EP0014813B1 - Procédé de fabrication de tuyaux fendus pour une machine à souder des tubes et dispositif pour la mise en oeuvre de ce procédé - Google Patents

Procédé de fabrication de tuyaux fendus pour une machine à souder des tubes et dispositif pour la mise en oeuvre de ce procédé Download PDF

Info

Publication number
EP0014813B1
EP0014813B1 EP79730005A EP79730005A EP0014813B1 EP 0014813 B1 EP0014813 B1 EP 0014813B1 EP 79730005 A EP79730005 A EP 79730005A EP 79730005 A EP79730005 A EP 79730005A EP 0014813 B1 EP0014813 B1 EP 0014813B1
Authority
EP
European Patent Office
Prior art keywords
shaping
strip
bending
tube
plates
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
Application number
EP79730005A
Other languages
German (de)
English (en)
Other versions
EP0014813A1 (fr
Inventor
Hans Meurer
Josef Jordans
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.)
Vodafone GmbH
Original Assignee
Mannesmann 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 Mannesmann AG filed Critical Mannesmann AG
Priority to AT79730005T priority Critical patent/ATE1739T1/de
Publication of EP0014813A1 publication Critical patent/EP0014813A1/fr
Application granted granted Critical
Publication of EP0014813B1 publication Critical patent/EP0014813B1/fr
Expired 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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
    • B21D5/10—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles for making tubes
    • B21D5/12—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles for making tubes making use of forming-rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/08—Making tubes with welded or soldered seams

