EP0907432B1 - Metallplattenbiegevorrichtung mit offsetdruckrollen - Google Patents

Metallplattenbiegevorrichtung mit offsetdruckrollen Download PDF

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Publication number
EP0907432B1
EP0907432B1 EP97919438A EP97919438A EP0907432B1 EP 0907432 B1 EP0907432 B1 EP 0907432B1 EP 97919438 A EP97919438 A EP 97919438A EP 97919438 A EP97919438 A EP 97919438A EP 0907432 B1 EP0907432 B1 EP 0907432B1
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EP
European Patent Office
Prior art keywords
support
rolls
roll
supported
bending
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 - Lifetime
Application number
EP97919438A
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English (en)
French (fr)
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EP0907432A1 (de
Inventor
Michel Gravier
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.)
Jammes Industrie SA
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Jammes Industrie SA
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    • 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 present invention is in the field working with sheet materials, such as sheets, with a view to bending them, and more precisely it has for object a machine, called “rolling machine”, intended to bend the sheets according to the preamble of claim 1.
  • the object of the present invention is to make available to non-specialized workshops a bending machine which authorizes the bending of sheets fairly wide, thin, and / or made of a material of low hardness.
  • the support roller fixed axis is arranged above the set of rollers pressers so that these can be maneuvered vertically from bottom to top by the chocks sloping when they are applied against the sheet metal to be bent, and from top to bottom by the effect of their weight after the bending operation.
  • the first difficulty lies in the fact that, so that the contact lines of pressure rollers with the support roller can be fairly close to each other, relative to the measurement diameters of the pressure rollers, so that a sheet introduced between the first pressure roller and the support roller, comes into oblique contact with the upper quarter of the second pressure roller, it is necessary that the diameter pressure rollers is much lower (about 1/3) the diameter of the support roller, and that these rollers are as close as possible to each other; or expected that the flexural strength of a cylindrical beam varies roughly like the power four (D4) of its diameter, their small diameter will cause flexibility important, in practice unacceptable, rollers pressers.
  • D4 power four
  • the term "as close as possible” means that their center distance e is between d and 1, 5x d , d being the diameter, preferably identical for each, of the pressure rollers, d being itself between 0.2xD and 0.5xD, D being the diameter of the support roller, the effective length of the latter being between 5xD and 10xD, the smallest bending diameter it is possible to obtain with a specific machine being between approximately 1.2 and 1.4xD; it will be noted that the choice of these dimensional relationships also comes under the invention because of the innumerable theoretical possibilities which they offer, a large number of which would prove to be inappropriate in practice, and that only an intuitive appreciation based on a great experience has allowed to eliminate a priori.
  • a solution proposed by the invention to solve the problem of bending the rollers pressers consisted in dividing the pressure rollers into sections, each section being supported in rotation, at its ends, by a support piece, the support pieces themselves resting on a beam, preferably in I, so-called intermediate, itself taking indirect support on the general frame of the machine.
  • the rollers being shaped in sections, the problem of the "marking" of the sheets by the end edges of the sections; this problem was solved by shifting the sections in the axial direction, so that the edge end of a section of a pressure roller either always opposite a cylindrical part of a section on the other roller, except for the ends of the rollers themselves; preferably the offset chosen is only slightly more than the thickness of the pieces support, which thickness has been minimized by a judicious choice of the suspension of the sections, and thanks a Z-shaped configuration of the support parts; thanks to what, even very thin sheets can be bent without being marked.
  • a second solution proposed by the invention more particularly suitable for bending following a smaller radius, but always considering the problem of bending, consisted in adding to the pressure rollers divided into sections supported in rotation, a second stage of small diameter rollers arranged above the previous ones and also supported by the same support parts conformed in Z.
  • the rolls of the second stage are continuous over the whole sheet passage width, and are based either on cut rollers with Z-shaped support pieces, more simply on rollers spread over the width of passage and supported by ordinary support parts.
  • a rolling machine of the invention consists mainly of a frame made of a massive 1-I frame beam, a roller upper large diameter D, called support roller 2, towards which can be requested from bottom to high, two trains 3,4 of smaller diameter rollers, said pressure rollers, each consisting of a plurality sections of rollers; pressure rollers are supported through support parts such as 5 by an I-beam called intermediate 6.
