EP0416223A1 - Méthode et dispositif pour cintrer de matières en forme de barre - Google Patents

Méthode et dispositif pour cintrer de matières en forme de barre Download PDF

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Publication number
EP0416223A1
EP0416223A1 EP90111259A EP90111259A EP0416223A1 EP 0416223 A1 EP0416223 A1 EP 0416223A1 EP 90111259 A EP90111259 A EP 90111259A EP 90111259 A EP90111259 A EP 90111259A EP 0416223 A1 EP0416223 A1 EP 0416223A1
Authority
EP
European Patent Office
Prior art keywords
bending
carriage
holder
counter
mandrel
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.)
Withdrawn
Application number
EP90111259A
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German (de)
English (en)
Inventor
Heinz Ruhl
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0416223A1 publication Critical patent/EP0416223A1/fr
Withdrawn legal-status Critical Current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
    • 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

Definitions

  • the invention relates to a method and a device for bending rod-shaped material, such as reinforcing steel, comprising a bending carriage which can be displaced along the material and which has at least one bending mandrel and a bending element which can be displaced in relation to this, and a counter-holder, and one Holding device for the material, which fixes the material during bending.
  • the object of the present invention is to develop a method and a device of the type described above in such a way that, with structurally simple means, it is possible to bend rod-shaped material to desired bends with sections of different radii, if necessary. It should also be ensured that long materials of small diameter do not bend inadmissibly, as a result of which an apparent shortening of the material would occur and, as a result, the desired end geometries of the bent material would not be achievable.
  • the object is essentially achieved by a method that is characterized in that the bending of the material is carried out by moving the bending carriage relative to the holding device, in particular in that the bending is carried out by moving the bending carriage in the direction of the holding device.
  • the bending of the material is consequently effected in that, depending on the position of the bending element and mandrel, the material is bent to the desired extent during the displacement of the bending carriage in the direction of the holding device.
  • the material is consequently pressed between the counter-holder, bending mandrel and bending element by the movement of the bending carriage in the direction of the holding device, by means of which the material is held, and is thereby bent.
  • the position of the bending element relative to the bending mandrel is varied during the displacement, so that the bends have sections of different radii.
  • the bending element can be adjusted either with the bending carriage resting or moving.
  • the counter-holder can be moved in relation to the bending mandrel, whereby the advantage is achieved that only an extremely small material length remains unbent. This length depends on the distance between the holding device and the counter-holder.
  • a device for bending rod-shaped material such as reinforcing steel comprising a bending carriage which is displaceable along the material and which has at least one bending mandrel and one for the purpose of achieving a desired bending with respect to this displaceable bending element and a counter-holder, and a holding device for the material which holds the material fixes during bending, is characterized in that the bending carriage can be moved in the longitudinal direction of the unbent material in the direction of the holding device.
  • the bending mandrel, the bending element and the counter-holder are designed as bending rollers, the axes of rotation being parallel to one another and in planes running parallel to the longitudinal direction of the unbent material.
  • the counterholder which forms the first bending roller, is basically arranged in a stationary manner.
  • the distance between the counterholder and the mandrel in relation to the tangents of the material is adjusted to the material diameter.
  • the mandrel is e.g. arranged displaceably on the bending carriage by means of a hand crank perpendicular to the longitudinal direction of the material.
  • the bending element as the third bending roller can likewise preferably be displaced along a straight line running perpendicular to the longitudinal direction of the unbent material, preferably driven by means of a hydraulic cylinder or a motor, so as to specify the bending radius of the material pushed between the bending mandrel and the bending element during the movement of the bending carriage.
  • a change in position of the bending element can optionally take place during the movement of the carriage or when it is stationary, which in turn influences the bending radius.
  • This constructive means has the advantage that the bent material has merging sections of different radii of curvature.
  • the holding device itself can preferably be designed as a clamping device in which the ends of the material are clamped by means of clamping jaws, for example. At the same time, the material should rest against a stop in order to have a clear reference point.
  • a guide element which can either receive or lower the material can be arranged in the region of the travel path of the bending carriage, by means of which it is ensured that the material cannot bend uncontrollably between the holding device and the bending carriage.
  • the guide or support element does not hinder the travel path of the bending carriage, which can be removed, preferably lowered, from the travel path.
  • the guide element on the head side has a recess, such as a groove, for receiving the material, which recess can be covered with a closure element. This ensures that the material cannot slide out of the recess during bending, which can result in torsional forces.
  • the guide or support element is preferably designed as a hydraulically actuatable cylinder which is provided with the receptacle on the end face.
  • the closure element can be designed as a flat iron, which starts from a shaft running parallel to the axis of the cylinder, so as to be rotated or removed from the groove to the desired extent.
  • a device (10) for bending rod-shaped material (12) is shown.
  • the device comprises on the one hand a bending carriage (14) which can be displaced in the direction of the arrow (18) along a supporting frame (16).
  • the displacement preferably takes place via an endless chain (20) which is guided over deflection rollers (22) and (24) arranged over the end region of the support frame (16).
  • the deflection roller (24) is at the same time a drive roller which is driven by a motor (26).
  • Other drive options for the bending carriage (14) are of course also available.
  • the drive roller (24) there is also a holding device or clamping device (28), via which the rod-shaped material, not shown in FIGS. 1 and 2, is preferably fixed between clamping jaws. There is also a stop in the area of the holding device (28) against which the material can strike.
  • the bending carriage (14) has a bending mandrel (30), which is followed by a bending element (32) and a counter-holder (34).
  • the bending mandrel (30) as well as the bending element (32) and the counter-holder (34) are designed as bending rollers which can be rotated about vertical axes which consequently run perpendicular to the longitudinal direction of the unbent material or the travel path of the bending carriage (14).
  • the material itself is guided to or from the bending rollers (30), (32) and (34) along a horizontally running bending table (36).
  • the bending mandrel (30) can preferably be aligned with the counter-holder (34) by means of a hand spindle in such a way that the tangents formed by the material to be passed through have a distance which corresponds to the material diameter.
  • the bending element (32) can be e.g. of an electric motor (38) are displaced along the line (40).
  • the counter-holder (34) can e.g. by means of a drive such as an electric motor (42) along a line (44) running parallel to the line (40).
  • a guide device (46) is arranged in the travel path of the bending carriage (14), by means of which the material to be bent is held so as not to bend when the bending carriage (14) is in a far away position from the holding device (28).
  • the guide device (46) comprises a lowerable cylinder (48) which has a recess on the end face, such as a groove (50), into which the material is inserted.
  • a groove (50) In the exemplary embodiment, three rod-shaped materials (12) are inserted.
  • the opening of the groove (50) is covered by a flat iron (52) which starts from a shaft (54) which runs parallel to the cylinder (48). As a result, the groove (50) can be opened or closed by rotating the shaft (54).
  • the cylinder (48) and thus the end region can be lowered to such an extent that the underside of the trolley (14) can move over the guide element (46). As a result, the path of the bending carriage (14) is not impaired by the guide or support element (46).
  • the cover ie the flat iron (52)
  • the cover is of course pivoted away so that the material (12) remains in the raised position between the holding device (28) and the bending carriage (14). 3 is both the shown raised as well as the lowered position.
  • the rod-shaped material (12) is bent in that the bending carriage (14) is displaced in the direction of the holding device (28), that is to say along the arrow (56) in FIG. 4.
  • the position of the bending element (32) relative to the bending mandrel (30) and the counter-holder (34) results in a continuous bending of the material (12).
  • the bending element (32) can, as mentioned, be moved along the straight line (14) in order to assume different representations (58) or (60) dashed in FIG. 4.
  • the bending element (32) can be adjusted both when the bending carriage (14) is at rest and when it is moving.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP90111259A 1989-06-15 1990-06-14 Méthode et dispositif pour cintrer de matières en forme de barre Withdrawn EP0416223A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3919607 1989-06-15
DE19893919607 DE3919607C2 (de) 1989-06-15 1989-06-15 Vorrichtung zum Biegen von stabförmigem Material