Definitions

  • the invention relates to a method for producing slotted tubes according to the preamble of claim 1 and to an apparatus for carrying out the method according to the preamble of claim 3.
  • the shaping steps are carried out in a number of bending roller stands which are individually adjustable to the intermediate contour of the trough-shaped band to be formed, consisting of arc curvature and arc length.
  • all these stands are adjusted to the intermediate contours of the other pipe diameter. This is cumbersome.
  • bending roller stands are of heavy, complex design because of the adjustment devices and the variable storage of the beige rollers.
  • the invention aims to provide a method and a device with which the changeover time of the contour bending device can be shortened and simplified, the structural design of the contour bending device can be made cheaper and the edge stress during bending can be reduced.
  • the object is achieved with the features of the characterizing part of claim 1 and of claim 3.
  • a set of shaping tools is thus kept ready, from which only one group is selected depending on the pipe diameter to be manufactured in each case. It has been shown that the set in relation to the group section required in each case according to claim 2 needs to contain less than twice the number of molds in order to be able to pre-form the pipe diameter mentioned in the description as slot pipes.
  • the decisive factor here is that the form steps have the same form steps for the molding of all slotted tube dimensions.
  • a contour bending device derived from the method has the particular advantage that the plate-shaped design of the molding tools leads to a particularly simple design of the molding steps. It is appropriate according to claim 4 to use each of the two sides of the plate for the attachment of roles. Since forming into the slotted tube takes place in an arcuate gap formed by the concave and convex rollers, the band edges are not stressed and in particular in the case of thick-walled tubes, inadmissible deformations of these are avoided.
  • the plates are given the same lateral dimensions and if the stand of the device is designed as a cassette holder, the plates can be handled like cassette plates.
  • a second cassette holder which holds the entire set of tools and which is a working component of the device as a mobile magazine.
  • the radius of curvature of the band is gradually reduced.
  • row is a function that takes the edge stretching into account when shaping the strip.
  • even is not just a geometric uniformity. Accordingly, the term “radius of curvature” is not strictly linked to the arc. It generally applies in practice even when the Geometric curvature deviates geometrically from the circular arc.
  • the shaping step No. 1 has been removed in accordance with FIG. 1.
  • Form level 9 has been added for this.
  • the total number of eight has remained.
  • the width of the band for the production of the smaller slotted tube is smaller than in the first example.
  • the drawing takes this into account by means of a narrower, thickly drawn arch, which is followed by a thinly drawn protrusion on both sides. This expresses the fact that the uppermost circular arc of the row under "508 0" is not only identical in radius of curvature, but also in terms of tool length, in terms of tools, with circular arc no. 2 of the row drawn under "600 ⁇ ".
  • the thickly drawn sheet is the ribbon and the thinly drawn overhang is the unused part of the tool-shaped sheet length.
  • each line of FIG. 1 and also the arc length are identical to one another.
  • the relevant arcs are drawn to the left of the number scale and result in a total of fourteen form levels.
  • This is a set of 1 forming tools belonging to the system of the pipe welding machine, of which a group section 2 is used in each case for the production of one of the pipe diameters mentioned. Since the five group sections 2 have all eight form stages, each group section is a little larger than half of the set 1.
  • the group section which is needed for the production of the largest pipe diameter area which is considered for the conversion of the device zer production shifts a slotted tube each smaller diameter from one end of the set 1 to the other end of the set.
  • FIG. 1 Each of the arcs in FIG. 1 is a shape step 3 corresponding to FIGS. 2 and 3, namely the arcs No. 4 and No. 7 for FIGS. 2 and 3.
  • the reference numerals 3 in FIGS. 2 and 3 are provided with the indices 4 and 7.
  • FIG. 2a shows the case a) in line 4 of FIGS. 1 and 2b the case b) of this line.
  • Line a) and b) apply accordingly to line 7.
  • the radii of curvature in the two sub-figures 2a and 2b or 3a and 3b are equal to one another. Only the width of the continuous belt 16 in FIGS. 2a and 3a is larger than in FIGS. 2b and 3b.
  • Each form step 3 is composed of beige rolls 4 and 5 which are arranged as closely as possible.
  • the rolls 4 are convex and the rolls 5 are concave.
  • the row of concave rollers 5 is interrupted in the middle. The width of the interruption depends on the narrowest bandwidth in the diameter range of the pipe welding machine. This can be clearly seen in FIGS. 2b and 3b.
  • the plates 7 in Fig. 2a and Fig. 2b are identical. In Fig. 3, the plate 7 has a different contour in height than in Fig. 2, while the distance A of the side edges is the same for all plates 7.
  • the reference number 7 therefore applies to each of the fourteen plates present in total.
  • Fig. 2a it is also indicated that the plates 7 are loosely suspended in a frame 8, namely interchangeably.
  • the plates 7 are therefore referred to as cassette plates and the frame 8 with the cassette holder.
  • 2 and 3 also show that the form steps 4 are immovably fixed in the cassette plate, namely in bearing blocks 9.
  • the bearing blocks 9 for the bending rollers 4 produce a polygon arrangement corresponding to the circular arc slot 6.
  • 10 are the screws that secure the bearing blocks to the plate.
  • 11 is the axis of the individual roller 4. The same applies to the row of concave bending rollers 5. Because of the above-mentioned interruption in the center of the arch, the bearing blocks 12 seated at the ends receive only a single axis 11.
  • FIG. 5 which relates to FIG. 4, also refers to FIG. 3b.
  • the latter in the overall arrangement of the roles.
  • the parts designated 13 and 14 on the right-hand side of the plate 7 are the bearing blocks which are seated at the upper ends of the roller arches, similar to the bearing blocks 12 in FIG.
  • This is a segment 15 for supporting the resilient tape edges between two cassette plates, the arrow indicating the direction of travel of the tape.
  • the arc length of the segments 1 5 corresponds to that of the opposite side, i.e. the upper end of the segment is a bearing block 13, which lies opposite the first bearing block 13 on the plate 7.
  • the tape 16 unwound from a coil is fed to a driving roll stand 17 and receives therein the contour of the shaping step 3 1 of the cassette plate 7 1 .
  • Fig. 6 leads to Fig. 7; because Fig. 7 is the overall system of pipe welding machine with the entry point of the belt 16, said drive roll stand 17, the frame designated above with cassette holder 8, which holds eight cassettes 7, three knife stands 18, the actual welding stand 19 and the calibration stand 20.
  • a track 21 is laid, on which a second cassette holder 22 accommodating the total number of cassettes 7, ie the set 1 of molding tools, can be moved as a magazine carriage.
  • the holder of the cassettes is designed similar to that of the roll stands of a pipe stretch reducing mill in order to enable lateral displacement. Any means of displacement are not shown.
  • the position which the magazine trolley in FIG. 7 occupies can be referred to the penultimate of the five rows of sheets in FIG.
  • the number of bending rolls in the row of rolls of the pipe welding machine depends on the size of the pipe welding machine, as far as the aim is to make the rolls as small as possible. This has limits to the practical size. For the smallest type size, for example for pipes in domestic installations, mold step frames with only two to three bending rollers are sufficient. In this limit case, the row of roles would be reduced to a single role.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Claims (6)

