10-13 Twin-wire straightener for metallic materials in wire form and the like. Expired - Lifetime EP0864387B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBO970143 1997-03-13
IT97BO000143A IT1291259B1 (it) 1997-03-13 1997-03-13 Gruppo raddrizzante bifilare per materiali metallici in filo e simili.

Publications (2)

Publication Number Publication Date
EP0864387A1 EP0864387A1 (en) 1998-09-16
EP0864387B1 true EP0864387B1 (en) 2001-09-26

Family

ID=11342095

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97117690A Expired - Lifetime EP0864387B1 (en) 1997-03-13 1997-10-13 Twin-wire straightener for metallic materials in wire form and the like.

Country Status (5)

Country Link
EP (1) EP0864387B1 (it)
AT (1) ATE206082T1 (it)
DE (1) DE69706959T2 (it)
DK (1) DK0864387T3 (it)
IT (1) IT1291259B1 (it)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1299943B1 (it) * 1998-03-30 2000-04-04 Schnell Spa Metodo e apparecchiatura per la raddrizzatura di profilati metallici e simili.
CN101864681B (zh) * 2010-05-25 2011-09-21 玉溪玉杯金属制品有限公司 应力消除装置底座
CN101831817B (zh) * 2010-05-25 2011-09-21 玉溪玉杯金属制品有限公司 镀锌钢丝应力消除器支架
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
AT512898B1 (de) * 2012-08-03 2013-12-15 Evg Entwicklung Verwert Ges Richtrolleneinheit
CN102886469A (zh) * 2012-10-23 2013-01-23 建科机械（天津）股份有限公司 钢筋调直机的多根钢筋分线调直机构
CN102982897B (zh) * 2012-11-20 2015-10-28 无锡西玛梅达电工有限公司 矩形漆包线半硬化装置
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
CN103350130A (zh) * 2013-07-02 2013-10-16 无锡天惠塑机有限公司 预弯式自动控制调直装置
CN103611846B (zh) * 2013-11-26 2015-08-12 冯广建 旋压式钢筋自动调直机
CN103990744B (zh) * 2014-05-30 2016-03-02 冯广建 一种压合式钢筋调直机
CN104493013B (zh) * 2014-12-23 2017-05-03 冯广建 一种双线掌合式钢筋调直机构及双线掌合式钢筋调直机
CN105355321A (zh) * 2015-11-06 2016-02-24 镇江欧威达电气设备有限公司 一种导线拉伸硬化装置
CN108856574A (zh) * 2018-07-04 2018-11-23 湖州道场污水处理有限公司 一种铁黄铜焊丝生产用调直装置
CN109500298B (zh) * 2018-12-07 2023-05-23 中冶建筑研究总院有限公司 一种实验室用高强度圆钢矫直机及矫直方法
CN112279006A (zh) * 2020-11-02 2021-01-29 长沙衡开智能科技有限公司 一种层绕机移动排线机构
CN112355181B (zh) * 2020-12-17 2021-07-23 德清县杰创机械有限公司 一种自动除锈的高效钢筋折弯装置
CN114367556B (zh) * 2021-12-10 2024-03-26 浙江二十冶建设有限公司 一种钢结构建筑用钢管调直装置
CN115608883B (zh) * 2022-10-21 2023-11-07 徐州鸿润达电动车有限公司 一种电机用炭精弹簧生产用装置
CN116037812B (zh) * 2022-12-30 2024-04-09 青岛兴东机械有限公司 一体式环保型双根剥壳矫直送线机

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2746513A (en) * 1952-10-24 1956-05-22 Arthur L Kiesow Wire straightening and tensioning attachment for baling machine
US3595277A (en) * 1969-07-07 1971-07-27 Mckay Co Wire straightener
US4464919A (en) * 1981-12-09 1984-08-14 Labbe Robert A Wire straightener and method for straightening wire
JPS60221141A (ja) * 1984-04-13 1985-11-05 Showa Electric Wire & Cable Co Ltd 金属線材の成形加工装置
WO1993019865A1 (de) * 1992-04-03 1993-10-14 Evg Entwicklungs- U.Verwertungsgesellschaft M.B.H. Biegemaschine zum gleichzeitigen biegen zweier übereinanderliegender einzeldrähte
DE4311300C1 (de) * 1993-04-06 1994-02-24 Witels App Masch Albert Gmbh Richtapparat für drahtförmiges, mehrdrahtförmiges oder rohrförmiges Richtgut

Also Published As

Publication number Publication date
ATE206082T1 (de) 2001-10-15
ITBO970143A0 (it) 1997-03-13
DE69706959D1 (de) 2001-10-31
ITBO970143A1 (it) 1998-09-13
DK0864387T3 (da) 2001-11-19
IT1291259B1 (it) 1998-12-30
EP0864387A1 (en) 1998-09-16
DE69706959T2 (de) 2002-04-25

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