EP2177287B1 - Stützbackenanordnung zum gleitenden seitlichen Abstützen von stab- und rohrförmigen Werkstücken an Biegemaschinen - Google Patents

Stützbackenanordnung zum gleitenden seitlichen Abstützen von stab- und rohrförmigen Werkstücken an Biegemaschinen Download PDF

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Publication number
EP2177287B1
EP2177287B1 EP08018255A EP08018255A EP2177287B1 EP 2177287 B1 EP2177287 B1 EP 2177287B1 EP 08018255 A EP08018255 A EP 08018255A EP 08018255 A EP08018255 A EP 08018255A EP 2177287 B1 EP2177287 B1 EP 2177287B1
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EP
European Patent Office
Prior art keywords
bending
workpiece
support
support jaw
arrangement according
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
EP08018255A
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German (de)
English (en)
French (fr)
Other versions
EP2177287A3 (de
EP2177287A2 (de
Inventor
Jürgen Wolf
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.)
Wafios AG
Original Assignee
Wafios AG
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 Wafios AG filed Critical Wafios AG
Priority to AT08018255T priority Critical patent/ATE535323T1/de
Priority to EP08018255A priority patent/EP2177287B1/de
Priority to JP2009226826A priority patent/JP5114464B2/ja
Priority to US12/579,990 priority patent/US8359896B2/en
Priority to CN2009101797918A priority patent/CN101722220B/zh
Publication of EP2177287A2 publication Critical patent/EP2177287A2/de
Publication of EP2177287A3 publication Critical patent/EP2177287A3/de
Application granted granted Critical
Publication of EP2177287B1 publication Critical patent/EP2177287B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
    • 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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
    • B21D7/022—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment over a stationary forming member only

