EP0370582B1 - Vorrichtung zum Biegen eines Blechrandes - Google Patents

Vorrichtung zum Biegen eines Blechrandes Download PDF

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Publication number
EP0370582B1
EP0370582B1 EP89202953A EP89202953A EP0370582B1 EP 0370582 B1 EP0370582 B1 EP 0370582B1 EP 89202953 A EP89202953 A EP 89202953A EP 89202953 A EP89202953 A EP 89202953A EP 0370582 B1 EP0370582 B1 EP 0370582B1
Authority
EP
European Patent Office
Prior art keywords
framework
support block
sheet
lamellae
bending roll
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
EP89202953A
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English (en)
French (fr)
Other versions
EP0370582A1 (de
Inventor
Arnold Van Der Goot
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.)
Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT89202953T priority Critical patent/ATE84994T1/de
Publication of EP0370582A1 publication Critical patent/EP0370582A1/de
Application granted granted Critical
Publication of EP0370582B1 publication Critical patent/EP0370582B1/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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
    • 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
    • B21D19/00—Flanging or other edge treatment, e.g. of tubes
    • B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws

Definitions

  • the invention relates to a device for bending the rim of a sheet, said device comprising a bending roll in the shape of a cylindrical roll from which a segment is removed, in which segment a rim of a sheet can be pressed which has to be bent, a support for the bending roll by which the bending roll is supported over a part of its circumference, a forming die against which the rim of the sheet to be bent can be pressed by means of the bending roll, means for pressing the bending roll towards the forming die and a framework serving to support the forming die on the one hand and the means for bringing the bending roll towards the forming die and guiding the bending roll on the other hand.
  • the object of the invention is to provide a device which is simple of construction and in which the deformations of the framework will be equal over the whole length of a sheet to be bent by which an exact bending of the rim of a sheet can be executed.
  • the framework is executed substantially U-shaped, the opposite end portions of the legs of the U-shaped framework serving to support the forming die and the means for moving the bending roll towards the forming die respectively, the bending roll being supported by a support block being provided pivotally or slidably in respect of the web of the U-shaped framework such that the force which during the bending of a sheet is exerted to the support block and is directed transverse to the direction of movement of said block, is absorbed by the web of said framework, said framework, said support block and the means for moving said support block towards said forming die extending themselves over the whole length of the rim of the sheet to be bent.
  • the support block will be in the shape of a support arm one end of which is pivotally connected to the web of the framework, the other end being provided with a cavity for supporting the forming die and with a cavity provided in the opposite surface for pivotally receiving the end of at least one lever, the other end of which is pivotally connected to the one end of a second lever, the other end of which is pivotally supported by the leg of the U-shaped framework, such that said two levers together are forming an angle lever system, a driving mechanism acting on at least one of said lever systems.
  • the support arm and the levers of the angle lever system are supported by said framework in such a way that the components of the forces acting upon the end of the support arm by the bending roll on the one hand and by the angle lever system on the other hand, which components are running in a plane transverse to the plane in which the axes of the two cavities in said support arm are positioned, are oppositely directed. This contributes to a favourable dimensioning of the support arm and of the framework.
  • the support block is movable in a direction parallel to the web of the U-shaped framework and normal to the plane of a sheet which has to be bent, said support block being comprised between two opposite parallel running surfaces of said web and of an upwardly protruding extension of the leg of the framework respectively.
  • a sheet For bringing said support block upwardly for bending a sheet use can be made of at least one set of elongated wedge shaped activating strips which together are forming a block with opposite parallel surfaces which are engaging a surface of the support block and of the lower leg of the U-shaped framework respectively such that by moving said strips lengthwise the surfaces of support block and of the framework leg are pressed away from each other.
  • the support block can be guided by rods running normal to the plane of the sheet and being connected to either the support block or the framework and extending into a bore in the other part.
  • the rods will be partly provided with a screwthread for being screwed into the support block, the other end of said rods extending downwardly through a bore in the framework leg, a spring being provided between the end of a rod and said leg to bring the support block downwardly after the bending of a sheet.
  • the framework is composed from substantially U-shaped lamellae being provided with holes running transverse to the plane of said lamellae through which holes parallel running rods can be slid for holding said lamellae together.
  • Said lamellae can be obtained in a simple way by means of stamping or by another suitable operation and a number of lamellae can be joined to obtain the desired length of the frame work.
  • a number of lamellae in particular almost half the total number of lamellae will be connected to a fixed package by means of at least one of the rods and the other lamellae will be movable in respect of said package by means of two aligned screwed rods which are longitudinally movable in respect of each other but are rotatably coupled with each other, said rods extending through screwthread provided in holes in said lamellae, the length of one of said screwed rods being at least equal to the total thickness of all lamellae.
  • the framework is having its maximum length.
  • said screwed rod is screwed out of a number of lamellae, the aligned screwed rod simultaenously being screwed into the lamellae.
