EP0555274B1 - Biegen von profilierten blechen - Google Patents

Biegen von profilierten blechen Download PDF

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Publication number
EP0555274B1
EP0555274B1 EP91918564A EP91918564A EP0555274B1 EP 0555274 B1 EP0555274 B1 EP 0555274B1 EP 91918564 A EP91918564 A EP 91918564A EP 91918564 A EP91918564 A EP 91918564A EP 0555274 B1 EP0555274 B1 EP 0555274B1
Authority
EP
European Patent Office
Prior art keywords
sheet
clamping means
clamping
ridges
profiled
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
EP91918564A
Other languages
English (en)
French (fr)
Other versions
EP0555274A1 (de
Inventor
Philip Cook
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.)
EURO CLAD LIMITED
Original Assignee
Euro Clad Ltd
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 Euro Clad Ltd filed Critical Euro Clad Ltd
Publication of EP0555274A1 publication Critical patent/EP0555274A1/de
Application granted granted Critical
Publication of EP0555274B1 publication Critical patent/EP0555274B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B21D11/20—Bending sheet metal, not otherwise provided for
    • 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
    • B21D25/00—Working sheet metal of limited length by stretching, e.g. for straightening
    • B21D25/02—Working sheet metal of limited length by stretching, e.g. for straightening by pulling over a die