Definitions

  • the invention relates to a support jaw assembly for sliding lateral support of rod and tubular workpieces before their entry into the forming groove of a bending disc of a bending head of a bending machine, with two support jaws arranged on both sides of the longitudinal axis of the workpiece to be machined and each facing with a workpiece Forming groove are provided for lateral abutment on this, each support jaw guided longitudinally displaceable on a guide block and can be moved by an associated drive means from an opposite to the transport direction of the workpiece extended end position, in which the support jaws the workpiece in a region of its tangential inlet into the forming groove the bending disc is supported to slide laterally to a point at a predetermined distance from this.
  • Such an arrangement shows the DE 201 18 444 U1 , where there is provided a support jaw, which can be moved along the tubular body and perpendicular to this.
  • this known jaw assembly can only in the case of a one-sided bending of the tubular workpiece can be used, since it allows only on one side support against the bending forces.
  • a device by means of which the workpiece to be machined can be bent right and left, is from the WO 2004/000479 A1 known.
  • a support jaws applied in which case two such support jaws, each for a bending direction, are provided, each having a forming groove for abutment against a side of the workpiece ,
  • the forming grooves on both support jaws, as well as on the bending disc are arranged at different axial height.
  • the swivel arm must be brought into a swivel position rotated by 180 ° so that it can work together on the opposite side of the bending head with the other support jaws present there.
  • This known bending machine is relatively complicated in construction, where the support jaws there must be moved both in the longitudinal direction of the workpiece to be machined, as well as perpendicular to its longitudinal axis.
  • the shape of grooves in the two mold jaws and the respective associated forming grooves on the bending disc at different heights, which also requires a change in the altitude of the overall arrangement relative to the supplied strand-like workpiece when switching the bending direction.
  • the present invention seeks to propose a support jaw assembly that can be used for both right as well as left-hand bending, with a simple conversion and an overall uncomplicated structure is given.
  • a support jaw assembly of the type mentioned in that the two support jaws are always slidably against the side of the workpiece, each support jaw is mounted on a holder on a longitudinally displaceable guided on the guide block support bar, which is displaceable by the associated drive means, wherein the two support strips are driven by the drive means such that when one of the support jaws is in its extended end position, the other support jaws assumes its retracted starting position.
  • the support jaw assembly according to the invention initially has a comparatively simple structural design, in which for changing the bending direction essentially only the generation of a lateral offset of the bending head relative to the longitudinal axis of the workpiece to be machined, for example by a method of bending head to make.
  • the arrangement of a plurality of mold grooves on the bending disc, axially offset from one another, is just as unnecessary as a lateral movability of the support jaws relative to the workpiece.
  • both support bars can be connected to a common drive means by which they can be moved individually or together in opposite directions, what Ober a suitable lever mechanism, counter-rotating spindle drives o.ä. can be realized.
  • each support bar is particularly preferably connected to its own drive device, preferably to a pneumatic cylinder or to a servo drive.
  • the drive device (s) are (are) further connected to a central control, by which the adjustment movements are controlled when changing the bending directions.
  • the support jaws can either be used so that the supporting jaws used for supporting in its use from the starting position transferred immediately into its extended end position and is held immobile during the bending process in this. Equally, however, it is also possible to provide what is easily realizable within the scope of a program control of the drive device (s) that the respectively used support jaw is moved in contact with the workpiece during the bending process until it has reached its extended end position or even over this one piece is continued.
  • each support jaws made of a hard plastic, in particular made of polyamide, which can be achieved in a relative movement between the workpiece and the support jaws particularly low frictional forces.
  • the support jaw assembly according to the invention can preferably be arranged so that the support jaws, their brackets, the support strips, the guide blocks and the drive means are provided symmetrically to the workpiece longitudinal axis, which can be achieved in total a type of two-part and axially movable workpiece guide.
  • the device according to the invention is suitable for the machining of rod-shaped or tubular workpieces, in particular for tubular workpieces from the coil. Moreover, it reliably prevents unwanted and unclean bending, buckling, bulging or the like of the workpiece to be treated, so that only the actually desired deformation of the workpiece at the bending head is permitted.
  • each support jaw is detachably fastened to the associated support strip and is preferably position-adjustable in the direction of the workpiece to be machined.
  • each support jaw is interchangeably mounted on the support carrying it, and is in particular also advantageously arranged in a positionally adjustable manner in the direction of the workpiece to be machined and in its vertical position.
  • each holder is preferably associated with an adjusting device for the support jaws, by means of which this is fine adjustable relative to the holder in the direction perpendicular to the longitudinal axis of the support bar and in its altitude.
  • any suitably suitable adjustment can be used, but particularly preferably a setting by means of one or more adjusting screws, in particular with a fine thread, can be provided.
  • Each support bar can be guided in a longitudinally displaceable manner on the guide block assigned to it in any suitable manner. Particularly preferred, however, each support bar is mounted by means of a recirculating ball guide or by means of a dovetail guide to the respective associated guide block.
  • a further preferred embodiment of the invention also consists in that the support jaw used in each case during a bending direction is moved together with the workpiece until it reaches its extended end position during the bending process.
  • the support jaw assembly according to the invention is formed so that all its parts are mounted on a common base plate or a common base support to form a unit for installation in a bending machine, whereby a subsequent equipment of a bending machine with a support jaw assembly according to the invention can be made quickly.
  • the invention also includes a bending machine for bending left and right of rod and tubular workpieces by means of a laterally displaceable to the longitudinal axis of the workpiece bending head, which is provided with a support jaw assembly according to the invention with one of the abovementioned embodiments.
  • Fig. 1 shows an oblique perspective view of a bending machine 1 for bending a rod and tubular workpiece 2 withdrawn endlessly from the coil.
  • the bending machine 1 has a machine frame 3, which is provided on its upper side with a straightening unit 4 and with a rotatable feeder 5.
  • the workpiece 2 drawn endlessly from the coil is removed from the rear side of the bending machine 1 (in FIG Fig. 1 : From the right) initially supplied to the straightening unit 4, passes through this in the rotatable feeder 5, from which it exits the front and then fed to the front side of the bending machine 1 a bending head 6 with a rotatable bending disc 7 for carrying out the desired bends.
