EP0459217A2 - Procédé et dispositif pour plier des profils à froid - Google Patents

Procédé et dispositif pour plier des profils à froid Download PDF

Info

Publication number: EP0459217A2
Authority: EP; European Patent Office
Prior art keywords: jaws; pair; profile; displacing; backenpaar
Prior art date: 1990-05-26
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

EP91107838A

Other languages

German (de)

English (en)

Other versions

EP0459217B1 (fr

EP0459217A3 (en

Inventor

Horst Schumann

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.)

Gfi Gesellschaft fur Ingenieursdienste Mbh

Original Assignee

Gfi Gesellschaft fur Ingenieursdienste Mbh

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.)

1990-05-26

Filing date

1991-05-15

Publication date

1991-12-04

1991-05-15 Application filed by Gfi Gesellschaft fur Ingenieursdienste Mbh filed Critical Gfi Gesellschaft fur Ingenieursdienste Mbh

1991-05-15 Priority to DE9117098U priority Critical patent/DE9117098U1/de

1991-12-04 Publication of EP0459217A2 publication Critical patent/EP0459217A2/fr

1992-02-26 Publication of EP0459217A3 publication Critical patent/EP0459217A3/de

1995-06-14 Application granted granted Critical

1995-06-14 Publication of EP0459217B1 publication Critical patent/EP0459217B1/fr

2011-05-15 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

238000005452 bending Methods 0.000 title claims abstract description 15
238000000034 method Methods 0.000 title claims abstract description 10
238000006073 displacement reaction Methods 0.000 claims abstract description 5
229910000831 Steel Inorganic materials 0.000 claims abstract description 4
239000010959 steel Substances 0.000 claims abstract description 4
238000010276 construction Methods 0.000 description 2
239000000463 material Substances 0.000 description 2
239000002184 metal Substances 0.000 description 1
230000000717 retained effect Effects 0.000 description 1

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
- 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
- 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
- B21D11/18—Joggling

