WO2013092507A1 - Mécanisme de compensation du fléchissement dynamique qui évite le fléchissement d'une tôle dans les presses-plieuses - Google Patents

Mécanisme de compensation du fléchissement dynamique qui évite le fléchissement d'une tôle dans les presses-plieuses Download PDF

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Publication number
WO2013092507A1
WO2013092507A1 PCT/EP2012/075826 EP2012075826W WO2013092507A1 WO 2013092507 A1 WO2013092507 A1 WO 2013092507A1 EP 2012075826 W EP2012075826 W EP 2012075826W WO 2013092507 A1 WO2013092507 A1 WO 2013092507A1
Authority
WO
WIPO (PCT)
Prior art keywords
hydraulic cylinder
lower table
hydraulic
compensating mechanism
deflection
Prior art date
Application number
PCT/EP2012/075826
Other languages
English (en)
Inventor
Ahmet Civan
Original Assignee
Durmazlar Makina Sanayi Ve Ticaret Anonim Sirketi
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 Durmazlar Makina Sanayi Ve Ticaret Anonim Sirketi filed Critical Durmazlar Makina Sanayi Ve Ticaret Anonim Sirketi
Publication of WO2013092507A1 publication Critical patent/WO2013092507A1/fr

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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
    • B21D5/0272—Deflection compensating means