  • the bending disk 7 represents a bending template which can be rotated in both directions of rotation about a rotation axis 8 lying in a vertical direction and perpendicular to the longitudinal axis of the workpiece 2.
  • this is provided with a shaping groove 9, in which the workpiece 2 tangentially enters upon reaching the bending disc 7 and remains during the bending operation.
  • a bending finger 10 is further attached, which cooperates with the bending disc 7 for performing the bending operation and with this about the rotation axis 8 together (or independently) is pivotable.
  • the workpiece 2 is arranged, which is bent upon rotation of the bending finger 10 and bending disc 7 around the circumference of the latter according to the circular shape formed by this.
  • the bending head 6 can be moved, as shown by the arrows A and B, both in the vertical and in the transverse direction (that is, perpendicularly to the longitudinal axis of the workpiece 2).
  • the bending head 6 is preferably of a construction as shown in the EP 1 591 174 B1 , z. B. Fig. 13, shown in detail.
  • Fig. 2 shows, the workpiece 2 passes before reaching the bending head 6 through a support jaw assembly therethrough.
  • This consists of two support jaws 11, 12, which are arranged on both sides of the workpiece 2 and each of which is mounted on a bracket 13 and 14, which in turn is mounted on a support bar 15 and 16 via screws 17.
  • the screws 17 extend through slots in a respective laterally projecting support flange of the holder 13 and 14, whereby the possibility exists, the respective holder 13 and 14 in their attachment to the corresponding support bar 15 and 16 relative to this and in one direction Spend perpendicular to the longitudinal axis of the workpiece 2 in a desired position and to fix in this.
  • each support jaws 11, 12 is mounted on its associated bracket 13 and 14 by means of screws 18, wherein a device not shown in the figures is provided, by means of which each support jaws 11, 12 in turn also in the direction perpendicular to the workpiece 2 back in Its location can be fine tuned.
  • the screws 18 each z. B. also in slightly elongated mounting holes of the associated support flange to allow a fine adjustment of the respective support jaw 11, 12 relative to the workpiece 2.
  • a device for adjusting the height of the support jaws 11, 12 is provided, which in the Fig. 1 and 2 but not shown.
  • Each support bar 15, 16 is seated on an associated guide block 19 or 20 and is slidably mounted on this in each case via a guide rail 21 in the longitudinal direction of the workpiece 2, wherein the guide rail 21 is mounted on the underside of the support bar 15 and 16 and in a corresponding Dovetail groove in the associated guide block 19 and 20 engages, so that a total of one dovetail guide is present.
  • Each support bar 15, 16 is connected at its side facing away from the bending head 6 via a push rod 22 with a drive device in the form of a pneumatic adjusting cylinder 23, 24 which in turn about a pivot axis perpendicular to the longitudinal axis of the workpiece 2 and transverse to a retaining flange 25 and 26 is articulated.
  • the pneumatic cylinders 23, 24 are, not shown in the figures, connected in a suitable manner to a central control device, by means of which they z. B. can be controlled by a program control.
  • the guide blocks 19 and 20 are, like the support flanges 25, 26 for the pneumatic cylinder 23, 24 mounted on a base plate 27, whereby the whole support jaw assembly together with its drive with this base plate 27 forms a self-contained unit, in a suitable manner on the frame. 3 the bending machine 1 can be attached, such as from the Fig. 1 and 2 removable.
  • the support bars 15 and 16, their respective push rod 22 and the associated pneumatic cylinder 23, 24 each extend in a direction parallel to the longitudinal direction of the workpiece 2 alignment, wherein by the pneumatic cylinder 23 and 24, the support bars 15 and 16 with the respective holders attached to them 13 and 14 and the respective support jaws 11, 12 in a direction parallel to the longitudinal axis of the workpiece 2 from a retracted starting position, as shown in FIGS Fig.
  • each support jaws 11, 12 Removable while each support jaws 11, 12 is removed from the bending disc 7, be transferred to an extended end position, in which the extended support jaws 11 and 12 with its bending head 6 facing front to the point of the tangential inlet of the workpiece 2 in the Formnut 9 of the bending disc 7 is advanced and thereby lies directly next to the bending finger 10 of the bending head 6.
  • the workpiece 2 engaging between the two in the forming groove 9 of the bending disk 7 is provided with the desired bend around the bending disk 7, the workpiece 2 being continuously fed in a region between the position its tangential inlet into the forming groove 9 and, seen in the transport direction of the workpiece 2, lying in front of this inlet point (according to the length of the respective support jaw 11 and 12 in the longitudinal direction of the workpiece 2 seen) from the support jaws 11 and 12 in the attached there Formnut 28 is supported.
  • This support prevents just in the area immediately before the inlet of the workpiece 2 in the forming groove 9, the occurrence of cracks, faults o. ⁇ . On the workpiece 2, which would otherwise occur due to the bending forces occurring during the bending process.
  • the arrangements each consisting of a support jaws 11 and 12, the associated bracket 13 and 14, the respective support bar 15 and 16, the associated guide block 19 and 20, the respective push rod 22 and the connected pneumatic cylinder 23 and 24 respectively , are mounted on the frame 3 of the bending machine 1, that each of them is located on one side of the workpiece 2, both arrangements, as seen relative to the workpiece 2, are mounted in their retracted initial position symmetrical to each other.
  • Fig. 3 now shows a top view of the in Fig. 2 shown portion of the bending machine 1, wherein from this illustration, the arrangement of the support jaws 11 and 12 with the supporting elements 13 and 14, 15 and 16, and the respective push rods 22 and the respectively associated pneumatic cylinder 23 and 24 on both sides of the workpiece. 2 is apparent.
  • the presentation of the Fig. 3 shows the case of a right bend, which in the position in Fig. 3 has not yet begun, which is why the workpiece 2 still protrudes beyond the bending head 6 and is bent only by a subsequent movement of the bending finger 10 and the bending disc 7.
  • the support jaws 12 has been spent on the pneumatic cylinder 24 in its extended end position, in which he how Fig. 3 shows, is arranged directly beside the bending finger 10 and spent with its front end portion up to the point of the tangential inlet of the workpiece 2 in the guide groove 9 of the bending disc 7. From here, the support jaw 12 supports the workpiece 2 on its opposite side of the bending disc 7 over a longitudinal section away, which lies in front of the tangential inlet point and the length of the support jaw 12 (seen in the longitudinal direction of the workpiece 2).
  • Fig. 3 shows, the other holding jaws 11 is spent on the him driving the pneumatic cylinder 23 in its retracted position, in which he also abuts on the other side against the workpiece 2, but the same from the bending head 6 and the bending disc 7 is removed.
  • Fig. 4 now shows the same section of the bending machine 1, as in Fig. 3 is shown, but here in the case of left turn.
  • Fig. 4 how out Fig. 4 compared to Fig. 3 can be taken is in Fig. 4 the bending head 6 with the bracket supporting him side of the workpiece 2 so that the workpiece 2 now on the compared to Fig. 3 opposite side of the bending disc 7 is located. If a change from right to left bending or vice versa during the treatment of the workpiece 2 are made, to this change in position of the bending head 6, however, not only its lateral process in the direction of travel B (see. Fig. 1 and Fig. 2 ), but also a lowering of the bending head 6 in the direction A (see. Fig. 1 and Fig. 2 ) to perform under the workpiece 2, the lateral movement in the direction B and then brought back up to the desired height position.
  • the support jaws 11 and 12 can perform different functions in the order shown:

