EP1787739B1 - Apparatus for forming spiral steel bars - Google Patents

Apparatus for forming spiral steel bars Download PDF

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Publication number
EP1787739B1
EP1787739B1 EP06009233A EP06009233A EP1787739B1 EP 1787739 B1 EP1787739 B1 EP 1787739B1 EP 06009233 A EP06009233 A EP 06009233A EP 06009233 A EP06009233 A EP 06009233A EP 1787739 B1 EP1787739 B1 EP 1787739B1
Authority
EP
European Patent Office
Prior art keywords
bar
steel bar
spiral steel
driving
bending
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.)
Active
Application number
EP06009233A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1787739A1 (en
Inventor
Samuel Runhorn Pretech Engineering Co. Ltd. Yin
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.)
Runhorn Pretech Engineering Co Ltd
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Runhorn Pretech Engineering Co Ltd
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Publication date
Application filed by Runhorn Pretech Engineering Co Ltd filed Critical Runhorn Pretech Engineering Co Ltd
Publication of EP1787739A1 publication Critical patent/EP1787739A1/en
Application granted granted Critical
Publication of EP1787739B1 publication Critical patent/EP1787739B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F27/00—Making wire network, i.e. wire nets
    • B21F27/12—Making special types or portions of network by methods or means specially adapted therefor
    • B21F27/121—Making special types or portions of network by methods or means specially adapted therefor of tubular form, e.g. as reinforcements for pipes or pillars
    • 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
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/06—Bending into helical or spiral form; Forming a succession of return bends, e.g. serpentine form
    • 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
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/10—Bending specially adapted to produce specific articles, e.g. leaf springs
    • B21D11/12—Bending specially adapted to produce specific articles, e.g. leaf springs the articles being reinforcements for concrete
    • 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