1. Procédé pour la fabrication de tubes fendus pour la gamme des diamètres d'une machine à souder les tubes suivant une pluralité d'étapes de formage, qui réduisent par pas la courbure de profil de la bande, dans lequel un sous-ensemble convenable d'un ensemble d'outils de formage est agencé en combinaison pour être adapté à chaque diamètre de tube à fabriquer en fonction dudit diamètre et est mis en place dans un dispositif de roulage de profil et est traversé sur la bande sans ajustage postérieur, caractérisé en ce que la totalité de la gamme des courbures jusque vers le bas la courbure du plus petit tube fendu est subdivisée en une suite d'étages de formage déterminés à chaque fois pour la longueur d'arc la plus grande.
2. Procédé selon la revendication 1, caractérisé en ce que on choisit comme sous-ensemble environ la moitié du jeu des outils, la position relative dudit sous-ensemble dans dans le jeu étant décalée vers l'une ou l'autre des extrémités dudit jeu en fonction du diamètre de chaque tube fendu à fabriquer.
3. Dispositif de roulage pour la mise en oeuvre du procédé selon les revendications 1 ou 2, comportant une pluralité de plaques pourvues de cylindres de roulage, traversées par la bande et constituant chacune un étage de formage, caractérisé en ce que chaque étage de formage comprend des cylindres de roulage (4, 5) convexes et concaves formant l'étape correspondante (N° 1 à 14) de la courbure, agencés aussi près que possible les uns derrière les autres et tourillonnés chacun sur les plaques, la longueur de chaque série de cylindres étant adaptée à la largeur de la bande du diamètre du tube relativement le plus grand, pour lequel cet étage de formage est également un outil.
4. Dispositif selon la revendication 3, caractérisé en ce que les cylindres de roulage (4, 5) se trouvent d'un côté de la plaque (7) et en ce que de l'autre côté de la plaque sont agencés deux segments (15) de cylindres concaves (5) en appui sur les bords de la bande.
5. Dispositif selon la revendication 4, caractérisé en ce que les plaques (7) ont les mêmes dimensions latérales, présentent la forme de cassette, et sont portées par un bâti du dispositif conformé en support de cassette (8).
6. Dispositif selon la revendication 5, caractérisé en ce qu'un deuxième support de cassette (22) recevant le jeu (1) d'outils de formage est agencé en tant que chariot magasin déplaçable longitudinalement au voisinage du dispositif de roulage et en ce que les plaques-cassettes (7) formant chaque sous-ensemble (2) sont disposés sous forme d'une unité facilement interchangeable du second support de cassette (22) dans le premier support de cassette (8).
EP79730005A 1979-02-19 1979-11-16 Procédé de fabrication de tuyaux fendus pour une machine à souder des tubes et dispositif pour la mise en oeuvre de ce procédé Expired EP0014813B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT79730005T ATE1739T1 (de) 1979-02-19 1979-11-16 Verfahren zur herstellung von schlitzrohren fuer eine rohrschweissmaschine und vorrichtung zur durchfuehrung des verfahrens.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2906692A DE2906692C2 (de) 1979-02-19 1979-02-19 Verfahren zur Herstellung von Schlitzrohren für eine Rohrschweißmaschine und Vorrichtung zur Durchführung des Verfahrens
DE2906692 1979-02-19