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP08018255A 2008-10-17 2008-10-17 Stützbackenanordnung zum gleitenden seitlichen Abstützen von stab- und rohrförmigen Werkstücken an Biegemaschinen Active EP2177287B1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT08018255T ATE535323T1 (de) 2008-10-17 2008-10-17 Stützbackenanordnung zum gleitenden seitlichen abstützen von stab- und rohrförmigen werkstücken an biegemaschinen
EP08018255A EP2177287B1 (de) 2008-10-17 2008-10-17 Stützbackenanordnung zum gleitenden seitlichen Abstützen von stab- und rohrförmigen Werkstücken an Biegemaschinen
JP2009226826A JP5114464B2 (ja) 2008-10-17 2009-09-30 曲げ加工機におけるロッド形状及び管状ワークの摺動横方向支持用支持ジョー構造
US12/579,990 US8359896B2 (en) 2008-10-17 2009-10-15 Support jaw arrangement for sliding lateral support of rod-shaped and tubular workpieces in bending machines
CN2009101797918A CN101722220B (zh) 2008-10-17 2009-10-19 在弯曲机中滑动侧向支撑杆形管状工件的支撑爪装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08018255A EP2177287B1 (de) 2008-10-17 2008-10-17 Stützbackenanordnung zum gleitenden seitlichen Abstützen von stab- und rohrförmigen Werkstücken an Biegemaschinen

