EP0031822B1 - Verfahren zum biegen von blechen und vorrichtung zur durchführung des verfahrens - Google Patents

Verfahren zum biegen von blechen und vorrichtung zur durchführung des verfahrens Download PDF

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Publication number
EP0031822B1
EP0031822B1 EP80901210A EP80901210A EP0031822B1 EP 0031822 B1 EP0031822 B1 EP 0031822B1 EP 80901210 A EP80901210 A EP 80901210A EP 80901210 A EP80901210 A EP 80901210A EP 0031822 B1 EP0031822 B1 EP 0031822B1
Authority
EP
European Patent Office
Prior art keywords
bending
sheet metal
sheet
beads
pair
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
EP80901210A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0031822A1 (de
Inventor
Hans Zeman
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.)
Zeman & Co GmbH
Original Assignee
Zeman & Co GmbH
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 Zeman & Co GmbH filed Critical Zeman & Co GmbH
Publication of EP0031822A1 publication Critical patent/EP0031822A1/de
Application granted granted Critical
Publication of EP0031822B1 publication Critical patent/EP0031822B1/de
Priority to KE346984A priority Critical patent/KE3469A/xx
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
    • B21D5/14—Bending sheet metal along straight lines, e.g. to form simple curves by passing between rollers

Definitions

  • the invention relates to a method for bending sheet metal with continuous profile shape in one direction, consisting of inner and outer belts with intermediate webs, for. B. of sheets with trapezoidal or triangular profiling, in which in the area of the material compression occurring during bending, d. H. continuous longitudinal beads are formed in the compressive stress area (inner belts).
  • Sheets with profiling in particular so-called trapezoidal sheets, can hardly or only be bent with great effort around axes running perpendicular to the profiling. The reason for this is that tensile and compressive stresses occur during bending, but the sheets used can probably absorb tensile stresses, but not compressive stresses. If you try e.g. B. to bend a trapezoidal sheet in the usual way, there are bulges in the compressive stress range, the extent of which is within tolerable limits only from a bending radius of about 25 m.
  • a method for bending trapezoidal sheets has become known, in which depressions running at a distance from one another and transverse to the profiling are embossed into the sheet. In this way, the trapezoidal sheet can actually be bent, but there are serious disadvantages to the process. On the one hand, the process is very slow and expensive because it works gradually and not continuously. On the other hand, the sheet made by the known method is hardly resilient, since it easily collapses in the manner of an accordion bellows because of the transverse depressions.
  • a device for bending a sheet with a trapezoidal profile is also known (US Pat. No. 4,154,077), in which a roller of a pair of rollers has a circumferential groove in the region of the inner belts of the continuous sheets, into which the sheet can escape during the shaping process , whereas the assigned roller has a smooth surface.
  • a form-fitting formation of beads is just as little thought here as a formation of beads in the area of the webs of the trapezoidal sheet.
  • AT-B-313 684 describes a method and an apparatus for bending metal sheets in two spatial directions, in particular in a part of an annular bead surface.
  • Specially shaped rollers and a specific position of these rollers with respect to the rolling direction ensure that a sheet is stretched the most in the vicinity of its central axis, the stretching decreasing towards the edge.
  • the formation of beads on the longitudinal edges is mentioned, but these beads do not serve to absorb material deformations, but rather represent conventional reinforcing beads.
  • At least one bead is additionally formed in the webs during bending in the sheet and that existing beads are positively reinforced by appropriate profiling of the bending tools during the bending.
  • profiled sheets can be bent surprisingly easily and at high speed. After bending, the sheets also have at least the same strength as before. Since the compressive stresses only occur in the inner belts or in the inner web parts during bending, it is sufficient to form beads in these areas.
  • FIGS. 1a and b show a section through a trapezoidal sheet before or after bending
  • FIGS. 2 and 3 show a schematic side view of an apparatus for carrying out the method according to the invention
  • FIG. 4 shows a section of a trapezoidal sheet during the bending between a pair of profile rolls.
  • the trapezoidal sheet 1 shown in FIG. 1a with the usual profile shape is to be bent around an axis that runs normal to the direction of the profile.
  • continuous longitudinal beads 5 are formed in the sheet during bending, which are in the region of the compressive stresses that occur and are indicated in FIG. 1. Due to the formation of the beads at the same time as the bending, the upsets are absorbed by the beads, so that the sheet is present in the bent state without warping or the like, has an ongoing appearance and has also gained in terms of its strength.
  • a roller roll forming machine is suitable for bending profiled sheets according to the inventive method.
  • 2 or 3 consists of a pair of rollers 6, 7, which is preceded by a first bending roller 8 and a second bending roller 9 is arranged downstream. All rollers are designed as profile rollers; their profile corresponds to the sheet profile and at least the rollers 6, 7 of the pair of rollers are also profiled according to the beads to be produced.
  • FIG. 4 shows a trapezoidal sheet 1 between the rollers 6 and 7 of the pair of rollers.
  • the beads 5 are made exactly in the middle of the outer or inner belts and the webs.
  • the upper roller 6 is mounted and driven in a stationary manner, but the lower roller 7 can be set against the roller 6, as a result of which the roller gap can be adjusted.
  • the sheet 1 runs from the right in the direction A via the bending roller 8, which is not employed here, into the nip of the rollers 6, 7 and then over the bending roller 9, whose degree of inclination determines the bending radius.
  • the roll gap or the roll profiles are dimensioned in such a way that the compression in the bead area that occurs during bending contributes to the bead formation. It is thus achieved that the inevitable material compression occurs in the form of beads when bending in precisely defined zones.
  • the sheet 1 can be pre-bent by means of the first bending roller 8 and brought to the final bending radius by means of the second bending roller 9.
  • trapezoidal sheets made of steel or aluminum could be bent from sheet thicknesses of 0.6 mm and with trapezoidal heights of up to 200 mm, bending radii of less than 4.50 m being achieved. In some cases, the production of several beads next to each other can also be advantageous.
  • the method according to the invention is described using a trapezoidal sheet, the method can also be applied to other profile shapes, e.g. B. corrugated sheets, sheets with triangular or rectangular profile, etc. It is only essential that the beads are formed during bending and in the area of the compressive stresses occurring during bending.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
EP80901210A 1979-07-10 1981-02-09 Verfahren zum biegen von blechen und vorrichtung zur durchführung des verfahrens Expired EP0031822B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KE346984A KE3469A (en) 1979-07-10 1984-10-17 Method for bending sheets and device for implementing the method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT481579A AT359805B (de) 1979-07-10 1979-07-10 Verfahren zum biegen von blechen und vor- richtung zur durchfuehrung des verfahrens
AT4815/79 1979-07-10

