EP0178721A1 - Procédé et dispositif pour la fabrication des tubes hélicoidaux - Google Patents

Procédé et dispositif pour la fabrication des tubes hélicoidaux Download PDF

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Publication number
EP0178721A1
EP0178721A1 EP85201601A EP85201601A EP0178721A1 EP 0178721 A1 EP0178721 A1 EP 0178721A1 EP 85201601 A EP85201601 A EP 85201601A EP 85201601 A EP85201601 A EP 85201601A EP 0178721 A1 EP0178721 A1 EP 0178721A1
Authority
EP
European Patent Office
Prior art keywords
mandrel
tube
helical
rollers
feed sleeve
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.)
Granted
Application number
EP85201601A
Other languages
German (de)
English (en)
Other versions
EP0178721B1 (fr
Inventor
Ernst Dieter Ebener
Hans Günter Mörtel
Friedrich Wilhelm Hohmann
Udo Kurt Zolnowski
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.)
EBENER GmbH
GEA Group AG
Original Assignee
EBENER GmbH
Metallgesellschaft 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6248342&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0178721(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by EBENER GmbH, Metallgesellschaft AG filed Critical EBENER GmbH
Priority to AT85201601T priority Critical patent/ATE35096T1/de
Publication of EP0178721A1 publication Critical patent/EP0178721A1/fr
Application granted granted Critical
Publication of EP0178721B1 publication Critical patent/EP0178721B1/fr
Expired 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
    • B21D11/06—Bending into helical or spiral form; Forming a succession of return bends, e.g. serpentine form

Definitions

  • the invention relates to a method for producing a helical tube from a straight tube, the straight tube being wound helically over a mandrel with a rotating device, and to a device therefor.
  • the mandrel is designed to be broken down into segments and has a helical groove on its cylindrical surface, into which the tube is turned when the mandrel is turned Rollers is pressed in, the rollers are connected to a feed sleeve which is guided in a rotationally fixed manner on the mandrel and the helical tube is pulled off the disassembled mandrel with a reduced diameter.
  • the entire tube is guided through the mandrel and its spiral groove during the bending process, as a result of which a uniformly coiled tube is produced.
  • This method also makes it possible to dispense with heating or heating the straight tube to facilitate bending.
  • the tube is pressed into the preformed spiral groove of the mandrel by rollers, although one roller may also be sufficient, but usually several rollers are used.
  • the rollers are expediently rotatably attached to a connecting rail, and the connecting rail is rigidly connected to the feed sleeve.
  • the feed sleeve preferably has sliding balls on its inside, which run in the spiral groove of the mandrel. These sliding balls reduce the friction when the feed sleeve moves along the mandrel without rotating while the mandrel is rotated by a drive.
  • the bending device has an elongated, cylindrical mandrel 1, in the surface of which a helical groove 2 is incorporated.
  • the pipe 3 to be bent in a helical shape is pressed into this groove 2 by means of two rollers 4 and 5.
  • the outermost end of the tube 3 is held on the mandrel by a screwed-on clamping piece 6.
  • the mandrel which is located during the bending process between two supports 7, of which only one is shown for simplicity, is rotated in the direction of arrow 9 by a motor 8.
  • the axes 4a and 5a of the two rollers 4 and 5 start from a connecting rail 10 which is rigidly connected to a feed sleeve 12 via a rod 11.
  • the feed sleeve 12 surrounds the mandrel 1 at a short distance.
  • recesses 16 of the I nnenseits the advancing sleeve 12 sitting several sliding bearings 13, whose diameter is chosen so that they can run with low friction in the helical groove. 2
  • the balls 13 are pressed into the groove 2 by clamping screws 14 and springs 15.
  • the W is delnut ene-2 pressed and thereby itself helically deformed by the described apparatus.
  • the bent tube from the mandrel 1 it is hollow and can be dismantled.
  • Strength in F. 2 shows how the mandrel 1 consists of four segments la, lb, lc and ld, between which there are detachable flat inserts 20, 21, 22 and 23, respectively. The inserts are releasably attached to an adjacent segment by screws 24, only one of which is shown.
  • the mandrel After loosening the screws 24 and pressing the inserts 20 to 23 towards the hollow interior 25 of the mandrel 1, the mandrel disintegrates into several individual parts with a considerably smaller diameter than the original mandrel, these individual parts then being easily removed from the helically bent tube.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Moulding By Coating Moulds (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
EP85201601A 1984-10-19 1985-10-03 Procédé et dispositif pour la fabrication des tubes hélicoidaux Expired EP0178721B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85201601T ATE35096T1 (de) 1984-10-19 1985-10-03 Verfahren und vorrichtung zum herstellen wendelfoermiger rohre.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3438398 1984-10-19
DE19843438398 DE3438398A1 (de) 1984-10-19 1984-10-19 Verfahren und vorrichtung zum herstellen wendelfoermiger rohre