  • the intermediate beam 6 can be operated in vertical translation, between guides ends 26, by an operating device of the kind ramp 7 of cams and sloping wedges 8 resting on the beam-frame 1; the ramp 7 is moved in horizontal translation by a couple of jacks such as 9; the setting of the amplitude of the vertical displacement of the support beam, so the gap between the pressure rollers and the support roller, gap which determines the bending radius, is operated by the horizontal displacement of a stop 10, by means of a screw 11 which can be driven manually in rotation by a crank with gravitational indicator dial 12.
  • Support roller 2 is supported at a first end 13, from which it is rotated by a hydraulic motor 14, by a first bearing 15 very robust with double span, and at its other end 16 by a retractable bearing 17 formed in a tiltable part called "gate" 18; this arrangement allows the axial removal of the sheets after bending
  • the pressure rollers each consist of a plurality of sections 31, .32, 33 .. of equal length, and it is noted that the adjacent ends of four adjacent sections are supported by a common support part, such as 51, consisting of a thin wall 53 in Z forming with a sole 54 an angle bracket assembly, this conformation gives the support part a particularly high rigidity, which allows the desired small thickness of the wall and allows two adjacent ends of two sections of the same roller to be as close as possible and thus to have to offset two facing rollers, for example 31 and 41, only by a minimum distance l
  • the roller sections each consist of a hollow cylinder, such as 44 visible in section, rotatably mounted on a coaxial central shaft 45 by bearings such as 46 arranged in the vicinity of each end of the section; the tree being itself fixedly engaged in a bore opening 57 of the wall adjacent 53 of a support piece 5 (fig.4); each bore, except for those of the end support parts rollers, supports two neighboring trees coaxial.
  • Ramp 7 itself is maneuverable in thrust by a couple of hydraulic cylinders such as 9 through a cross piece called "stirrup" 23, to which the ramp is connected.
  • the gate 18 to bearing 17 is articulated on the frame 1 to be able to tilt (arrow 19) under the effect of a jack 20 between a vertical position in which the bearing 17 encloses the cylindrical-conical end 16, of the support roller 2, and a horizontal position (not shown) in which it releases the end roller to allow removal of the bent sheet.
  • a jack 20 between a vertical position in which the bearing 17 encloses the cylindrical-conical end 16, of the support roller 2, and a horizontal position (not shown) in which it releases the end roller to allow removal of the bent sheet.
  • the gate cylinder 20, the cylinders 9 for operating the ramp 7 and the hydraulic motor 14 for driving the support roller 2 are supplied with fluid under pressure by a common hydraulic power plant not shown but which is advantageously fixed in the vicinity from the end of the general frame where the engine is located.
  • the adjustment means mainly constituted by gravitational dials
  • the operator who does not have to have a particular qualification, to make the various adjustments from an empirically established table, for obtain the desired bend.
  • the hydraulic motor can be replaced by a simple electric gear motor or by a brushless type electric motor, and the cylinders hydraulic by ball screws and spindle motor; we also note that the manual operating device can adjustment means can be replaced by a set placed under digital control so that you can do vary the bending radius in a programmed manner during of the passage of the same sheet, and thus finally obtain an oval, elliptical or polygonal shell with angles rounded.
  • a rolling machine relaunch of the second solution has a stage lower rollers such as 31, of axis 31 ′, which are at number of three and which serve as support for the two pressure rollers 32, of axis 32 ', of small diameter and enough close together, located above them.
  • roller 32 of the previous figure is a full roller while a support roller 31 is mounted on a bearing balls on a fixed shaft 33; rollers 31 and 32 are supported by support parts 34 in Z such as the part of fig. 8, similar to that of fig, 4, on which are shown the axes 31 'and 32' of the rollers
  • the pressure rollers 42 are continuous, that is to say that they extend over the entire width of passage of the sheets, lengthwise of the rolling machine; Rolls; Coils 42 are supported from place to place by couples rollers such as 58 arranged on either side of a intermediate support part such as 44, or on one side an end support piece such as 45.
  • the machine can be equipped with automatic variation means radius of curvature during the rolling operation, so as to produce ferrules (rolled sheets) with profile non-circular (for example elliptical, or triangular to rounded corners, etc.).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Veneer Processing And Manufacture Of Plywood (AREA)
  • Manufacture Of Wood Veneers (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Press Drives And Press Lines (AREA)