Publications (2)

Publication Number Publication Date
EP0014813A1 EP0014813A1 (fr) 1980-09-03
EP0014813B1 true EP0014813B1 (fr) 1982-11-03

Family

ID=6063537

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79730005A Expired EP0014813B1 (fr) 1979-02-19 1979-11-16 Procédé de fabrication de tuyaux fendus pour une machine à souder des tubes et dispositif pour la mise en oeuvre de ce procédé

Country Status (5)

Country Link
US (1) US4530225A (fr)
EP (1) EP0014813B1 (fr)
AT (1) ATE1739T1 (fr)
DE (1) DE2906692C2 (fr)
SU (1) SU1080733A3 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3135086C1 (de) * 1981-09-01 1983-04-14 Mannesmann AG, 4000 Düsseldorf Schwertwalze fuer Schlitzrohrkalibergerueste
US4770017A (en) * 1986-04-02 1988-09-13 Agency Of Industrial Science And Technology Apparatus for forming plate with a double-curved surface
DE3810611A1 (de) * 1988-03-29 1989-10-19 Krupp Gmbh Verfahren zum herstellen von dosenzargen und vorrichtung zum durchfuehren des verfahrens
US5299440A (en) * 1989-08-09 1994-04-05 Barraclough Keith S Rolling mills
US5647241A (en) * 1995-09-22 1997-07-15 Abbey Etna Machine Company Rotary upper roll selector
US6041632A (en) * 1997-09-10 2000-03-28 Kawasaki Steel Corporation Pipe forming roll apparatus and method
US5946961A (en) * 1998-05-01 1999-09-07 Buhrke Industries, Inc. Web bowing apparatus
JP4396803B2 (ja) * 2001-05-15 2010-01-13 トヨタ自動車株式会社 中空製品の製造方法、およびその製造装置
EP2357047B1 (fr) * 2010-02-12 2017-07-19 DREISTERN GmbH & Co.KG Installation pour former une bande ou un profil métallique longitudinalement en un profil ou un tuyau
CN104438432B (zh) * 2014-10-28 2016-08-17 武汉钢铁(集团)公司 冷弯直缝高精度圆管成型方法
CN107983811B (zh) * 2017-11-30 2019-05-17 武汉钢铁江北集团冷弯型钢有限公司 一种d形钢管的辊弯成型方法
DE102020215091A1 (de) 2020-12-01 2022-06-02 Sms Group Gmbh Verfahren zur Vorformung von Metallblech sowie Computerprogramm und Einrichtung zur Durchführung des Verfahrens

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US854136A (en) * 1906-02-12 1907-05-21 Wiet Goethe Company Tube-forming machine.
FR926683A (fr) * 1945-12-14 1947-10-08 Machine continue pour l'obtention à partir d'une tôle plate, de tubes cylindriques, coniques ou de toute autre forme et dimension
US2736284A (en) * 1950-09-02 1956-02-28 Walker Mfg Company Of Wisconsi Muffler shell forming machine
US2948324A (en) * 1955-10-18 1960-08-09 Pirelli General Cable Works Manufacture of tubing and tubular sheathing
US3417591A (en) * 1965-10-21 1968-12-24 Torrance Specialty Fixtures In Tube mill
US3472053A (en) * 1967-02-10 1969-10-14 Yoder Co Tube mill
DE1926750A1 (de) * 1969-05-24 1970-12-23 Demag Ag Vorrichtung fuer die Formgebung von Schlitzroehren
DE2208392C3 (de) * 1972-02-23 1978-09-14 Felten & Guilleaume Carlswerk Ag, 5000 Koeln Verfahren und Vorrichtung zum Herstellen von Längsnahtrohren
US3903723A (en) * 1973-04-30 1975-09-09 Dan L Colbath Roll-forming machine for making articles having varying cross-sectional configurations
AT329948B (de) * 1974-07-31 1976-06-10 Krems Huette Gmbh Verfahren und vorrichtung zum herstellen von geschweissten rohren verschiedener dimensionen