Definitions

the invention relates to a method and a device for cold bending profiles, in particular from wide-flange beams, in particular to S-shaped single-track steel sleepers, while maintaining the profile cross-sectional shape.
the object of the invention is to provide a method and a device, whereby large numbers of S-shaped profiles can be achieved with relatively little design effort and fast operation.
This object is achieved in that the profile is clamped between a first and a second pair of jaws, which are spaced from each other, that the second pair of jaws is then moved on a section of an arc whose center lies near the first pair of jaws, and that while moving, the second pair of jaws maintain their alignment parallel to the first pair of jaws.
a profile can be bent twice in opposite directions in a single work step, both bending points having the same bending angle and thus the two end regions of the profile being parallel to one another after the simultaneous bending of both points.
Process and device are characterized by speed and precision.
the profile is also securely prevented from sliding in the jaws.
the second pair of jaws is preferably moved over a circular arc that spans an angle of 5 to 30 degrees.
the second pair of jaws is displaced in a direction transverse to the jaw surfaces by a device, in particular a cylinder-piston unit, and the profile section lying between the pairs of jaws pulls the second pair of jaws onto the circular arc.
a device in particular a cylinder-piston unit
the profile section lying between the pairs of jaws pulls the second pair of jaws onto the circular arc.
a particularly simple construction is created when the device displacing the second pair of jaws is articulated with one end on the second pair of jaws and with the second end on the machine frame. It is therefore not even necessary for the device which displaces the second pair of jaws to be mounted on a straight guide, but the double articulation replaces such a straight guide.
the device displacing the second pair of jaws be at an angle of 2 to 8 degrees to the normal of the jaw surface second pair of jaws acts. As a result, the device presses the second pair of jaws with one component in the direction of the first pair of jaws from the outset.
a structurally particularly simple and safe as well as precise construction is created when the device displacing the second pair of jaws is movably mounted transversely to the direction of displacement. It is particularly advantageous if the device which moves the second pair of jaws only on one of the jaws of the second The pair of jaws is attached and on the second jaw of the second pair of jaws a pressure-generating second device, in particular a cylinder-piston unit, is attached, which yields when a certain pressure generated by the displacing first device is exceeded and thereby maintains the required clamping pressure.
the second jaw of the second pair of jaws not only takes on the task of holding the profile, but also takes up the movement of the profile, so that an additional guiding and holding device is unnecessary.
the device displacing the second pair of jaws is mounted on the adjusting device, in particular in the form of a cylinder-piston unit, at the end opposite the pair of jaws.
a device which absorbs particularly high forces and works safely is achieved when the second pair of jaws is guided on a part, in particular a quadruple guide, so as to be straight and displaceable transversely and parallel to the profile longitudinal direction.
the second device generating the pressure for the second jaw of the second pair of jaws can be attached to the part or to the quadruple guide.
the bending device (bending press) has a frame G in which two pairs of jaws 1, 2 with the jaws 1a, 1b and 2a, 2b are mounted.
the two pairs of jaws 1, 2 lie at a distance from one another which is equal to the distance between the desired bending points on the profile 3.
the jaws of both pairs of jaws lie on the profile 3 on both sides, the flanges of the wide-flange beam (double-t beam) in particular lying horizontally and the jaws having recesses 4 which each accommodate half of the flanges, so that both flanges half over and under attack each.
the jaw 1 a is immovably fastened to the machine frame via a vertical plate 4, and the second jaw 1 b is fastened to a vertical plate 5, which is moved horizontally and at right angles to the profile 3 against the latter by a cylinder-piston unit 6 to clamp this.
the plate 5 has four horizontal bores or bushings 7 which slide on four rods 8 or tubes. The rods and bushings thus form a first quadruple straight guide F1 for the plate 5 and thus for the second jaw 1b.
the second pair of jaws 2a, 2b is supported in a straight line on a quadruple guide F2, with the second pair of jaws 2 both jaws 2a, 2b are mounted on these four straight guides or the four rods 9 with bushings 10.
the second jaws 2a, 2b are thus also fastened to plates 11, 12 which are guided through the four rods 9.
the four guide rods 9 of the second quadruple guide F2 are fastened on either side to a plate 14 or 15, which are each guided in a straight line on a lower and upper horizontal rod 16, 17 and 18, 19. While the rods 8, 9 lie at right angles to the profile 3 which has not yet been bent, the rods 16 to 19 lie parallel to the profile 3 which has not yet been bent.
the four parallel tubes or rods 9 of the second quadruple guide F2 form together with the plates 14, 15 a double frame (cage) which is movable on the four rods 16 to 19 parallel to the profile 3, so that the rods 16 to 19 one third quadruple guide F3 for this double frame 20 are.
the double frame itself forms a fourfold guide for the two pairs of jaws, it is itself guided fourfold, with all three fourfold guides F1, F2, F3 being straight guides with closed sliding guides.
rods 8, 9, 16-19 are thus on the four parallel edges of a cuboid.
the jaws 1b and 2b press the profile against the jaws 1a and 2a.
the pressing work of the jaw 2b is carried out by a hydraulic cylinder-piston unit (second device) 21, the piston rod of which is fixed to the plate 12 and the cylinder of which is fixed to the plate 15.
a device 22 which has a cylinder-piston unit, the piston rod 24 of which is articulated on the jaw 2a.
the cylinder 25 of the cylinder-piston unit 22 is included the end opposite the jaw 2a to the machine frame directly or with an articulation point 26 to an adjustment device 27, which in turn has a cylinder-piston unit 28 in order to be able to adjust the position of the articulation point 26.
All cylinder-piston units of the bending device are acted upon hydraulically. If pressure is exerted on the jaw 2a by the cylinder-piston unit 22, the profile 3 is displaced together with the jaw 2b, the cylinder-piston unit 21 giving way without reducing the clamping force.
the profile 3 is not only bent around the end of the first pair of jaws 1 close to the second pair of jaws 2, but also in the opposite direction around the end of the second pair of jaws 2, which is close to the first pair of jaws 1, because of the second and third quadruples - Care is taken that the second pair of jaws always remains parallel to the first pair of jaws during its entire displacement on the sheet 29.
the second jaw 1b of the first pair of jaws 1 and the first jaw 2a of the second pair of jaws 2 have a rounding 1c, 2c on the end facing the other pair of jaws on the inside of the profile of each bend in order to prevent the profile 3 from buckling too much.
the bending device can have a wide variety of alternative designs. So the second pair of jaws Sliding device 22 can be movable on a guide parallel to profile 3 and furthermore the second quadruple guide F2 can be guided at right angles to profile 3, in which case its quadruple guide for the second pair of jaws is parallel to profile 3.
the number of guide rods can also be greater or less than four for the guides F1, F2, F3. So if the claims refer to quadruple tours, then this also means double, triple, quintuple or sixfold tours.