Claims (9)

  1. Maschine zum Rundbiegen von Blechen, gennant "Biegemaschine", vom Typ einer Biegemaschine, die im wesentlichen gebildet wird aus einer oberen Walze, genannt Stützwalze (2), um die das Blech nach dem Rundbiegen gerollt wird and die an einem Ende, genannt das zweite (16), durch ein einziehbares Lager (17) getragen wird, um durch eine axiale Translationsbewegung das Abziehen des gerollten Blechs zu ermöglichen, und aus unteren glatten Walzen, gennant Presswalzen (3,4), die dazu bestimmt sind, auf die Stützwalze Druck auszuüben, dadurch gekennzeichnet,
    dass die Stützwalze (2), um die das Blech nach dem rundbiegen gerollt wird, an ihrem anderen Ende, genannt das erste (13), mit einem Motor (14) verbunden ist und an diesem ersten Ende durch ein fixes Lager (15) getragen wird, wobei die Achse der Stützwalze fix bleibt, und
    dass die Presswalzen (3,4,42,32,33,43) paarweise in einem fixen Achsabstand (e) angeordnet sind und getragen werden durch eine Vielzahl von Lagern (5,51,52) oder Walzen (31,43), die ihrerseits durch einen Träger (6) getragen werden, der seinerseits unter Zwischenschaltung einer Betätigungsvorrichtung auf dem Rahmen (1) in vertikaler Translationsbewegung ruht.
  2. Maschine nach dem Anspruch 1, dadurch gekennzeichnet,
    dass der Achsabstand e der Presswalzen (3,4) zwischen d und 1,5 x d beträgt, wobei d ihr Durchmesser ist, der vorzugsweise für jede identisch ist, und wobei d selbst zwischen 0,2 x D und 0,5 x D beträgt, wobei D der Durchmesser der Stützwalze (2) ist und die effektive Länge L dieser letztgenannten selbst zwischen 5 x D und 10 x D beträgt.
  3. Maschine nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet,
    dass die Presswalzen (3,4,32) in Abschnitte (31,32,32',33,...) unterteilt sind, wobei jeder Abschnitt an seinen Enden dadurch ein Tragteil (5,51,52,...) drehbar gehalten wird, wobei die Tragteile ihrerseits auf dem Zwischenträger (6) ruhen.
  4. Maschine nach dem Anspruch 3, dadurch gekennzeichnet,
    dass die Abschnitte (31,32,33) einer Walze in bezug auf jene (41,42,43) der anderen Walze in Achsrichtung verschoben sind und von Tragteilen (51) getragen werden, die durch eine dünne, Z-förmige Wand (53) gebildet werden, die mit einer Sohle (54) ein Winkelstück bildet, so dass sich der äussere Rand eines Abschnitts einer Presswalze immer gegenüber von einem zylindrischen Teil eines Abschnitts der anderen Walze befindet, mit Ausnahme der Enden der Walzen selbst ; (fig 1-4).
  5. Maschine nach Anspruch 3, gekennzeichnet,
    dass die Presswalzen (32) in Abschnitt eine zweite Etage von Presswalzen (32, Achse 32' mit kleinem Durchmesser bilden, die über die vorausgegangenen Walzen (31, Achse 31'), angeordnet sind, und die selbst von Z-formigen Tragteilen (51) getragen werden, die Presswalzen (32) und Stütze (31) in unterbrochenen Abschnitten sind.
  6. Maschine nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet,
    dass die Walzen (42) auf der ganzen Laufbreite der Bleche kontinuierlich sind und eine zweite Etage der Walzen bilden, die entweder über die Abschnitte (31) der Walzen oder über die Rollen (58).
  7. Maschine nach einem der Ansprüche 3 bis 6, dadurch gekennzeichnet,
    dass die Rollenabschnitte jeweils durch einen Hohlzylinder (44) gebildet werden, der durch Wälzlager (46), die jeweils in der Nähe der Enden des Abschnitts angeordnet sind, drehbar auf einer koaxialen zentralen Welle (45) montiert ist, wobei die Welle selbst fix in eine Durchgangsbohrung (57) der benachtbaren Wand (53) eines Tragteils (5,51) eingefügt ist, wobei jede Bohrung, mit Ausnahme jener der Tragteile am Ende der Walzen, zwei benachtbarte koaxiale Wellen trägt.
  8. Maschine nach einem der vorausgegangen Ansprüche, dadurch gekennzeichnet,
    dass die Stützwalze an einem ersten Ende (13) durch ein erstes Lager (15) mit doppelter Auflagefläche und an ihrem anderen Ende (16) durch ein einziehbares Lager (17), das in einem kippbaren Teil (18), gennant Gatter, vorgesehen ist, getragen wird,
    und dass das Gatter (18) mit Lager (17) am Rahmen (1) angelenkt ist, um unter der Wirkung eines Zylinders (20) zwischen einer vertikalen Position, in der das Lager (17) ein zylindrisch-konisches Ende (16) der Stützwalze (2) umschliesst, und einer horizontalen Position, in der es das Ende der Walze freigibt, um das Abziehen des rundgebogenen Blechs zu ermöglichen, kippen zu können (Pfeil 19).
  9. Maschine nach einem der vorausgegangenen Ansprüche, dadurch gekennzeichnet, dass die Betätigungsvorrichtung in vertikaler Translationsbewegung eine Vorrichtung mit "Nockenrampe" (23) und "geneigten Keilen" (8) ist.
EP97919438A 1996-06-06 1997-03-28 Metallplattenbiegevorrichtung mit offsetdruckrollen Expired - Lifetime EP0907432B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9607375 1996-06-06
FR9607375A FR2750061B1 (fr) 1996-06-06 1996-06-06 Machine de cintrage de toles a rouleaux presseurs decales
PCT/FR1997/000563 WO1997046336A1 (fr) 1996-06-06 1997-03-28 Machine a cintrage de toles a rouleaux presseurs decales