Definitions

  • This invention relates to apparatus and a method for bending profiled sheet metal transversely to the longitudinally extending ridges and troughs therein.
  • Apparatus for use in plastically deforming metal stock of flat, non-profiled, section such as steel strip.
  • An example of such apparatus is shown in GB-A-932228; the apparatus disclosed comprises first and second gripping means for gripping the metal stock at opposed ends thereof, the first and second gripping means being movable longitudinally relative to one another and pivotable about respective axes, tensioning means being provided for imparting a tensile load in the longitudinal direction of the metal stock, one of the gripping means being provided with a curved surface curving away from the general plane of the metal stock about which surface the metal stock is deformed.
  • Profiled metal panels or sheets are commonly used in the construction industry for roofing or wall panels or the like. They comprise a sheet of metal formed to have longitudinal corrugations or castellations in the form of a series of alternating elongate troughs and ridges. Typically such troughs and ridges are trapezoidal in transverse cross section.
  • GB-A-2153721 discloses apparatus for bending profiled sheet metal. Such apparatus is relatively complex in terms of construction and operation.
  • apparatus for bending profiled metal sheet transversely to the longitudinal direction of troughs and ridges in the profiled sheet which apparatus comprises:
  • the tensile load may be imparted in said sheet by the inertia of the second clamping means as the first clamping means pivots about the first pivot axis causing the second clamping means to move in the longitudinal direction.
  • the first pivot axis is arranged to lie on the general plane of the metal sheet, with, advantageously the second pivot axis also being arranged to lie on the general plane of the metal sheet.
  • the second clamping means is pivotally mounted on a carrier structure which carrier structure is movable along elongate guide members relative to the first clamping means.
  • the tensioning means is in the form of one or more hydraulically actuable cylinder and ram arrangements arranged to impart a force acting on the second clamping means or carrier structure.
  • the tensioning means is operable such that as the second clamping means moves towards the first clamping means, the tension in the metal sheet remains substantially constant.
  • torque means is provided for selectively applying a turning moment to the first clamping means such that it pivots about the first pivot axis.
  • a turning moment may be applied hydraulically by means of a cylinder ram and torque arm arrangement.
  • a method of using apparatus according to the first aspect of the invention to bend profiled sheet metal transversely to the longitudinal direction of troughs and ridges in the profiled sheet which method comprises:
  • the apparatus generally designated 1, has a mounting frame 2 upon which is mounted a forward clamping die structure 3 and rearward clamping die structure 4.
  • the forward clamping die structure comprises a housing 5 for a fixed lower steel clamp 6 and an upper steel clamp 7.
  • the lower clamp 6 is provided with longitudinal ridges and troughs on its upper surface 8 profiled to receive and locate the longitudinally extending ridges and troughs of the metal sheet to be bent.
  • the surface 8 is also profiled in the longitudinal direction of the ridges 9 having a flat portion 10 and a curved die portion 11.
  • the upper clamp 7 is movable in the housing 5 under the influence of hydraulically activated rams 29, along guide posts 14 into clamping engagement with the profiled surface of the lower clamp 6, the lower surface 12 of the upper clamp 7 being profiled complementarily to the surface 8 of the lower clamp 6 such that the profiled sheet to be bent can be clamped therebetween.
  • the surface 12 is generally flat in the direction of the longitudinal ridges 9 and the zone of clamping engagement is confined to the region adjacent the surface 12 of the upper clamp and the flat portion 10 of the lower clamp.
  • the housing 5 is pivotally mounted on the frame 2 on projecting shafts 13 which are rotatable bushed pivot structures 14. the outermost ends of the shafts 13 are fixed to, and will rotate as one, with, first ends of respective downwardly extending torque arms 15, the other ends of the arms 15 being pivotally connected to the rams 16 of respective hydraulically activated cylinders 17.
  • the cylinders 17 are themselves pivotally mounted on the frame 2 at their lowermost ends in bushed pivot structures 18.
  • the rearward clamping structure 4 comprises a housing 19 pivotally mounted in bushed pivot structures 20, to a carriage structure 26 on laterally projecting shafts 21.
  • the housing 19 supports a fixed lower steel clamp 22 havng surface profile ridges 23 identical to those on the forward clamping die structure 3.
  • An upper steel clamp 24 is movable, under the influence of the rams 25a and hydraulically actuated cylinders 25b, into clamping engagement with the lower clamp 22, such that a generally planar sheet of profiled metal may be clamped therebetween.
  • the upper clamp 24 has a surface profiled for complementary engagement with the profiled surface 23 of the lower clamp 22.
  • the carriage structure 26, and therefore also the housing 19, is slidably movable relative to the frame 2 along peripheral longitudinally extending support and guide rails 27.
  • Peripheral hydraulic cylinders 28 are pivotally connected at one of their respective ends to the forward clamping die structures 3 with the distal ends of their longitudinally extending rams 28a being pivotally connected to respective sides of the carriage structure 26.
  • a preformed generally planar profiled metal sheet 31 having longitudinally extending grooves and ridges of trapezoidal cross-section is slid into position from the rear of the press trough the open rearward clamping structure 4.
  • the grooves and ridges of the sheet will be supported on the complementary groove and ridge formations on the surface 23 of the rearward clamping structure 4, and on the ridge and groove formations 9 on the flat portion 10 of the forward clamping die structure 3.
  • the hydraulic cylinders 25 in the rearward clamping structure 4 are first actuated to bring the upper die 24 into engagement with the profiled metal sheet such that the sheet is firmly clamped and held between the upper and lower clamps 24 and 22.
  • the hydraulic rams 29 are actuated to bring the upper clamp of the forward clamping die structure 3 into engagement with the profiled metal sheet such that the sheet 31 is firmly clamped between the upper clamp 7 and flat portion of the lower clamp 6.
  • peripheral cylinders 28 are then actuated such that their rams 28a will extend slightly, forcing the carriage 26 to move along guide rails 27 slightly away from the forward die structure 3.
  • the metal sheet extending between and clamped by the clamping structures 3 and 4 is put under tensile loading (as illustraded in Figure 4a).
  • hydraulic cylinders 17 are activated such that their rams 16 extend upwardly having a line of action through the pivotal connection between the rams 16 and the torque arms 15, causing the torque arms 15 and shafts 13 to rotate as one in the pivot structures 14; the housing 5 is therefore also caused to rotate forward on its mounting shafts 13.
  • the metal sheet in tension
  • the ridges and troughs 9 of the curved portion 11 of the lower clamp 6 which rotates forward with the housing 5 in the direction of arrow A, Fig 4b
  • the metal sheet is wrapped and plastically deformed around the curved portion 11 of the lower die 6 to produce the required curved longitudinal profile.
  • the housing 5 (and therefore clamps 6 and 7) is rotated progressively further forward, the curvature of the surface of the die portion 11, and the location of the pivot axis will cause the vertical height of the sheet in the region of the housing 5 to increase relative to the vertical position of the rearward clamped dies 22 and 24.
  • the housing 19 is able to pivot under the tension in the direction of arrow B in the clamped metal sheet on the projecting shafts 21 in the bushed pivot structures provided on the carriage structure 26.
  • the hydraulically operated clamps 6,7,22 and 24 are separated and the now longitudinally curved profiled metal sheer removed from the forward end of the press.
  • the press is than returned to its initial state, in readiness for receiving the next profiled sheet to be bent, by reverse actuation of the various hydraulic cylinders.