Publications (2)

Publication Number Publication Date
EP0031822A1 EP0031822A1 (de) 1981-07-15
EP0031822B1 true EP0031822B1 (de) 1983-05-04

Family

ID=3568678

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80901210A Expired EP0031822B1 (de) 1979-07-10 1981-02-09 Verfahren zum biegen von blechen und vorrichtung zur durchführung des verfahrens

Country Status (25)

Country Link
US (1) US4619131A (xx)
EP (1) EP0031822B1 (xx)
AR (1) AR220850A1 (xx)
AT (1) AT359805B (xx)
AU (1) AU546944B2 (xx)
BE (1) BE884095A (xx)
BG (1) BG42183A3 (xx)
BR (1) BR8008743A (xx)
CA (1) CA1136531A (xx)
CS (1) CS220329B2 (xx)
DD (1) DD151885A5 (xx)
DE (1) DE3062964D1 (xx)
DK (1) DK154479C (xx)
ES (1) ES493078A0 (xx)
GR (1) GR69202B (xx)
HU (1) HU178885B (xx)
IT (1) IT1127522B (xx)
MX (1) MX154475A (xx)
NO (1) NO151576C (xx)
OA (1) OA06578A (xx)
PL (1) PL225559A1 (xx)
PT (1) PT71505A (xx)
WO (1) WO1981000222A1 (xx)
YU (1) YU44191B (xx)
ZA (1) ZA804046B (xx)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK8404709A (xx) * 1983-10-05 1985-04-06
DE3738566A1 (de) * 1987-04-01 1988-10-13 Spaeth Gmbh & Co Kg Stahlbau B Verfahren und vorrichtung zum biegen eines bleches
US4962622A (en) * 1989-06-01 1990-10-16 H. H. Robertson Company Profiled sheet metal building unit and method for making the same
US5056348A (en) * 1989-06-01 1991-10-15 Robertson-Ceco Corporation Method of making a profiled sheet metal building unit
DE4425149A1 (de) * 1994-07-15 1996-01-18 Hoesch Siegerlandwerke Gmbh Gebogenes Trapezprofilblech für Dachkonstruktionen und Verfahren zur Herstellung eines derartigen Profilblechs
DE4442211A1 (de) * 1994-11-29 1996-06-05 Hoesch Siegerlandwerke Gmbh Gebogenes Trapezprofilblech für Dachkonstruktionen und Verfahren zur Herstellung eines derartigen Profilblechs
DE102005044423A1 (de) * 2005-09-16 2007-03-22 Blanco Gmbh + Co Kg Verfahren zum Erzeugen einer Abkantung an einem Blechelement
CA2575279A1 (en) * 2006-01-30 2007-07-30 Link-Pipe Inc Apparatus and method for sleeve or sheet corrugation
US20110232203A1 (en) * 2010-03-24 2011-09-29 M.I.C. Industries, Inc. System and method for attaching a wall to a building structure
CN106623528B (zh) * 2017-01-03 2019-02-05 昆明理工大学 一种直线型冷弯钢板桩的辊式连续冷弯成型方法
CN113745635B (zh) * 2021-11-05 2022-03-01 三一技术装备有限公司 叠片装置及叠片方法

