EP1166911B1 - Biegevorrichtung für Rohre und dergleichen - Google Patents

Biegevorrichtung für Rohre und dergleichen Download PDF

Info

Publication number
EP1166911B1
EP1166911B1 EP01113615A EP01113615A EP1166911B1 EP 1166911 B1 EP1166911 B1 EP 1166911B1 EP 01113615 A EP01113615 A EP 01113615A EP 01113615 A EP01113615 A EP 01113615A EP 1166911 B1 EP1166911 B1 EP 1166911B1
Authority
EP
European Patent Office
Prior art keywords
bending
tube
frame
advancement
bent
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
EP01113615A
Other languages
English (en)
French (fr)
Other versions
EP1166911A3 (de
EP1166911A2 (de
Inventor
Claudio Bragato
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.)
Star-Bend Srl
Original Assignee
Star-Bend Srl
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 Star-Bend Srl filed Critical Star-Bend Srl
Publication of EP1166911A2 publication Critical patent/EP1166911A2/de
Publication of EP1166911A3 publication Critical patent/EP1166911A3/de
Application granted granted Critical
Publication of EP1166911B1 publication Critical patent/EP1166911B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B21D9/00—Bending tubes using mandrels or the like
    • B21D9/05—Bending tubes using mandrels or the like co-operating with forming members
    • B21D9/07—Bending tubes using mandrels or the like co-operating with forming members with one or more swinging forming members engaging tube ends only
    • B21D9/073—Bending tubes using mandrels or the like co-operating with forming members with one or more swinging forming members engaging tube ends only with one swinging forming member
    • 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
    • B21D7/024—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member

Definitions

  • the present invention relates to a machine for bending tubes and the like, particularly by calendering.
  • tube bending machines are generally constituted by a supporting frame on which a mandrel supporting head can move for the advancement of the tube to be bent, inside which there may be a core being retained by a core support arranged correspondingly at one end of the frame.
  • a bending wheel At the other end of the frame there is a bending wheel at which there is a bending arm which can move coaxially to the wheel and allows to perform bending.
  • a jaw-like element which retains the tube and which in practice causes the advancement of the tube during the rotation of the bending arm about the bending wheel through an angle that corresponds to the bending angle to be provided.
  • a bending roller which engages the tube, which is advanced with respect to the wheel by a preset extent and is retained by the mandrel supporting head during the bending step, which is performed by means of the rotation of the arm about the wheel, which in practice, by placing the tube in contact with the wheel, bends it at the intended angle.
  • the bending radius corresponds to the radius of the bending wheel.
  • the tube is bent by calendering, being performed by arranging on the bending arm, which is arranged at a preset angle, a bending roller interacting with the tube which engages the bending wheel and is retained by an abutment roller rotatably supported by the frame of the machine.
  • US Patent No. 4,959,984 discloses a tube bending apparatus including a programmable bender having a collet carriage assembly which is operative to move the tube in axial directions for properly positioning the tube for its next sequential bend.
  • the axial movement of the collet carriage assembly is achieved by pinion gears which are mounted to the carriage and are rotatable under the forces of a hydraulic motor.
  • the aim of the invention is to eliminate the drawbacks mentioned above, by providing a machine for bending tubes and the like, particularly by calendering, which is capable of applying the considerable forces required to perform the calendering action without thereby having to resort to excessively powerful motors.
  • an object of the invention is to provide a machine for bending tubes and the like, particularly by calendering, which allows to withstand the forces applied to the frame without thereby resorting to oversizing of the structure and without resorting to particular solutions.
  • Another object of the present invention is to provide a machine for bending tubes and the like which can be used according to the different known methods for bending tubes, with the possibility to adapt easily also to calendering, which is not possible with most of the currently commercially available tube bending machines.
  • Another object of the present invention is to provide a machine for bending tubes and the like which, thanks to its particular constructive characteristics, is capable of giving the greatest assurances of reliability and safety in use and is also competitive from a merely economical point of view.
  • the machine for bending tubes and the like particularly by calendering, according to the invention, generally designated by the reference numeral 1, comprises a supporting frame which has a footing 2 on which longitudinal members 3 are provided for supporting and guiding a carriage or mandrel supporting head, generally designated by the reference numeral 5.
  • a core supporting assembly 6 is provided for supporting the core to be optionally inserted in the tube to be bent.
  • a bending wheel 7 is provided, at which a bending arm 8 is placed and supports an element for engaging the tube to be bent, the tube engagement element depending on the type of bending being performed.
  • the element for engaging the tube to be bent is constituted by a bending roller 10 which can be angularly positioned with respect to the wheel 7, so as to provide the intended calendering angle in cooperation with abutment rollers 11 supported by a fixed arm 12 arranged at the end of the frame.
  • a particular feature of the invention consists in that means are provided for the advancement of the head or carriage 5 which act on the frame of the machine symmetrically with respect to the advancement direction of the tube to be bent, which is retained by the mandrel 15 fitted on the head 5.
  • the advancement means are constituted by a first motor 20 and by a second motor 21 which are arranged opposite one another and actuate a first pinion 22 and a second pinion 23, keyed to the output shafts of the motors, which mesh with a first rack 24 and a second rack 25 being both supported by the longitudinal members 3 of the frame in a symmetrical position with respect to the vertical central plane along which the mandrel is arranged.
  • the head 5 is slideable on the frame by engagement of sliding blocks 30 which engage guiding elements 31 rigidly coupled to the frame.
  • the arrangement of the motors 20 and 21 is extremely important, since it allows to apply a pushing action which is symmetrical with respect to the advancing tube, so that the high power levels that must be used when calendering is performed do not generate transverse force components which would require oversizing of the frame.
  • the motors 20 and 21 can be operated independently, so that during normal uses of the tube bending machine it is possible to operate one motor only whenever it is not necessary to apply very intense forces.
  • the invention achieves the intended aim and objects, and in particular the fact is stressed that the particular embodiment of the advancement means of the mandrel supporting head allows a better distribution of the forces by discharging them symmetrically onto the frame, which can thus withstand high contrasting forces without having to resort to particular oversizing.
  • the materials used may be any according to requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Golf Clubs (AREA)