Landscapes

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

Claims (9)

  1. Vorrichtung (1) zum Biegen von profiliertem Blech quer zur Längsrichtung von Rippen und Mulden in dem Blech, umfassend:
    a) erste Klemmittel (3), die aus zwei Klemmelementen (6, 7) mit entsprechenden komplementär geformten Klemmflächen (8, 12) für den Eingriff mit den Rippen und Mulden in dem Bleck bestehen, wobei die ersten Klemmittel so angeordnet sind, daß sie das Blech an einer ersten Längsstelle einklemmen, wobei eines der Klemmelemente mit einem ausgedehnten Formstempelelementteil (11) versehen ist, das eine gekrümmte Oberfläche besitzt, die von der Hauptebene des Blechs fort gekrümmt ist, wobei die ersten Klemmittel um eine erste Drehachse drehbar sind, die quer zu der genannten Längsrichtung verläuft, so daß die gekrümmte Oberfläche des gekrümmten Formstempelelements veranlaßt wird, mit dem Blech in Eingriff zu kommen und dessen Verformung zu bewirken;
    b) zweite Klemmittel (4), die aus zwei Klemmelementen (22, 24) mit entsprechenden komplementär geformten Klemmflächen für den Eingriff mit den Rippen und Mulden in dem Blech bestehen, wobei die zweiten Klemmittel so angeordnet sind, daß sie das Blech an einer zweiten Längsstelle einklemmen, die in Längsrichtung einen Abstand von der ersten Klemmstelle hat, wobei die zweiten Klemmittel um eine zweite Drehachse drehbar sind, die etwa parallel zur ersten Drehachse verläuft, und wobei die zweiten Klemmittel und die zweite Drehachse in Längsrichtung relativ zu den ersten Klemmitteln (3) und der ersten Achse bewegbar sind; und
    c) Spannmittel (28, 28a), um auf das Blech in der Längsrichtung eine Zuglast auszuüben, während das Blech zwischen den ersten und zweiten Klemmitteln eingeklemmt ist.
  2. Vorrichtung nach Anspruch 1, bei der dich das Formstempelelementteil (11) von den ersten Klemmitteln in Richtung auf die zweiten Klemmittel erstreckt.
  3. Vorrichtung nach Anspruch 1 oder 2, bei der entweder die erste oder die zweite Drehachse so angeordnet ist, daß sie etwa auf der Hauptebene des Bleches liegt.
  4. Vorrichtung nach einem der vorhergehenden Ansprüche, bei der die zweiten Klemmittel (4) drehbar in einer Trägerkonstruktion (19, 26) gelagert sind, die entlang länglicher Führungselemente (27) relativ zu den ersten Klemmitteln (3) bewegbar ist.
  5. Vorrichtung nach einem der vorhergehenden Ansprüche, bei der die Spannmittel aus einer oder mehreren hydraulisch betätigbaren Zylinder- (28) und Kolben- (28a) Einheiten bestehen, um eine auf die zweiten Klemmittel wirkende Kraft auszuüben.
  6. Vorrichtung nach einem der vorherigen Ansprüche, bei der die Spannmittel so betätigbar sind, daß bei Bewegung der zweiten Klemmittel in Richtung auf die ersten Klemmittel die Spannung in dem Blech etwa konstant bleibt.
  7. Vorrichtung nach einem der vorhergehenden Ansprüche, bei der Drehmomentmittel (14, 15, 16, 17) vorgesehen sind, um den ersten Klemmitteln (3) wahlweise ein Drehmoment derart zuzuführen, daß die Klemmittel sich um die erste Drehachse drehen können.
  8. Vorrichtung nach Anspruch 7, bei der die Drehmomentmittel aus einer hydraulischen Zylinder/Kolben-Einheit (17) und einem Drehmomentarm (15) bestehen.
  9. Verfahren zur Verwendung einer Vorrichtung nach einem der vorhergehenden Ansprüche 1 bis 8, um profiliertes Blech quer zur Längsrichtung der Rippen und Mulden in dem Blech zu biegen, umfassend:
    a) Einklemmen des Bleches an zwei in dessen Längsrichtung einen Abstand voneinander aufweisenden Stellen zwischen den ersten bzw. zweiten Klemmmitteln (3, 4);
    b) Ausüben einer Zuglast auf das Blech in dessen Längsrichtung; und
    c) Biegen des profilierten Blechs um die gekrümmte Fläche des Formstempelelements (11), wenn die ersten Klemmittel (3) sich drehen, so daß dem Blech ein plastisch verformtes Längsprofil verliehen wird, während die Zuglast in dem Blech auf einem etwa konstanten Wert gehalten wird.
EP91918564A 1990-11-03 1991-10-31 Biegen von profilierten blechen Expired - Lifetime EP0555274B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9023926 1990-11-03
GB9023926A GB2249274B (en) 1990-11-03 1990-11-03 Bending of profiled sheet metal
PCT/GB1991/001914 WO1992007671A1 (en) 1990-11-03 1991-10-31 Bending of profiled sheet metal