Landscapes

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

EP91107838A 1990-05-26 1991-05-15 Procédé et dispositif pour plier des profils à froid Expired - Lifetime EP0459217B1 (fr)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
DE9117098U DE9117098U1 (de)	1990-05-26	1991-05-15	Vorrichtung zum Kaltbiegen von Profilen

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE4017034A DE4017034A1 (de)	1990-05-26	1990-05-26	Verfahren und vorrichtung zum kaltbiegen von profilen
DE4017034		1990-05-26

Publications (3)

Publication Number	Publication Date
EP0459217A2 true EP0459217A2 (fr)	1991-12-04
EP0459217A3 EP0459217A3 (en)	1992-02-26
EP0459217B1 EP0459217B1 (fr)	1995-06-14

Family

ID=6407273

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP91107838A Expired - Lifetime EP0459217B1 (fr)	1990-05-26	1991-05-15	Procédé et dispositif pour plier des profils à froid

Country Status (3)

Country	Link
EP (1)	EP0459217B1 (fr)
AT (1)	ATE123674T1 (fr)
DE (2)	DE4017034A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN114669638A (zh) *	2022-03-29	2022-06-28	东阳东磁自动化科技有限公司	一种中心导体多角折弯装置及其实现方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN110883141B (zh) *	2019-12-05	2021-06-22	马鞍山钢铁股份有限公司	一种电液伺服板料折弯机滑块多缸同步及定位控制方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3000423A (en) *	1957-08-19	1961-09-19	Konink Nl Vliegtuigenfabriek F	Machine for joggling shaped metal or metal profiles
JPS5938048B2 (ja) *	1975-09-18	1984-09-13	第一高周波工業（株）	長尺材の連続曲げ加工方法及びその装置
DE3423052A1 (de) *	1984-06-22	1986-01-02	SWF Auto-Electric GmbH, 7120 Bietigheim-Bissingen	Verfahren und vorrichtung zur herstellung eines hebels

1990
- 1990-05-26 DE DE4017034A patent/DE4017034A1/de not_active Ceased
1991
- 1991-05-15 AT AT91107838T patent/ATE123674T1/de not_active IP Right Cessation
- 1991-05-15 EP EP91107838A patent/EP0459217B1/fr not_active Expired - Lifetime
- 1991-05-15 DE DE59105686T patent/DE59105686D1/de not_active Expired - Fee Related

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN114669638A (zh) *	2022-03-29	2022-06-28	东阳东磁自动化科技有限公司	一种中心导体多角折弯装置及其实现方法
CN114669638B (zh) *	2022-03-29	2024-05-17	东阳东磁自动化科技有限公司	一种中心导体多角折弯装置及其实现方法

Also Published As

Publication number	Publication date
ATE123674T1 (de)	1995-06-15
EP0459217B1 (fr)	1995-06-14
DE4017034A1 (de)	1991-11-28
DE59105686D1 (de)	1995-07-20
EP0459217A3 (en)	1992-02-26

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1991-10-18	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
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