Claims (3)

  1. Maschine (1) zum Biegen von Rohren und dergleichen, insbesondere durch Kalandern, die umfasst:
    einen Rahmen, der einen Dorn-Tragekopf (5) für den Vorschub eines zu biegenden Rohrs trägt,
    einen Biegearm (8), der an einem Ende des Rahmens angeordnet ist, wobei der Arm ein Element (10) trägt, das mit dem zu biegenden Rohr in Eingriff kommt und in Bezug auf ein Biegerad (7), das von dem Rahmen getragen wird, winklig positioniert werden kann,
    eine Einrichtung für den Vorschub des Dorn-Tragekopfes (5), die auf den Rahmen wirkt und einen ersten Motor (20) umfasst, dadurch gekennzeichnet, dass die Einrichtung für den Vorschub des Dorn-Tragekopfes des Weiteren einen zweiten Motor (21) umfasst, der in Bezug auf den ersten Motor (20) gegenüberliegend und in Bezug auf die Vorschubrichtung des zu biegenden Rohrs symmetrisch angeordnet ist.
  2. Maschine nach Anspruch 1, dadurch gekennzeichnet, dass das Element, das mit dem zu biegenden Rohr in Eingriff kommt, durch eine Biegewalze (10) gebildet wird.
  3. Maschine nach Anspruch 1, dadurch gekennzeichnet, dass sie ein erstes Ritzel (22) und ein zweites Ritzel (23) umfasst, die auf die Ausgangswelle des ersten bzw. des zweiten Motors gekeilt sind und mit einer ersten Zahnstange (24) bzw. einer zweiten Zahnstange (25) in Eingriff sind, die an dem Rahmen ausgebildet sind.
EP01113615A 2000-06-20 2001-06-15 Biegevorrichtung für Rohre und dergleichen Expired - Lifetime EP1166911B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI001391 2000-06-20
IT2000MI001391A IT1318032B1 (it) 2000-06-20 2000-06-20 Macchina per la piegatura di tubi e simili, particolarmente mediantecalandratura.