Publications (1)

Publication Number Publication Date
EP0416223A1 true EP0416223A1 (fr) 1991-03-13

Family

ID=6382811

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90111259A Withdrawn EP0416223A1 (fr) 1989-06-15 1990-06-14 Méthode et dispositif pour cintrer de matières en forme de barre

Country Status (2)

Country Link
EP (1) EP0416223A1 (fr)
DE (1) DE3919607C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0715907A1 (fr) * 1994-12-07 1996-06-12 Peddinghaus, Carl Ullrich, Dr. Méthode de cintrage de barres en acier, en particulier de cintrage de fers à béton en forme des étriers
EP2965829A1 (fr) * 2014-07-10 2016-01-13 PEDAX GmbH Procédé de cintrage de profilés métalliques allongés pliables, notamment de tiges d'acier pour renforcement du béton, par une unité de cintrage mobile et machine utilisée pour celui-ci

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1295561B1 (it) * 1997-05-29 1999-05-13 Piegatrici Macch Elettr Sistema di piegatura con gruppo piegatore mobile e relativa macchina sagomatrice

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH602207A5 (fr) * 1974-07-24 1978-07-31 Boehl Hans Erich
DE2825723A1 (de) * 1977-06-22 1979-01-11 Daiichi Koshuha Kogyo Kk Verfahren und vorrichtung zum biegen von langgestrecktem metallgut

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3312397A1 (de) * 1983-04-06 1984-10-11 Helmut 6230 Kriftel Zahlaus Verfahren und vorrichtung zum biegen von stabfoermigen materialien
JPH089063B2 (ja) * 1985-10-21 1996-01-31 臼井国際産業株式会社 パイプ自動ベンダーにおける曲げ加工ユニット装置
EP0238026B1 (fr) * 1986-03-14 1991-06-26 Ruhl, Heinz Procédé et dispositif pour cintrer des matériaux en forme de barre
FR2610852B1 (fr) * 1987-02-17 1993-07-02 Picot Sa Machine a cintrer les tubes, pourvue de deux tetes de cintrage

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH602207A5 (fr) * 1974-07-24 1978-07-31 Boehl Hans Erich
DE2825723A1 (de) * 1977-06-22 1979-01-11 Daiichi Koshuha Kogyo Kk Verfahren und vorrichtung zum biegen von langgestrecktem metallgut

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0715907A1 (fr) * 1994-12-07 1996-06-12 Peddinghaus, Carl Ullrich, Dr. Méthode de cintrage de barres en acier, en particulier de cintrage de fers à béton en forme des étriers
EP2965829A1 (fr) * 2014-07-10 2016-01-13 PEDAX GmbH Procédé de cintrage de profilés métalliques allongés pliables, notamment de tiges d'acier pour renforcement du béton, par une unité de cintrage mobile et machine utilisée pour celui-ci

Also Published As

Publication number Publication date
DE3919607C2 (de) 1994-05-05
DE3919607A1 (de) 1991-01-03

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