  • the desired thickness of the package is obtained said screwed rods can be pulled somewhat from each other so that two separate packages of lamellae are obtained which are somewhat spaced from each other. So the thickness of the package of lamellae which has to be used substantially can be each multiple of the thickness of one single lamella.
  • the device shown in the figs. 1 and 2 comprises the mainly U-shaped framework 1 composed from lamellae 2.
  • a lamella 2 consists of the web 3 and the legs 4 and 5.
  • the leg 4 extends into the forming die 6 opposite which the bending roll 7 is lying consisting from a cylindrical portion from which a segment 8 is removed.
  • a sheet 9 can be brought from which the rim 10 can be bent by pressing the bending roll 7 towards the forming die 6.
  • the bending roll 7 is supported by the support arm 11, a surface 12 of which is provided with a cavity 13, the opposite surface 14 being provided with a cavity 15 for pivotally receiving one end 16 of a lever 17, the other end 18 of which is pivotally connected with the end 19 of a lever 20, the other end 21 of which is pivotally supported by a cavity 22 in the legs 5 of the lamellae 2.
  • the support arm 11 is pivotally received in a cavity 23 in the framework 1.
  • the levers 17 and 20 together are forming an angle lever which can be operated by pressurized medium cylinders 24, e.g. one at each end of the framework.
  • pressurized medium cylinders 24 e.g. one at each end of the framework.
  • the pivot between the levers 17 and 20 can be moved in the direction of the arrow P in fig. 1, by which the arm 11 will be pivoted such that the bending roll 7 will be moved towards the forming die 6 and the rim 10 of the sheet 9 will be bent.
  • the lamellae 2 are provided with holes 25, 26 and 27. As in particular appears from fig. 2 rods 28 and 29 are extending through the holes 25 and 26 respectively. Almost half the number of lamellae is enclosed between thickened portions 30 of the rods 28 and 29, such that these lamellae are forming one package 31.
  • a desired number can be added to the package 31.
  • this is one lamella, the further lamellae together forming one package 32.
  • the hole 27 of each lamella is provided with screwthread 33.
  • the pitch of this screwthread preferably is equal to the thickness of one lamella.
  • a first screwed rod 34 is running through the screwthread 33, the length of which rod is at least equal to the total thickness of all lamellae.
  • the screwed rod 35 is extending in line with the screwed rod 34, the rods 34 and 35 being coupled by means of a hexagon 36, connected to one of the screwed rods and extending in a fitting cavity in the other screwed rod. So the screwed rods 34 and 35 can be slid apart somewhat at the position of the hexagon 36 but will together being rotated as by means of a crank connected to the screwed rod 35.
  • a nut 38 is provided on the screwed rod 35, said nut being provided with sidewards extending pins 39. Said pins 39 cooperate with a lever 40 in a not further shown way, one end 41 of said lever 40 being pivotally supported by means of the rod 28.
  • the screwed rod 34 extends itself through the lamellae package 31, lying between the two thickened portions 30 of the rods 28 and 29 and through one further lamella 2, the screwed rod 35 extending itself through the other lamellae to form the package 32.
  • the packages 31 and 32 are somewhat pulled apart so that the device can be used for bending the rim of a sheet from which the two rims running at a right angle to said rim are already provided with a bent portion.
  • a not shown protecting sheet can be applied between the bending roll 7 and the sheet 9 which protecting sheet only needs to have a small thickness.
  • said device again comprises a mainly U-shaped framework 42 comprising the web 43, the upper leg 44 and the lower leg 45.
  • the upper leg 44 extends in the forming die 46, the lower leg 45 being provided with an upwardly extending portion 47.
  • a support block 48 is provided with a cavity 49 in which the bending roll 50 is received.
  • the surface 51 of the support block 48 engages the web 43 of the framework 42.
  • a bearing sheet 52 can be provided between the surface 51 and the web 43.
  • the support block 48 together with the bending roll 50 are shown in the position after bending a sheet 53 so in the uppermost position.
  • the vertical movement of the support block 48 is obtained by using elongated wedge shaped strips 54 forming blocks 55 with opposite parallel surfaces 56, one of which is engaging a surface 57 of the support block 48 and the other is engaging a surface 58 of the lower leg 45 of the framework 42. Between the strips 54 rolls 59 can be provided to decrease the frictional forces when moving the strips 54 in respect of each other. Either the lower strips 54 can be stationary in respect of the framework 42 or the upper strips 54 can be stationary in respect of the support block 48. Between the other engaging surfaces also rolls can be provided for decreasing the friction between said surfaces when moving the related strips 54.
  • the support block 48 When a sheet 53 has to be bent the support block 48 will be in a lower position than indicated in fig. 3, in which position the bending roll 50 can be in the position as shown in fig. 1.
  • a strip 54 e.g. the upper strip 54 is moved in the direction of the arrow R in fig. 4, so that the upper strips 54 will reach the position as shown in this figure.
  • the movement of the strip 54 e.g. can take place by means of a pressurized medium cylinder, which is not further shown.
  • the bending roll 50 is bending the rim of the sheet 53 till the position of the bending roll 50, shown in fig. 3, is reached.
  • the strips 54 are moved in the direction opposite to that of the arrow R.
  • said block can be connected to bolts 60 extending through an opening 61 in the lower leg 45 of the framework 42.
  • a spring 62 can be provided around the bolt 60, engaging the head 63 of the bolt 60 on the one hand and the lower leg 45 on the other hand.
  • the bolts 60 also can serve to prevent moving of the support block 48 in the direction of movement of the upper strips 48. This object also can be achieved by providing the framework with end-strips.
  • a protecting sheet can be provided between the bending roll 50 and the sheet 53 to prevent damage of the sheet 53. Also between other engaging surfaces being moved in respect of each other, bearing sheets or rollers can be provided to decrease frictional forces and wear.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Claims (10)

