EP0418114A2 - Appareil et procédé de pliage de tôles minces - Google Patents

Appareil et procédé de pliage de tôles minces Download PDF

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Publication number
EP0418114A2
EP0418114A2 EP90402411A EP90402411A EP0418114A2 EP 0418114 A2 EP0418114 A2 EP 0418114A2 EP 90402411 A EP90402411 A EP 90402411A EP 90402411 A EP90402411 A EP 90402411A EP 0418114 A2 EP0418114 A2 EP 0418114A2
Authority
EP
European Patent Office
Prior art keywords
bending
sheet
unit
transferrable
units
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.)
Withdrawn
Application number
EP90402411A
Other languages
German (de)
English (en)
Other versions
EP0418114A3 (en
Inventor
Veikko Pitkänen
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.)
TOOLSYSTEM Oy
Original Assignee
TOOLSYSTEM Oy
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 TOOLSYSTEM Oy filed Critical TOOLSYSTEM Oy
Publication of EP0418114A2 publication Critical patent/EP0418114A2/fr
Publication of EP0418114A3 publication Critical patent/EP0418114A3/en
Withdrawn legal-status Critical Current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
    • B21D5/04—Bending sheet metal along straight lines, e.g. to form simple curves on brakes making use of clamping means on one side of the work
    • B21D5/045—With a wiping movement of the bending blade
    • 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
    • B21D5/04—Bending sheet metal along straight lines, e.g. to form simple curves on brakes making use of clamping means on one side of the work
    • B21D5/042—With a rotational movement of the bending blade

Definitions

  • the present invention relates to a bending apparatus for thin sheet metals, said apparatus comprising a frame and at least two facingly arranged bending units, which are attached to the frame, equipped with bending members connected to drive means and complemented with a top and bottom push clamp. Furthermore, the inventions concerns a method in accordance with the preamble of claim 6 for bending thin metal sheets.
  • the aim of the invention is to achieve a bending apparatus of thin sheet metals which is applicable to the bending of different widths of thin sheet or band metals.
  • the bending apparatus in accordance with the invention is characterized by having at least one bending unit arranged transferrable in respect to a second bending unit, placed essentially perpendicular to the first unit, in order to align the sheet to be bent to a desired bending position, where the top and bottom push clamps act as sheet clamps serving to transfer the sheet during alignment and/or to determine the bending position of the sheet.
  • the invention aims to achieve a method for bending thin sheet or band metals of different widths, for which goal the method in accordance with the invention is characterized by the preamble of claim 6.
  • the apparatus comprises a frame 11 and at least two facingly placed bending units 1, 2, which are attached to the frame 11.
  • the bending units are provided with bending members complemented with drive means and with a top and bottom push clamp 4 and 5, respectively.
  • the bending members include, i.a., a bending cylinder (not shown) and bend wings 3a and 3b, which are articulated by at least one linking rod 13, as well as members for controlling the sheet alignment in horizontal and vertical directions such as, for instance, a rear gage 8 and a shaft 9 serving these functions, respectively.
  • the top push clamps 4 are arranged transferrable by means of, for instance, push cylinders, while the bottom push clamps 5 are arranged stationary.
  • the bending unit 2 is arranged movable on guides 12 in a direction essentially perpendicular to the bending unit 1.
  • the positioning of the transferrable bending unit 2 is advantageously arranged controllable by digital means.
  • the positioning of the sheet to be bent (designated by reference number 10 in Fig. 3) is arranged in the exemplifying embodiment by adapting the bend wings 3a to act as positioning means, against which the sheet to be bent is first aligned to determine the exact position of the sheet.
  • the position of the bend wing 3a in turn can be determined with the help of, for instance, positions of the rear gage 8 and the shaft 9.
  • the method according to the invention is implemented with the help of the apparatus in accordance with the exempli­ fying embodiment for instance 50 that the sheet is first brought to the gap between the bending units 1, 2 and positioned between the top and bottom push clamps 4, 5 of the stationary bending unit 1 against the bend wing 3a.
  • the transferrable bending unit 2 is placed with the help of the bend wing 3a against the other edge of the sheet.
  • the sheet is positioned to the desired bending position by using the top and bottom push clamps 4, 5 as sheet clamps.
  • This phase of positioning can be implemented by, for instance, in the first stage the push clamps 4, 5 of the bending unit 1 are holding the sheet to be bent while the push clamps 4, 5 the transferrable bending unit 2 are withdrawn, thus permitting the transfer of the transferrable bending unit 2 to a desired position of bending, after which the push clamps are closed and the sheet is bent to the desired direction. Subsequently, the push clamps of the stationary bending unit can be withdrawn and the sheet can be moved by the transferrable bending unit 2 to a desired position of bending in the stationary bending unit 1, after which the push clamps of the stationary bending unit are closed against the sheet and its other edge is bent to the desired direction. This procedure can be continued alternately until each edge of the sheet is bent to the desired shape such as, for instance, a U-, C- or pan shape. The finished item is finally returned to the center position for removal from the apparatus.
  • the desired shape such as, for instance, a U-, C- or pan shape.
  • the bent sheet 10 is initially positioned by means of the bend wings 3a to the desired position of bending, after which the downward bending of both edges of the sheet 10 is made by the bend wings 3a (phase 1).
  • the top push clamp 4 of the stationary bending unit 1 is withdrawn and the sheet 10 is transferred with the help of the transferrable bending unit 2 toward the stationary bending up to the next position of bending (phase 2).
  • the top push clamp 4 of the stationary bending unit is then pushed down and the edge of the sheet son the side of the stationary bending unit 1 is bent upward at the newly set position by the lower bend wing 3b, after which the push clamp 4 of the transferrable bending unit is withdrawn and said bending unit 2 is transferred toward the stationary bending unit 1 up to the next position of bending (phase 3). Subsequently, the top push clamp 4 of the transferrable bending unit 2 is pushed down and the edge of the sheet on the side of the transferrable bending unit 2 is bent upward by the lower bend wing 3b (phase 4). Finally the top push clamps 4 of both bending units 1, 2 are withdrawn and the finished item is removed from the apparatus.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP19900402411 1989-09-11 1990-08-31 Apparatus and method for bending of thin sheet metals Withdrawn EP0418114A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI894259A FI85112C (fi) 1989-09-11 1989-09-11 Boejningsanordning foer tunnplaotar och foerfarande foer boejning av tunnplaotar.
FI894259 1989-09-11