Definitions

  • the present invention generally relates to a spiral steel bar forming apparatus and a spiral steel bar forming method. More particularly, the present invention relates to a spiral steel bar forming apparatus and a spiral steel bar forming method for forming spiral steel bars used in civil engineering field.
  • stirrups are tied to main steel bar individually and gradually.
  • spiral stirrups having intervals are increasingly weighted and used by the structure design engineers.
  • So-called spiral stirrups are spiral steel bars used with main steel bars, wherein a steel bar is bended into a continuous spiral to form the spiral steel bar.
  • the spiral stirrups are used for positioning the main steel bars and providing shear strength.
  • the cross-section of the spiral steel bar may be adjusted according to the practical design, commonly is in rectangular or circular shape.
  • spiral steel bars may also be used as main structure frames that provide structure strength in some special structure design.
  • Spiral steel bars are conventionally formed by a steel bar bender, which gradually bends a straight steel bar to a spiral steel bar without intervals. Subsequently a machine dissociates the front and rear of the spiral steel bar to generate intervals. The efficiency and interval control of the forming process are both improvable.
  • Debry Maurice FR-A-1 590 141 disclosed conventional mechanism for producing an indented bar (see preamble of claim 1).
  • This conventional mechanism includes bar driving device, a bending device and at least one helical ramp.
  • the bar driving device conveys a bar into the bending device, and the bending device rotates to bend the bar 180 degrees about an axis.
  • the bending device also compels the bended part of the bar to move along the helical ramp and therefore generate a deformation.
  • This conventional mechanism restricts the rotation angle of the bending device to accommodate the structure of the helical ramp.
  • the generated deformation of the bar is also fixed and not adjustable.
  • the spiral steel bar forming apparatus of the present invention comprises a bar bending device, a bar driving device and an interval generating device.
  • the bar driving device and the interval generating device are disposed corresponding to the bar input side and the bar output side of the bar bending device relatively.
  • the bar bending device further includes a first axis and a bending part.
  • the bending part is movable corresponding to the first axis, wherein the bending part is rotatable about the first axis in the preferred embodiment.
  • the bar driving device is disposed corresponding to the bar input side of the bar bending device.
  • the interval generating device is disposed corresponding to the outside of the bending device, wherein the interval generating device is movable along the interval generating direction and adapted to push the steel bar output from the bar bending device to generate interval.
  • the spiral steel bar forming device further comprises a straightening device, a turning device, and a supporting device.
  • the straightening device is preferably disposed between the bar driving device and the bar bending device, wherein the straightening device straightens the steel bar before it enters the bar bending device.
  • the turning device includes a second axis and is disposed corresponding to an outside of the bar bending device. The turning device is turnable corresponding to the second axis and overturns the spiral steel bar in accordance with a movement of the bar bending device.
  • a supporting device is disposed abreast of the turning device. The supporting device supports the spiral steel bar overturned by the turning device.
  • the supporting device includes a spiral steel bar driving device.
  • the spiral steel bar driving device is movably disposed on the supporting device for driving the spiral steel bar toward the turning device.
  • the spiral steel bar driving device simultaneously drives the spiral steel bar toward the turning device in accordance with the driving of the steel bar.
  • the spiral steel bar forming method of the present invention comprises driving the steel bar, bending the steel bar in a predetermined position by using a bar bending device, and pushing the steel bar output from the bar bending device along the interval generating direction to generate an interval.
  • the driving of the steel bar is simultaneous in accordance with the driving of the formed spiral steel bar on the supporting device.
  • the bending step includes synchronously turning the formed spiral steel bar.
  • the present invention provides a spiral steel bar forming apparatus and a spiral steel bar forming method.
  • the formed spiral steel bars are used as stirrups of a construction structure.
  • the formed spiral steel bars may be used as other units of a construction structure.
  • the spiral steel bar forming apparatus comprises a bar bending device 200, a bar driving device 300, and an interval generating device 400.
  • the bar bending device 200 includes a bar input side 201 and a bar output side 203.
  • the bar driving device 300 is disposed corresponding to the bar input side 201 of the bar bending device 200.
  • the interval generating device 400 is disposed corresponding to the bar output side 203 of the bar bending device 200.
  • the meaning of "disposed corresponding to" includes but doesn't limit to direct contact and alignment positioning. It also includes the sequence relation for processing the steel bar 110.
  • the bar bending device 200 further includes a first axis 210 and a bending part 230.
  • the bending part 230 is rotatable about the first axis 210 to bend the steel bar 110.
  • the bending part 230 can move in different ways corresponding to the first axis 210, such as moving along the vertical direction.
  • the bar bending device 200 bends the steel bar 110 to 90 degrees to form a spiral steel bar 130 having a rectangular cross section shape.
  • the bar bending device 200 bends the steel bar 110 to different degrees to form spiral steel bars with demanded cross section shape.
  • the bar driving device 300 drives the steel bar 110 into the bar input side 201 of the bar bending device 200.
  • the bar driving device 300 includes a driving wheel 310 and a driving motor 330.
  • the driving motor 330 provides a driving force. It is acceptable in another embodiment to dispose the driving motor of the bar driving device 300 in the center of the steel bar coil.
  • the interval generating device 400 includes a block with a plane.
  • the interval generating device 400 is disposed corresponding to the bar output side 203 of the bar bending device 200 and is movable along the interval generating direction 410.