  1. Vorrichtung zum Biegen des Randes (10) eines Bleches (9,53), umfassend eine Biegerolle (7,50) in der Form einer zylindrischen Rolle, aus der ein Segment (8) entfernt ist, in welches Segment (8) ein zu biegender Blechrand gedrückt werden kann, einen Träger (11,48) für die Biegerolle, wodurch die Biegerolle über einen Teil ihres Umfangs unterstützt wird, einen Biegekern (6,46), gegen den der Rand des zu biegenden Bleches (9,53) mittels der Biegerolle (7,50) gedrückt werden kann, Mittel zum Drucken der Biegerolle zum Biegekern (6,46) hin und ein Gestell (1,42), das zum Unterstützen des Biegekerns (6,46) einerseits und der Mittel zum Bringen der Biegerolle (7,50) zum Biegekern (6,46) hin und zum Führen der Biegerolle andererseits dient,
    dadurch gekennzeichnet,
    dass das Gestell (1,42) im wesentlichen U-förmig ausgebildet ist und die einander gegenüber liegenden Endteile der Beine (4,5,44,45) des U-förmigen Gestells zum Unterstützen des Biegekerns (6,46) bzw. der Mittel zum Bewegen der Biegerolle (7,50) zum Biegekern hin dienen, wobei die Biegerolle (7,50) durch einen Tragblock (11,48) unterstützt wird, der gelenkig oder aber verschiebbar in bezug auf den Steg (3,43) des U-förmigen Gestells (1,42) derart angeordnet ist, dass die Kraft, die während des Biegens eines Bleches (9,53) auf den Tragblock (11,48) ausgeübt wird und quer zur Bewegungsrichtung des genannten Blockes gerichtet ist, durch den Steg (3,43) des Gestells absorbiert wird, wobei das Gestell (1,42), der Tragblock (11,48) und die Mittel zum Bewegen des Tragblocks zum Biegekern (6,46) hin sich über die ganze Länge des Randes des zu biegenden Bleches (9,53) erstrecken.
  2. Vorrichtung nach Anspruch 1,
    dadurch gekennzeichnet,
    dass der Tragblock die Form eines Tragarms (11) aufweist, von dem ein Ende (23) gelenkig mit dem Steg (3) des Gestells (1) verbunden ist, während das andere Ende (12) einen Hohlraum (13) zum Unterstützen des Biegekerns (7) aufweist und mit einem Hohlraum (15) versehen ist, der in der gegenüber liegenden Oberfläche (14) zum gelenkigen Aufnehmen des Endes (16) von wenigstens einem Hebel (17) angeordnet ist, von dem das andere Ende (18) gelenkig mit dem einen Ende (19) eines zweiten Hebels (20) verbunden ist, von dem das andere Ende (21) gelenkig durch das Bein (5) des U-förmigen Gestells (1) derart unterstützt wird, dass die zwei Hebel (17,20) zusammen ein Kniegelenk bilden, wobei ein Betätigungsmechanismus (24) auf wenigstens einem der Hebelsysteme (17,20) angreift.
  3. Vorrichtung nach Anspruch 2,
    dadurch gekennzeichnet,
    dass der Tragarm (11) und die Hebel (17,20) des Kniehebelsystems derart durch das Gestell (1) unterstützt werden, dass die Komponenten der Kräfte, die auf das Ende des Tragarms (11) durch die Biegerolle (7) einerseits und durch das Kniehebelsystem (17,20) andererseits ausgeübt werden, welche Komponenten sich erstrecken in einer Ebene quer zur Ebene, in der sich die Achsen der zwei Hohlräume (13,15) in dem Tragarm (11) befinden, entgegengesetzt gerichtet sind.
  4. Vorrichtung nach Anspruch 1,
    dadurch gekennzeichnet,