Publications (2)

Publication Number Publication Date
EP0418114A2 true EP0418114A2 (fr) 1991-03-20
EP0418114A3 EP0418114A3 (en) 1991-04-17

Family

ID=8528966

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900402411 Withdrawn EP0418114A3 (en) 1989-09-11 1990-08-31 Apparatus and method for bending of thin sheet metals

Country Status (2)

Country Link
EP (1) EP0418114A3 (fr)
FI (1) FI85112C (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4552748A (en) * 1982-09-08 1985-11-12 Eka Ab Method in the production of hydrogen peroxide
WO2002038300A1 (fr) * 2000-11-10 2002-05-16 Pivatic Oy Dispositif pour usiner un materiau en bandes ou en plaques
CN101807418A (zh) * 2004-06-15 2010-08-18 松下电器产业株式会社 驱动装置
CN101837394B (zh) * 2009-03-13 2012-09-26 株式会社天田 用于弯折板材的压弯机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3138192A (en) * 1961-03-02 1964-06-23 Cyril Bath Co Tangent bending machine
US3786666A (en) * 1971-08-04 1974-01-22 Schiefler Tool & Eng Inc Metal bending machine
EP0039322A1 (fr) * 1980-04-24 1981-11-04 VOEST-ALPINE Aktiengesellschaft Dispositif à plier des feuilles de tôle
DD229050A1 (de) * 1984-11-19 1985-10-30 Hohenstein Vorrichtungsbau Verfahren und vorrichtung zum mehrfachabkanten von grossflaechigen blechen
EP0300137A2 (fr) * 1987-07-23 1989-01-25 BRÜDER NEUMEISTER GMBH Maschinen- und Gerätebau für die Grafische Industrie Dispositif de pliage

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3138192A (en) * 1961-03-02 1964-06-23 Cyril Bath Co Tangent bending machine
US3786666A (en) * 1971-08-04 1974-01-22 Schiefler Tool & Eng Inc Metal bending machine
EP0039322A1 (fr) * 1980-04-24 1981-11-04 VOEST-ALPINE Aktiengesellschaft Dispositif à plier des feuilles de tôle
DD229050A1 (de) * 1984-11-19 1985-10-30 Hohenstein Vorrichtungsbau Verfahren und vorrichtung zum mehrfachabkanten von grossflaechigen blechen
EP0300137A2 (fr) * 1987-07-23 1989-01-25 BRÜDER NEUMEISTER GMBH Maschinen- und Gerätebau für die Grafische Industrie Dispositif de pliage

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4552748A (en) * 1982-09-08 1985-11-12 Eka Ab Method in the production of hydrogen peroxide
WO2002038300A1 (fr) * 2000-11-10 2002-05-16 Pivatic Oy Dispositif pour usiner un materiau en bandes ou en plaques
US7066001B2 (en) 2000-11-10 2006-06-27 Pivatic Oy Device for machining band-like or plate-like material
CN101807418A (zh) * 2004-06-15 2010-08-18 松下电器产业株式会社 驱动装置
CN101837394B (zh) * 2009-03-13 2012-09-26 株式会社天田 用于弯折板材的压弯机

Also Published As

Publication number Publication date
FI85112B (fi) 1991-11-29
FI894259A (fi) 1991-03-12
FI894259A0 (fi) 1989-09-11
FI85112C (fi) 1992-03-10
EP0418114A3 (en) 1991-04-17

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