Publications (3)

Publication Number Publication Date
EP2177287A2 EP2177287A2 (de) 2010-04-21
EP2177287A3 EP2177287A3 (de) 2011-05-11
EP2177287B1 true EP2177287B1 (de) 2011-11-30

Family

ID=41507850

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08018255A Active EP2177287B1 (de) 2008-10-17 2008-10-17 Stützbackenanordnung zum gleitenden seitlichen Abstützen von stab- und rohrförmigen Werkstücken an Biegemaschinen

Country Status (5)

Country Link
US (1) US8359896B2 (ja)
EP (1) EP2177287B1 (ja)
JP (1) JP5114464B2 (ja)
CN (1) CN101722220B (ja)
AT (1) ATE535323T1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012102057A1 (de) * 2012-03-12 2013-09-12 Elcede Gmbh Biegeeinheit
CN111872689A (zh) * 2020-07-07 2020-11-03 上海友升铝业有限公司 双边拉伸式拉弯设备及其拉弯方法

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CN101966548A (zh) * 2010-11-03 2011-02-09 天津市建科机械制造有限公司 具有夹紧步进机构的钢筋自动弯曲机
CN102009108A (zh) * 2010-11-17 2011-04-13 天津市建科机械制造有限公司 钢筋自动弯箍机上的夹紧回送弯曲机构
CN102151730B (zh) * 2010-12-09 2013-01-30 中山市奥美森工业有限公司 长u弯管机的折弯装置的位置切换部件
ITUD20110061A1 (it) * 2011-04-18 2012-10-19 Piegatrici Macch Elettr Macchina piegatrice di barre metalliche, quali tondi per armatura o simili
TWI424893B (zh) * 2011-06-15 2014-02-01 Chiao Sheng Machinery Co Ltd 條狀物彎曲成形加工機
CN102716952A (zh) * 2012-06-28 2012-10-10 常熟市电力机具有限公司 弯管机
ITMI20131272A1 (it) * 2013-07-29 2015-01-30 Crippa Spa Macchina per curvare tubi con calandra posteriore e relativo procedimento di calandratura.
CN103706724B (zh) * 2013-12-20 2015-09-30 南京迈欧机械制造有限公司 一种可伸缩直管自动形成装置
CN105013884A (zh) * 2015-08-20 2015-11-04 江苏一机机械科技有限公司 高精度液压折弯机
ITUB20153259A1 (it) * 2015-08-27 2017-02-27 M E P Macch Elettroniche Piegatrici Spa Macchina combinata per lavorare vergelle e relativo procedimento di lavorazione
EP3238850B1 (en) * 2016-04-27 2019-10-23 Advanced Orthodontic Solutions Wire bending machine
DE102017117979A1 (de) 2017-08-08 2019-02-14 Wafios Aktiengesellschaft Biegemaschine zum Biegen von stab- oder rohrförmigen Werkstücken
CN108461440B (zh) * 2018-03-30 2024-04-05 上海新创达半导体设备技术有限公司 一种晶圆对中装置及方法
US11351587B2 (en) 2020-03-31 2022-06-07 Hsin-Po Huang Single bending device for continuous three-dimensional bending
CN112091022B (zh) * 2020-09-15 2024-01-05 戚晓芳 一种石油管道弯管用辅助机构

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012102057A1 (de) * 2012-03-12 2013-09-12 Elcede Gmbh Biegeeinheit
CN111872689A (zh) * 2020-07-07 2020-11-03 上海友升铝业有限公司 双边拉伸式拉弯设备及其拉弯方法

Also Published As

Publication number Publication date
CN101722220B (zh) 2012-10-24
US20100095732A1 (en) 2010-04-22
EP2177287A3 (de) 2011-05-11
US8359896B2 (en) 2013-01-29
EP2177287A2 (de) 2010-04-21
JP5114464B2 (ja) 2013-01-09
CN101722220A (zh) 2010-06-09
ATE535323T1 (de) 2011-12-15
JP2010094736A (ja) 2010-04-30

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