    dass der Tragblock (48) in einer Richtung parallel zu dem Steg (43) des U-förmigen Gestells (42) und senkrecht zur Ebene eines zu biegenden Bleches (53) beweglich ist, wobei der Tragblock (48) sich zwischen beziehungsweise zwei einander gegenüber liegenden parallelen Oberflächen des Steges (43) und einer nach oben ausragenden Verlängerung (47) des Beines (45) des Gestells (42) befindet.
  5. Vorrichtung nach Anspruch 4,
    dadurch gekennzeichnet,
    dass zum Bringen des Tragblocks (48) nach oben zum Biegen eines Bleches (53) wenigstens ein Satz länglicher keilförmiger Bedienungsstreifen (54) benutzt werden, die zusammen einen Block (55) mit einander gegenüber liegenden, parallelen Oberflächen (56) bilden, die beziehungsweise eine Oberfläche (57,58) des Tragblocks (48) und des unteren Beines (45) des U-förmigen Gestells (42) derart berühren, dass durch Bewegung der genannten Streifen in der Längsrichtung die Oberflächen des Tragblocks (48) und des Gestellbeins (45) von einander weg gedrückt werden.
  6. Vorrichtung nach Anspruch 4 oder 5,
    dadurch gekennzeichnet,
    dass der Tragblock (48) durch Stäbe (60) geführt wird, die senkrecht zur Ebene des Bleches (53) verlaufen und mit entweder dem Tragblock (48) oder dem Gestell (42) verbunden sind und sich in einer Bohrung (61) im anderen Teil erstrecken.
  7. Vorrichtung nach Anspruch 6,
    dadurch gekennzeichnet,
    dass die Stäbe (60) teilweise mit einem Schraubengewinde zum Schrauben in den Tragblock (48) versehen sind, wobei das andere Ende der Stäbe sich nach unten durch eine Bohrung (61) im Gestellbein (45) erstrecken, wobei eine Feder (62) zwischen dem Ende (63) eines Stabes (60) und dem Bein (45) vorgesehen ist um den Tragblock (48) nach dem Biegen eines Bleches (53) nach unten zu bringen.
  8. Vorrichtung nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet,
    dass das Gestell (1,42) aus im wesentlichen U-förmigen Lamellen (2) besteht, die mit quer zur Ebene der Lamellen verlaufenden Löchern (25,26,27) versehen sind, durch welche hindurch parallel verlaufende Stäbe (28,29,34,35) zum Zusammenhalten der Lamellen geschoben werden können.
  9. Vorrichtung nach Anspruch 8,
    dadurch gekennzeichnet,
    dass eine Anzahl Lamellen (2), insbesondere nahezu die Hälfte der gesamten Anzahl Lamellen mittels wenigstens eines der Stäbe (28,29) zu einem festen Paket (31) verbunden ist und dass die anderen Lamellen in bezug auf das Paket (31) mittels zwei in der Verlängerung voneinander verlaufender Schraubenstangen (34,35) verschiebbar sind, die in der Längsrichtung in bezug auf einander verschiebbar sind, aber drehbar miteinander gekuppelt sind, wobei die Stäbe sich durch in Löchern (27) in den Lamellen (2) vorgesehenes Schraubengewinde (33) erstrecken, wobei die Länge von einer der Schraubenstangen (34) wenigstens der Gesamtdicke aller Lamellen (2) gleich ist.
  10. Vorrichtung nach Anspruch 8 oder 9,
    dadurch gekennzeichnet,
    dass der Tragblock (11,48) und andere Teile der Vorrichtung auch aus Lamellen bestehen.
EP89202953A 1988-11-22 1989-11-21 Vorrichtung zum Biegen eines Blechrandes Expired - Lifetime EP0370582B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89202953T ATE84994T1 (de) 1988-11-22 1989-11-21 Vorrichtung zum biegen eines blechrandes.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8802876A NL8802876A (nl) 1988-11-22 1988-11-22 Inrichting voor het zetten van de rand van een plaat.
NL8802876 1988-11-22