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1354951A (en) * 1919-10-04 1920-10-05 Albert J Buhtz Hoop-forming machine
US1793351A (en) * 1929-03-13 1931-02-17 R J Bell Company Inc Barrel-forming machine
US2093933A (en) * 1935-05-13 1937-09-21 Kelsey Hayes Wheel Co Rolling machine
US2279197A (en) * 1939-08-22 1942-04-07 Budd Edward G Mfg Co Forming machine
US2335028A (en) * 1942-05-05 1943-11-23 Bardwell & Mcalister Pinch type bending roll
US3073021A (en) * 1956-06-06 1963-01-15 Maurice W Goodwill Method of forming modular frameless roof construction
US3051214A (en) * 1958-10-15 1962-08-28 Rutten Marion Machine for edging and forming
US3150707A (en) * 1961-04-27 1964-09-29 Howell Pat Apparatus for making metal building and building elements
US3610011A (en) * 1969-06-02 1971-10-05 Clark J Valentine Unitary roll formed vehicle fender and apparatus and method for producing the same
DE2134036A1 (de) * 1971-07-08 1973-01-18 Kloeckner Werke Ag Verfahren und vorrichtung zur herstellung der kruemmung von profilen, mit einer profilierung versehenen platten, baendern oder dergleichen
AT313684B (de) * 1971-12-28 1974-02-25 Ragailler Franz Verfahren und Einrichtung zur Herstellung von dünnwandigen, großflächigen Profilen
SU519246A1 (ru) * 1974-10-04 1976-06-30 Украинский научно-исследовательский институт металлов Способ гибки профилированных заготовок
DE2506700A1 (de) * 1975-02-18 1976-08-26 Kloeckner Werke Ag Verfahren und vorrichtung zum kruemmen von profilen, profilierten platten, baendern o. dgl.
US4154077A (en) * 1978-03-06 1979-05-15 Field Form, Inc. Apparatus and method for manufacturing curved building panels
US4228672A (en) * 1978-06-05 1980-10-21 The Lockformer Company Rotary notcher and former

Also Published As

Publication number Publication date
BG42183A3 (en) 1987-10-15
PT71505A (de) 1980-08-01
DK154479B (da) 1988-11-21
IT1127522B (it) 1986-05-21
AU546944B2 (en) 1985-09-26
NO151576C (no) 1985-05-08
BR8008743A (pt) 1981-05-05
CA1136531A (en) 1982-11-30
WO1981000222A1 (en) 1981-02-05
YU175180A (en) 1984-12-31
DD151885A5 (de) 1981-11-11
AU6057180A (en) 1981-02-13
ES8105592A1 (es) 1981-07-01
DK154479C (da) 1989-04-10
GR69202B (xx) 1982-05-06
MX154475A (es) 1987-08-28
AR220850A1 (es) 1980-11-28
DK106781A (da) 1981-03-09
NO810788L (no) 1981-03-09
EP0031822A1 (de) 1981-07-15
ATA481579A (de) 1980-04-15
IT8049187A0 (it) 1980-07-08
CS220329B2 (en) 1983-03-25
BE884095A (fr) 1980-10-16
AT359805B (de) 1980-12-10
YU44191B (en) 1990-04-30
HU178885B (en) 1982-07-28
OA06578A (fr) 1981-08-31
DE3062964D1 (en) 1983-06-09
ES493078A0 (es) 1981-07-01
NO151576B (no) 1985-01-21
ZA804046B (en) 1981-02-25
US4619131A (en) 1986-10-28
PL225559A1 (xx) 1981-08-07

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