Publications (3)

Publication Number Publication Date
EP1166911A2 EP1166911A2 (de) 2002-01-02
EP1166911A3 EP1166911A3 (de) 2002-12-18
EP1166911B1 true EP1166911B1 (de) 2005-10-26

Family

ID=11445307

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01113615A Expired - Lifetime EP1166911B1 (de) 2000-06-20 2001-06-15 Biegevorrichtung für Rohre und dergleichen

Country Status (5)

Country Link
EP (1) EP1166911B1 (de)
AT (1) ATE307692T1 (de)
DE (1) DE60114303T2 (de)
ES (1) ES2249353T3 (de)
IT (1) IT1318032B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8522632B2 (en) 2007-06-29 2013-09-03 Wafios Aktiengesellschaft Linear guide assembly with rack

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1025410C1 (nl) * 2004-02-05 2005-08-08 Bend Holding B V Inrichting en werkwijze voor het buigen van profielen.
CN111299377A (zh) * 2019-10-23 2020-06-19 中铝材料应用研究院有限公司 一种金属材料弯曲加工装置及加工方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4909059A (en) * 1987-10-30 1990-03-20 King William E Metal tubing bender
US4959984A (en) * 1989-08-17 1990-10-02 Ap Parts Manufacturing Company Precision bending apparatus
US5426965A (en) * 1993-05-25 1995-06-27 Eaton Leonard, Inc. Carriage boost drive

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8522632B2 (en) 2007-06-29 2013-09-03 Wafios Aktiengesellschaft Linear guide assembly with rack

Also Published As

Publication number Publication date
ITMI20001391A0 (it) 2000-06-20
EP1166911A3 (de) 2002-12-18
ES2249353T3 (es) 2006-04-01
IT1318032B1 (it) 2003-07-21
DE60114303D1 (de) 2005-12-01
ATE307692T1 (de) 2005-11-15
DE60114303T2 (de) 2006-04-27
EP1166911A2 (de) 2002-01-02
ITMI20001391A1 (it) 2001-12-20

Similar Documents

Publication Publication Date Title
JP4591908B2 (ja) パイプの曲げ加工装置
US7134310B2 (en) Tube bender
CN206083515U (zh) 一种高精密数控折弯机
JP2005219059A (ja) 鉄筋曲げ機の鉄筋送り込み装置
EP1219363B1 (de) Biegevorrichtung für längliches Material
EP1166911B1 (de) Biegevorrichtung für Rohre und dergleichen
JP3966548B2 (ja) パイプの曲げ加工装置
EP0865842B1 (de) Verfahren und Vorrichtung zur automatischen Biegung von profilierten Elementen
KR200452993Y1 (ko) 유압식 대형 장축 환봉 교정기
CN112517778B (zh) 一种多角度液压弯管机及弯管控制方法
US3545247A (en) Bending machine
US3628360A (en) Roll forming machine
US7093475B2 (en) Orbital machine for bending tubes
JP5175652B2 (ja) 曲げ加工用押圧装置
KR100212592B1 (ko) 프레스 가공기
KR101259357B1 (ko) 롤 레이저 용접장치
JP3195797U (ja) 線材矯正供給装置
KR20000010113U (ko) 권취코일의 외권교정장치
KR200351907Y1 (ko) 파이프 용접비드 제거장치
CN111589986A (zh) 一种多弧面钢筋自动弯弧机
JP2017019000A (ja) パイプベンダーにおけるパイプの送り装置
JP3424000B2 (ja) カラー成形装置
CN106053252B (zh) 一种带有检测板材焊缝性能的三辊弯曲试验装置
US3750454A (en) Horizontal metal-working machine
CN219503640U (zh) 一种钢筋折弯装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20030502

AKX Designation fees paid

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

17Q First examination report despatched

Effective date: 20041028

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051026

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051026

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051026

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 60114303

Country of ref document: DE

Date of ref document: 20051201

Kind code of ref document: P

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: MARK-PAT MODIANO S.A.

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060126

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060126

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060126

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060327

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2249353

Country of ref document: ES

Kind code of ref document: T3

ET Fr: translation filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060615

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060630

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20060727

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060615

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20080623

Year of fee payment: 8

Ref country code: IT

Payment date: 20080626

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20080709

Year of fee payment: 8

Ref country code: DE

Payment date: 20080730

Year of fee payment: 8

Ref country code: ES

Payment date: 20080626

Year of fee payment: 8

Ref country code: NL

Payment date: 20080624

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051026

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20080625

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20080623

Year of fee payment: 8

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20090615

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20100101

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20100226

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090630

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090630

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090615

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100101

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20090616

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090616

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090615

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090615