  • the interval generating device 400 pushes the steel bar 110 output from the bar output side 203 of the bar bending device 200 along the interval generating direction 410 to generate appropriate intervals.
  • the cross-section shape of interval generating device may be changed to equally distribute the pushing force.
  • the cross-section shape of interval generating device 400 is a polygon having a nick.
  • the interval generating direction 410 is preferably perpendicular to the driving direction of the steel bar 110. In another embodiment, however, the interval generating direction 410 meets the driving direction of the steel bar 110 at different angles to generate different forms and intervals.
  • the spiral steel bar forming apparatus further comprises a straightening device 600, a turning device 700, and a supporting device 800.
  • the straightening device 600 is preferably disposed between the bar driving device 300 and the bar bending device 200. In another embodiment, however, it is also appropriate to dispose the straightening device 600 corresponding to a front end of the bar driving device 300.
  • the straightening device 600 includes vertical straightening part and horizontal straightening part which respectively straighten the steel bar 110 in vertical and horizontal directions by using the rollers.
  • the turning device 700 includes a second axis 710 and is disposed corresponding to an outside of the bar bending device 200.
  • the turning device 700 is turnable corresponding to the second axis 710 and overturns the spiral steel bar 130 in accordance with a movement of the bar bending device 200.
  • the turning device 700 overturns the rectangular cross-section shaped spiral steel bar 130 to 90 degrees each time.
  • the turning device 700 overturns the spiral steel bars to different degrees in accordance with the different cross-section shapes of the spiral steel bars.
  • the second axis 710 is along a side of the turning device 700 and parallel to the first axis 210.
  • the turning device 700 extends along the interval generating direction 410.
  • the turning device 700 further includes a positioning device 730 movably connecting to the turning device 700.
  • the positioning device 730 contacts and positions the spiral steel bar 130 when the turning device 700 overturns the spiral steel bar 130.
  • the positioning device 730 includes a positioning base 731 and a positioning rod 733.
  • the positioning base 731 is movably disposed on the turning device 700 and extends along the interval generating direction 410.
  • the positioning rod 733 is rotatably disposed on the positioning base 731.
  • the positioning base 731 moves to adjoin the spiral steel bar 130.
  • the positioning rod 733 rotates to restrict the spiral steel bar 130.
  • the quantity and the arrangement of the positioning rod 733 may be modified in accordance with the real demand.
  • a supporting device 800 is disposed abreast of the turning device 700.
  • the supporting device 800 supports the spiral steel bar 130 overturned by the turning device 700.
  • the supporting device 800 includes a supporting carriage 810 and a spiral steel bar driving device 830.
  • the spiral steel bar driving device 830 is movably disposed on the supporting carriage 810 for driving the spiral steel bar 110 toward the turning device 700.
  • the spiral steel bar driving device 830 simultaneously drives the spiral steel bar 130 toward the turning device 700 in accordance with the driving of the steel bar 110.
  • the spiral steel bar driving device 830 further includes a driving plate 831 which is perpendicular to the supporting carriage 810. The driving plate 831 is capable of moving toward the turning device 700.
  • FIGS. 3a to 3f show the cooperative movement of the bar bending device 200 and the interval generating device 400.
  • the spiral steel bar forming method of the present invention comprises driving the steel bar 110, followed by bending the steel bar 110 in a predetermined position by using a bar bending device 200 as shown in FIG. 3b .
  • the bending part 230 of the bending device 200 rotates about the first axis 210 to bend the steel bar 110.
  • the interval generating device 400 pushes the steel bar 110 outward from the bar bending device 200 along the interval generating direction 410 to generate an interval.
  • the interval generating device 400 pushes the bended proportion of the steel bar 110 to generate a displacement on a vertical plane.
  • a displacement on a horizontal plane is generated if the interval generating device 400 pushes the steel bar 110 in the period between finished driving step and unfinished bending step of the steel bar 110.
  • the above illustration shows the interval generating step may be arranged before or after the driving step and the bending step in accordance with the desired form of the generated interval.
  • FIGS. 3c to 3f repeat the driving step, the bending step and the interval generating step to form a rectangular cross-section shaped spiral steel bar.
  • different cross-section shaped spiral steel bar can be formed by adjusting the bending angle of the bar bending device 200.
  • FIGS. 4a to 4d show the movement of the turning device 700.
  • the spiral steel bar forming method of the present invention further comprises moving the positioning base 731 next to the spiral steel bar 130 and rotating the positioning rod 733 to position the spiral steel bar 130.
  • the spiral steel bar driving device 830 is now in the rear side of the supporting carriage 810.
  • the turning device 700 turns corresponding to the second axis 710 to overturn the formed spiral steel bar 130.
  • the turning step and the bending step of the bar bending device 200 are synchronously proceeded.
  • the positioning rod 733 rotates to release the spiral steel bar 130.
  • the spiral steel bar driving device 830 now drives forward to contact the overturned spiral steel bar 130. It is notable that the releasing of the positioning rod 733 is not necessarily synchronous with the driving of the spiral steel bar driving device 830. However, it is benefit to shorten the time of the total process if the releasing of the positioning rod 733 is synchronous with the driving of the spiral steel bar driving device 830.
  • the turning device 700 turns corresponding to the second axis 710 to return to its original position.
  • the spiral steel bar driving device 830 drives the spiral steel bar 130 in accordance with the driving of the steel bar 110.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Heat Treatment Of Steel (AREA)
EP06009233A 2005-11-22 2006-05-04 Apparatus for forming spiral steel bars Active EP1787739B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2005101239097A CN100450661C (zh) 2005-11-22 2005-11-22 螺旋钢筋成形装置及方法