Publications (2)

Publication Number Publication Date
EP0178721A1 true EP0178721A1 (fr) 1986-04-23
EP0178721B1 EP0178721B1 (fr) 1988-06-15

Family

ID=6248342

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85201601A Expired EP0178721B1 (fr) 1984-10-19 1985-10-03 Procédé et dispositif pour la fabrication des tubes hélicoidaux

Country Status (3)

Country Link
EP (1) EP0178721B1 (fr)
AT (1) ATE35096T1 (fr)
DE (2) DE3438398A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105382065A (zh) * 2015-12-17 2016-03-09 金华职业技术学院 一种弯管夹具
CN105478552A (zh) * 2015-12-17 2016-04-13 金华职业技术学院 一种管子弯曲成形的加工方法
CN115780599A (zh) * 2022-12-14 2023-03-14 江苏银家不锈钢管业有限公司 不锈钢管加工用弯管机

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3912244A1 (de) * 1989-04-14 1990-10-18 Pulzer Biegetechnik Gmbh Vorrichtung zum biegen von stangenfoermigem material bereichsweise in die form einer spirale
DE102012101523B4 (de) * 2012-02-24 2015-06-25 TEKTON BENDING GmbH & Co. KG Vorrichtung und Verfahren zum Herstellen von Rohrwendeln

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2720539A1 (de) * 1976-05-06 1977-11-24 Arenco Parts Ab Vorrichtung zum biegen von rohren
DE2747844A1 (de) * 1977-10-26 1979-05-03 Schmidt & Clemens Verfahren und vorrichtung zum herstellen von rohrwendeln
FR2407764A2 (fr) * 1977-11-05 1979-06-01 Schwarze Rigobert Procede et appareil de cintrage a froid, pour realiser des canalisations courbes a deux tubes
FR2440787A1 (fr) * 1978-11-10 1980-06-06 Fjallstrom Bengt Dispositif pour introduire des tubes ou des profiles dans une machine a cintrer qui fonctionne avec un guidage interne
GB2069896A (en) * 1980-01-04 1981-09-03 Eckold Walter Ag Core for a pipe that is to be bent
FR2532565A1 (fr) * 1982-09-03 1984-03-09 Creusot Loire Procede et dispositif de serpentinage des tubes d'un faisceau tubulaire d'un generateur de vapeur

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2720539A1 (de) * 1976-05-06 1977-11-24 Arenco Parts Ab Vorrichtung zum biegen von rohren
DE2747844A1 (de) * 1977-10-26 1979-05-03 Schmidt & Clemens Verfahren und vorrichtung zum herstellen von rohrwendeln
FR2407764A2 (fr) * 1977-11-05 1979-06-01 Schwarze Rigobert Procede et appareil de cintrage a froid, pour realiser des canalisations courbes a deux tubes
FR2440787A1 (fr) * 1978-11-10 1980-06-06 Fjallstrom Bengt Dispositif pour introduire des tubes ou des profiles dans une machine a cintrer qui fonctionne avec un guidage interne
GB2069896A (en) * 1980-01-04 1981-09-03 Eckold Walter Ag Core for a pipe that is to be bent
FR2532565A1 (fr) * 1982-09-03 1984-03-09 Creusot Loire Procede et dispositif de serpentinage des tubes d'un faisceau tubulaire d'un generateur de vapeur

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105382065A (zh) * 2015-12-17 2016-03-09 金华职业技术学院 一种弯管夹具
CN105478552A (zh) * 2015-12-17 2016-04-13 金华职业技术学院 一种管子弯曲成形的加工方法
CN105478552B (zh) * 2015-12-17 2017-09-05 金华职业技术学院 一种管子弯曲成形的加工方法
CN115780599A (zh) * 2022-12-14 2023-03-14 江苏银家不锈钢管业有限公司 不锈钢管加工用弯管机
CN115780599B (zh) * 2022-12-14 2023-12-22 江苏银家不锈钢管业有限公司 不锈钢管加工用弯管机

Also Published As

Publication number Publication date
DE3563313D1 (en) 1988-07-21
EP0178721B1 (fr) 1988-06-15
ATE35096T1 (de) 1988-07-15
DE3438398A1 (de) 1986-04-30

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