Publications (2)

Publication Number Publication Date
EP0907432A1 EP0907432A1 (de) 1999-04-14
EP0907432B1 true EP0907432B1 (de) 2001-06-13

Family

ID=9493034

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97919438A Expired - Lifetime EP0907432B1 (de) 1996-06-06 1997-03-28 Metallplattenbiegevorrichtung mit offsetdruckrollen

Country Status (12)

Country Link
US (1) US6079247A (de)
EP (1) EP0907432B1 (de)
CN (1) CN1089282C (de)
AT (1) ATE202020T1 (de)
AU (1) AU2391497A (de)
CA (1) CA2257192A1 (de)
DE (2) DE69705221D1 (de)
ES (1) ES2158553T3 (de)
FR (1) FR2750061B1 (de)
TW (1) TW383236B (de)
WO (1) WO1997046336A1 (de)
ZA (1) ZA974614B (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6918306B1 (en) * 2003-09-08 2005-07-19 The United States Of America As Represented By The Secretary Of The Navy Adjustable flexure loading apparatus for testing long span beams
CN102950174A (zh) * 2012-11-19 2013-03-06 无锡九条龙汽车设备有限公司 一种下弯曲辊装置
JP6435205B2 (ja) * 2015-02-06 2018-12-05 株式会社エフテック ロール成形装置
CN106140912A (zh) * 2015-04-15 2016-11-23 浙江工商职业技术学院 金属带压印机压印深度调整机构
CN107755479B (zh) * 2017-11-16 2023-07-25 安徽德系重工科技有限公司 一种分体式四辊波纹卷板机
CN108817149B (zh) * 2018-05-29 2019-08-30 江苏金泽重机集团有限公司 一种水平下调式数控卷板机
CN110962198B (zh) * 2019-12-23 2021-08-10 河北金融学院 原木卷曲成型装置
CN112108851A (zh) * 2020-10-20 2020-12-22 广东昌恒智能科技有限公司 一种轴承压入滚筒装置及方法
CN113210467A (zh) * 2021-05-21 2021-08-06 安徽省航天机床制造股份有限公司 一种带支撑辊的变中心距卷板机

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB189503142A (en) * 1895-02-13 1895-03-23 Wallace Fairweather Improvements in Roller Bending-machines.
DE420013C (de) * 1923-07-25 1925-10-16 Hugo Junkers Dr Ing Vorrichtung zur Herstellung von Laengsnaht-Rohren
FR974789A (fr) * 1948-04-21 1951-02-26 Joshua Bigwood & Son Perfectionnements apportés aux machines pour courber les tôles
US4056962A (en) * 1976-08-13 1977-11-08 Edeco-West, Inc. Rolling machine assembly
FR2528334A1 (fr) * 1982-06-09 1983-12-16 Jammes Ind Sa Machine de cintrage incorporant des moyens de maintien paralleles des rouleaux
FR2528335A1 (fr) * 1982-06-09 1983-12-16 Jammes Ind Sa Machine de cintrage a rouleaux creneles incorporant des moyens de prise en compte de l'epaisseur des toles et des moyens compensateurs de fleche
US4706488A (en) * 1984-05-16 1987-11-17 Kaiser Steel Corporation Method of roll forming cylindrical pipe
FR2637206B1 (fr) * 1988-10-05 1994-05-27 Jammes Ind Sa Rouleuse a rouleaux creneles automatisable
JPH03118924A (ja) * 1989-10-01 1991-05-21 Iwate Pref Gov Chiyuushiyou Kigyo Shinko Koushiya ベンディング装置
CN2136701Y (zh) * 1992-07-25 1993-06-23 南通市重型机器厂 卷制薄板的小型卷板机

Also Published As

Publication number Publication date
US6079247A (en) 2000-06-27
ES2158553T3 (es) 2001-09-01
ATE202020T1 (de) 2001-06-15
DE69705221T4 (de) 2003-05-08
EP0907432A1 (de) 1999-04-14
DE69705221D1 (de) 2001-07-19
CN1089282C (zh) 2002-08-21
DE69705221T2 (de) 2002-03-14
TW383236B (en) 2000-03-01
ZA974614B (en) 1997-12-30
CA2257192A1 (fr) 1997-12-11
FR2750061A1 (fr) 1997-12-26
CN1221360A (zh) 1999-06-30
FR2750061B1 (fr) 1998-09-11
WO1997046336A1 (fr) 1997-12-11
AU2391497A (en) 1998-01-05

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