Publications (2)

Publication Number Publication Date
EP1787739A1 EP1787739A1 (en) 2007-05-23
EP1787739B1 true EP1787739B1 (en) 2008-12-03

Family

ID=36636562

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06009233A Active EP1787739B1 (en) 2005-11-22 2006-05-04 Apparatus for forming spiral steel bars

Country Status (5)

Country Link
EP (1) EP1787739B1 (pt)
CN (1) CN100450661C (pt)
AT (1) ATE416049T1 (pt)
DE (1) DE602006003985D1 (pt)
PT (1) PT1787739E (pt)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101670412B (zh) * 2009-10-19 2014-09-03 无锡荡口通和纺织机械厂 一种箍筋成型机的送料机构
CN101947615B (zh) * 2010-08-10 2012-05-23 刘国政 建筑用多边螺旋箍筋刚柔挤压缠绕成形装置
IT1403849B1 (it) * 2011-02-04 2013-11-08 Galluccio Metodo e apparecchiatura per realizzare armature per cemento armato
CN103639331B (zh) * 2013-11-20 2015-12-09 江苏天舜金属材料集团有限公司 一种钢筋网片编织机组
CN107931486B (zh) * 2017-11-22 2019-01-18 徐州华通浮动油封科技有限公司 一种螺旋钢筋成形装置
CN111889549B (zh) * 2020-07-15 2022-11-22 长沙中扬钢结构有限公司 一种钢棒螺纹钢制作装置
CN114472748B (zh) * 2022-01-26 2024-07-02 吉林建筑大学 一种建筑施工用节能式钢筋加工机构

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1590141A (pt) * 1968-08-06 1970-04-13
EP0630297A1 (en) * 1992-05-29 1994-12-28 Panaghiotis A. Anagnostopoulos Method and mechanism for the production of upwinding spiral wire products
CN2235472Y (zh) * 1995-09-21 1996-09-18 孙龙骧 万能螺旋钢箍机
GR1002855B (el) * 1997-02-14 1998-02-06 ������� �������� ������� ��� ��������� �����������.. Μεθοδος και μηχανη παραγωγης συνεχομενου σπιραλ τυχουσης κυρτης πολυγωνικης σταθερης διατομης απο συρμα ή μπετοβεργα ή μεταλλικο σωληνα
CN2472839Y (zh) * 2001-03-13 2002-01-23 孙龙骧 自动化多功能钢箍机
ITUD20010055A1 (it) * 2001-03-19 2002-09-19 Piegatrici Macch Elettr Dispositivo e procedimento per il completamento di gabbie di armatura
GR1004760B (el) * 2003-11-26 2004-12-16 "���������������������������������-������������������������������"�����.�.�"���������.�."�� Μηχανισμοσακαμψησαβεργασασιδηρουαμπετονατεσσαρωνακατευθυνσεωναμεαδυνατοτηταακοπησαεμπροσακαιαπισωαακρουαα
CN2678795Y (zh) * 2004-02-24 2005-02-16 天津市建科机械制造有限公司 钢筋矫直剪切弯曲连续生产装置

Also Published As

Publication number Publication date
ATE416049T1 (de) 2008-12-15
EP1787739A1 (en) 2007-05-23
CN100450661C (zh) 2009-01-14
CN1970190A (zh) 2007-05-30
DE602006003985D1 (de) 2009-01-15
PT1787739E (pt) 2009-03-10

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