EP0014813A1 - 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

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Publication number
EP0014813A1
EP0014813A1 EP79730005A EP79730005A EP0014813A1 EP 0014813 A1 EP0014813 A1 EP 0014813A1 EP 79730005 A EP79730005 A EP 79730005A EP 79730005 A EP79730005 A EP 79730005A EP 0014813 A1 EP0014813 A1 EP 0014813A1
Authority
EP
European Patent Office
Prior art keywords
bending
plates
contour
rollers
arc
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
EP79730005A
Other languages
German (de)
English (en)
Other versions
EP0014813B1 (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

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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
    • 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 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 of 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 mounting of the bending rollers.
  • the invention aims to provide a method with which the changeover time of the contour bending device can be shortened and the structural design of the contour bending device can be made cheaper.
  • the object is achieved with the features of the characterizing part of claim 1.
  • a set of shaping tools is therefore available, from which only one group is picked 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.
  • a method which derives from the contour bending - Device according to claim 3 has the particular advantage that the plate-shaped configuration of the dies leads to a particularly simple design of the shape of steps. It is appropriate according to claim 4 to use each of the two sides of the plate for the attachment of roles.
  • the plates have 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 if the arc curvature differs 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 has remained eight.
  • the width of the band for producing 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 in the row under "508 ⁇ " is not only identical in radius of curvature, but also in terms of tool length in terms of tool arc, 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 is shifted for the conversion of the device for production 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 stage 3 is composed of bending rollers 4 and 5 which are arranged as closely as possible.
  • the rollers 4 are covex and the rollers 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 coincides with 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 fixedly fixed in the cassette plate, namely in bearing blocks 9.
  • Fig. 4 9 provide the bearing block for the bending rollers 4 a polygonal configuration corresponding to the circular arc g enschlitz 6 forth.
  • 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 seated at the upper ends of the roller arches, similar to the bearing blocks 12 in FIG. 4.
  • the arc length of the segments 15 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 strip 16 unwound from a coil is fed to a driving roll stand 17 and receives the contour of the forming step 3 1 of the cassette plate 7 1 therein.
  • the contour bending device consists of eight mold stages and thus eight cassette plates 7, only a few of which are shown.
  • Fig. 6 leads to Fig. 7; 7 is the overall system of the 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.
  • this route is a track 21 on which a second cassette holder 22, which holds 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 similarly 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 related to the penultimate of the five rows of sheets in FIG.
  • the number of bending rolls in the roll row of the pipe welding machine As far as the aim is to dimension the rolls as small as possible, it depends on the size of the pipe welding machine. This has limits to the practical size. With 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 borderline 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)
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
DE2906692 1979-02-19
DE2906692A DE2906692C2 (de) 1979-02-19 1979-02-19 Verfahren zur Herstellung von Schlitzrohren für eine Rohrschweißmaschine und Vorrichtung zur Durchführung des Verfahrens

Publications (2)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107983811A (zh) * 2017-11-30 2018-05-04 武汉钢铁江北集团有限公司 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

Families Citing this family (10)

* 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
DE69021065T2 (de) * 1989-08-09 1996-03-21 Keith Sylvester Barraclough Walzwerk.
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

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US2948324A (en) * 1955-10-18 1960-08-09 Pirelli General Cable Works Manufacture of tubing and tubular sheathing
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
DE2208392A1 (de) * 1972-02-23 1973-09-13 Felten & Guilleaume Kabelwerk Verfahren und vorrichtung zum biegen von metallband zu einem laengs der bandkanten verschweissbaren schlitzrohr in einer von band durchlaufenen formvorrichtung
DE2529466A1 (de) * 1974-07-31 1976-02-19 Huette Krems Ges Mbh Krems Verfahren und vorrichtung zum herstellen von geschweissten rohren verschiedener dimensionen

Family Cites Families (4)

* 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.
US2736284A (en) * 1950-09-02 1956-02-28 Walker Mfg Company Of Wisconsi Muffler shell forming machine
US3417591A (en) * 1965-10-21 1968-12-24 Torrance Specialty Fixtures In Tube mill
US3903723A (en) * 1973-04-30 1975-09-09 Dan L Colbath Roll-forming machine for making articles having varying cross-sectional configurations

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US2948324A (en) * 1955-10-18 1960-08-09 Pirelli General Cable Works Manufacture of tubing and tubular sheathing
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
DE2208392A1 (de) * 1972-02-23 1973-09-13 Felten & Guilleaume Kabelwerk Verfahren und vorrichtung zum biegen von metallband zu einem laengs der bandkanten verschweissbaren schlitzrohr in einer von band durchlaufenen formvorrichtung
DE2529466A1 (de) * 1974-07-31 1976-02-19 Huette Krems Ges Mbh Krems Verfahren und vorrichtung zum herstellen von geschweissten rohren verschiedener dimensionen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107983811A (zh) * 2017-11-30 2018-05-04 武汉钢铁江北集团有限公司 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

Also Published As

Publication number Publication date
DE2906692C2 (de) 1985-02-21
DE2906692A1 (de) 1980-08-21
US4530225A (en) 1985-07-23
SU1080733A3 (ru) 1984-03-15
EP0014813B1 (fr) 1982-11-03
ATE1739T1 (de) 1982-11-15

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