Also Published As

Publication number Publication date
US4530225A (en) 1985-07-23
EP0014813A1 (fr) 1980-09-03
DE2906692C2 (de) 1985-02-21
DE2906692A1 (de) 1980-08-21
ATE1739T1 (de) 1982-11-15
SU1080733A3 (ru) 1984-03-15

Similar Documents

Publication Publication Date Title
DE60131788T2 (de) Profilwalzmaschine
EP0014813B1 (fr) Procédé de fabrication de tuyaux fendus pour une machine à souder des tubes et dispositif pour la mise en oeuvre de ce procédé
DE3529160C2 (fr)
EP0289748B1 (fr) Outil de calibrage d'une machine pour souder longitudinalement les corps arrondis cylindriques des boîtes
EP0910486A1 (fr) Procede et dispositif de pliage de profiles a postes modulaires multiples
DE2650965B2 (de) Biegevorrichtung für Rohre
DE3885019T2 (de) Verfahren und Vorrichtung zum Richten eines metallischen Bandes.
DE2420690B2 (de) Vorrichtung zum biegen von rohrabschnitten
DE2918813A1 (de) Vorrichtung zum biegen von metallstaeben
DE2650357A1 (de) Verfahren und vorrichtung zur herstellung kreisfoermig gebogener werkstuecke aus einem geraden profilstrang, insbesondere von felgen fuer speichenraeder
DE69911094T2 (de) Verfahren und Vorrichtung zum Richten von Metallprofilen und dergleichen
EP0632788A1 (fr) Procede et machine pour l'enroulement d'une bande de papier ou de carton
DE2529466B2 (de) Verfahren und vorrichtung zum herstellen laengsnahtgeschweisster rohre verschiedener durchmesser
DE2716940C3 (de) Formgerüst zum Runden von Blechstreifen für Längsnahtrohre
DE4210227C2 (fr)
EP0321685B1 (fr) Procédé pour soutenir des poutrelles
DE19508864C1 (de) Maschine zum Ummanteln von länglichen Werkstücken
DE3810611C2 (fr)
DE2502651B2 (de) Richtmaschine für Stangen und dickwandige Rohre
DE68915247T2 (de) Automatisierbare Rundwalzeneinrichtung mit verzahnten Walzen.
WO1999051375A1 (fr) Procede et dispositif pour la production de segments de ressort a ruban cintres
DE3940984A1 (de) Verfahren und vorrichtung zum biegen von blechteilen zu schalen oder rohren (zentro-geometrisches-rollbiegeverfahren)
DE2203913A1 (de) Verfahren und vorrichtung zum ankuppen von drahtpinnen
DE2739734C2 (de) Stütz- und Führungseinrichtung für gegossene Stränge
DE2833096C3 (de) Formstation für Schraubennahtrohre

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

Designated state(s): AT FR GB IT

17P Request for examination filed

Effective date: 19810218

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO MILANO S.P.A.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): AT FR GB IT

REF Corresponds to:

Ref document number: 1739

Country of ref document: AT

Date of ref document: 19821115

Kind code of ref document: T

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

Ref country code: FR

Payment date: 19841129

Year of fee payment: 6

Ref country code: AT

Payment date: 19841129

Year of fee payment: 6

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

Ref country code: AT

Effective date: 19851116

GBPC Gb: european patent ceased through non-payment of renewal fee
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: 19860731

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

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

Ref country code: GB

Effective date: 19881118

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