Publications (2)

Publication Number Publication Date
EP0370582A1 EP0370582A1 (de) 1990-05-30
EP0370582B1 true EP0370582B1 (de) 1993-01-27

Family

ID=19853268

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89202953A Expired - Lifetime EP0370582B1 (de) 1988-11-22 1989-11-21 Vorrichtung zum Biegen eines Blechrandes

Country Status (5)

Country Link
EP (1) EP0370582B1 (de)
AT (1) ATE84994T1 (de)
DE (1) DE68904634T2 (de)
ES (1) ES2045394T3 (de)
NL (1) NL8802876A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009010378B3 (de) * 2009-02-26 2010-09-02 Müller Weingarten AG Anlage zum Biegen von Blechteilen
CN103111503A (zh) * 2013-03-08 2013-05-22 凌琰 折边方法及折边装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4203680C1 (de) * 1992-02-08 1993-05-06 Iska Wolfgang Katz Verwaltungs-Gmbh, 7735 Dauchingen, De
FR2717109A1 (fr) * 1994-03-08 1995-09-15 Jeandeaud Jean Claude Dispositif de pliage d'une tôle le long d'une ligne droite.
CN102009094B (zh) * 2010-09-30 2014-05-28 厦门正黎明冶金机械有限公司 转轴式翻转折边机

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB301779A (en) * 1927-06-21 1928-12-13 Frank Humphris Improvements in plate-frames for presses and other machines
US3400568A (en) * 1965-10-22 1968-09-10 John F Cech Die for making right angles on steel
GB1448478A (en) * 1973-11-28 1976-09-08 Protocol Eng Ltd Methods of and apparatus for edge-forming metallic plates
US4002049A (en) * 1975-06-09 1977-01-11 Ready Stamping System, Inc. Forming tool for use in a die assembly
DE2642549A1 (de) * 1976-09-22 1978-03-23 Eckold Vorrichtung Kraftbetriebenes handgeraet
IT1086365B (it) * 1977-09-19 1985-05-28 Salvagnini Transferica Spa Macchina per la produzione di pannelli di lamiera rettangolare con bordi piegati

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009010378B3 (de) * 2009-02-26 2010-09-02 Müller Weingarten AG Anlage zum Biegen von Blechteilen
CN103111503A (zh) * 2013-03-08 2013-05-22 凌琰 折边方法及折边装置
CN103111503B (zh) * 2013-03-08 2015-06-17 凌琰 折边装置

Also Published As

Publication number Publication date
DE68904634D1 (de) 1993-03-11
NL8802876A (nl) 1990-06-18
ATE84994T1 (de) 1993-02-15
ES2045394T3 (es) 1994-01-16
EP0370582A1 (de) 1990-05-30
DE68904634T2 (de) 1993-08-26

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