Publications (2)

Publication Number Publication Date
EP0555274A1 EP0555274A1 (de) 1993-08-18
EP0555274B1 true EP0555274B1 (de) 1995-02-22

Family

ID=10684810

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91918564A Expired - Lifetime EP0555274B1 (de) 1990-11-03 1991-10-31 Biegen von profilierten blechen

Country Status (7)

Country Link
EP (1) EP0555274B1 (de)
DE (1) DE69107624T2 (de)
ES (1) ES2071338T3 (de)
GB (1) GB2249274B (de)
IE (1) IE67261B1 (de)
WO (1) WO1992007671A1 (de)
ZA (1) ZA918736B (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2479397C1 (ru) * 2011-12-28 2013-04-20 Российская Федерация, от имени которой выступает Министерство промышленности и торговли РФ (МИНПРОМТОРГ РОССИИ) Способ изготовления криволинейных сварных ребер жесткости
CN102921774B (zh) * 2012-10-10 2014-09-17 河南卫华重型机械股份有限公司 主梁下盖板折弯成形工装

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR984974A (fr) * 1943-10-20 1951-07-12 Perfectionnements apportés aux procédés et machines pour le façonnage de pièces, notamment métalliques
US2944582A (en) * 1959-05-08 1960-07-12 Century Die & Mfg Company Metal stretch bending apparatus
GB932228A (en) * 1962-04-04 1963-07-24 Cyril Bath Co Stock saving side grip head for stretch forming machines
GB932227A (en) * 1962-04-04 1963-07-24 Cyril Bath Co Metal forming machine and auxiliary fixture and combination thereof
GB930198A (en) * 1962-04-24 1963-07-03 Cyril Bath Co Combined stretch and wipe forming machine with automatic transverse control of the wipe shoe
GB1150084A (en) * 1965-02-22 1969-04-30 Redman Heenan Internat Ltd Improvements in or relating to Forming Machines
US3545242A (en) * 1968-10-14 1970-12-08 Sheridan Gray Inc Rotary stretch-forming machine
US3927548A (en) * 1973-12-28 1975-12-23 Stanray Corp Apparatus for forming arched roof sheets for automotive carrier vehicle
GB1573849A (en) * 1977-06-16 1980-08-28 Korstraesk Mek G Naeslund Method and device for bending corrugated sheet and a bent corrugated sheet
DE3721257C3 (de) * 1987-06-27 1996-08-14 Laengerer & Reich Kuehler Verfahren und Vorrichtung zum Herstellen rundgebogener Teile für Wärmeaustauscher

Also Published As

Publication number Publication date
ES2071338T3 (es) 1995-06-16
GB2249274B (en) 1993-11-24
GB9023926D0 (en) 1990-12-19
ZA918736B (en) 1992-07-29
DE69107624D1 (de) 1995-03-30
GB2249274A (en) 1992-05-06
IE913829A1 (en) 1992-05-22
EP0555274A1 (de) 1993-08-18
WO1992007671A1 (en) 1992-05-14
IE67261B1 (en) 1996-03-06
DE69107624T2 (de) 1995-09-07

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