Definitions

  • the present invention relates to dynamic deflection compensating mechanism which prevents the deflection that may occur on the sheet in presses which give form to the sheet pieces.
  • a comparison device comprising two longitudinal rods which are arranged in the longitudinal housings of each of the upper and lower frames respectively in order for the upper and lower tables of a bending press to be able to form the deflection of at least some part of a press member.
  • the lower table does not comprise members which provide the adjustment of the deflecting in the desired level in a computer-controlled manner.
  • the present invention relates to dynamic deflection compensating mechanism which prevents the sheet plate from having a deflected structure, in order to eliminate the abovementioned problems and to bring new advantages to the related technical field.
  • the main object of the present invention is to prevent the deflecting occurring on the sheet plate in bending presses.
  • another object of the present invention is to provide a dynamic deflection compensating mechanism which provides application of pressure to the lower table from the desired place thereof in the reverse direction of the deflection.
  • Another object of the present invention is to provide a dynamic deflection compensating mechanism which provides application of pressure to the desired place of the lower table with the desired amount.
  • the present invention is a deflection compensating mechanism in order to prevent the deflection formed in the sheet plate during press, in press/bending machines with a lower table comprising two lateral walls and an intermediate wall positioned between said lateral walls.
  • Said mechanism is characterized by comprising at least one hydraulic cylinder and a control unit which determines the hydraulic amount applied into the hydraulic cylinder chamber and which adjusts the pressure force to be applied by the hydraulic cylinder, in order to provide the lower table to apply pressure towards the part where the lower table is in connection to the mold holder after filling hydraulic liquid into the main body with a chamber after being positioned into the cut-outs opened on said lower table.
  • said hydraulic cylinder comprises a movable head which is positioned on the main body thereof in a movable manner and which applies pressure to the lower table.
  • a pushing member which moves upwardly as hydraulic liquid fills in the chamber and which provides the lifting of the movable head and by means of this, which provides application of pressure to the lower table.
  • said hydraulic cylinder comprises a filling hole through which hydraulic liquid is filled into the chamber thereof.
  • fixation pieces which are connected to the lateral walls from one end thereof and which apply pressure to the main body of the hydraulic cylinder from the other end thereof in order to fix the hydraulic cylinder into the cut-out formed on the lower table.
  • said hydraulic cylinder applies pressure to the intermediate wall of the lower table.
  • the press brake (10) essentially comprises a lower table (1 1 ); an upper table which moves upwardly and downwardly on said lower table (1 1 ); a lower mold which is adapted to the lower table (1 1 ); and an upper mold which is adapted to the upper table.
  • the lower mold is connected to the lower table (1 1 ) by means of a mold holder (12).
  • the hydraulic cylinder (20) is adapted into the lower table (1 1 ).
  • Said lower table (1 1 ) comprises three pieces, namely two lateral walls (1 1 1 , 1 12) and intermediate wall (1 13) positioned between the lateral walls (1 1 1 , 1 12).
  • the mold holder (12) is positioned on said three walls (1 1 1 , 1 12, 1 13).
  • the mold is connected onto the mold holder (12).
  • Cut-outs (1 15) are embodied on the lower table (1 1 ) in order for the hydraulic cylinders (20) to be positioned. Hydraulic cylinders (20) are placed to said cut-outs (1 15).
  • the number of hydraulic cylinders (20) is determined according to the dimension of the sheet to be bent and according to the length of the press brake (10).
  • a hydraulic cylinder (20) is positioned so as to correspond exactly to the middle point of the lower table (1 1 ) of the press brake (10) and one each hydraulic cylinder (20) is positioned to the lateral side of this cylinder (20). Since a bigger deflection is formed in the middle point of the lower table (1 1 ), in order to balance this deflection, the diameter of the chamber (21 1 ) of the hydraulic cylinder (20) which exists in the middle is greater. The diameter of the chambers (21 1 ) of the hydraulic cylinder (20) which exists at both sides is smaller. The hydraulic cylinder (20), whose diameter is bigger, applies a bigger pressure on the lower table (1 1 ). The cylinder (20), whose diameter is small, can apply less pressure.
  • the number of the hydraulic cylinder (20) can be more than three.
  • one hydraulic cylinder (20) can be positioned, and at both sides of this hydraulic cylinder (20), two, three and more number of hydraulic cylinders (20), which have smaller diameters, can be positioned.
  • the hydraulic cylinder (20) comprises a cylindrical main body (21 ) so as to define a chamber (21 1 ) in the inner part thereof; and a cylindrical head part which is positioned so as to be able to move on said main body (21 ).
  • the movable head (22) is moving upwardly.
  • a pushing member (212) in said chamber (21 1 ).
  • the pushing member (212) begins pushing the movable head (22) upwardly.
  • the upper part of the movable head (22) contacts to the intermediate wall (1 13).
  • the movable head (22) moves upwardly, it applies pressure for lifting the intermediate wall (1 13) in this direction.
  • the intermediate wall (1 13) transfers this pressure to the lower mold holder (12) positioned on the upper part thereof and thus to the lower mold.
  • deflecting is provided to the lower mold in the desired manner by means of the hydraulic cylinder (20).
  • the main body (21 ) of the hydraulic cylinder (20) is seated onto the two lateral walls (1 1 1 , 1 12).
  • fixation pieces (1 14) are connected to the two lateral walls (1 1 1 , 1 13).
  • the fixation pieces (1 14) apply pressure to the main body (21 ) of the hydraulic cylinder (20) from the two lateral sides and thereby they prevent the hydraulic cylinder (20) from falling through the cut-out part.
  • Hydraulic liquid is filled into the chamber (21 1 ) of the hydraulic cylinder (20) through a hole (213). Said hole (213) is in connection to a hydraulic liquid depot (not illustrated in the figure).
  • the hydraulic liquid is sent into the chamber (21 1 ) of the hydraulic cylinder (20) by means of a pipe from the hydraulic liquid depot. There is a valve in the hydraulic liquid depot and the amount of hydraulic liquid applied using this valve is adjusted.
  • the amount of hydraulic liquid, which is to be applied to the hydraulic cylinders (20), is controlled by a PLC control unit.
  • the force, which will be applied by the hydraulic cylinder (20) is saved to the PLC control unit beforehand. Therefore, the desired pressure force is adjusted through the PLC control unit in order to balance it according to the deflection which will be formed on the sheet, and hydraulic liquid is filled to the hydraulic cylinders (20) accordingly.
  • reverse deflecting process is realized in a much more sensitive level.

Landscapes

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

Abstract

La présente invention porte sur un mécanisme de compensation du fléchissement destiné à éviter le fléchissement formé dans la tôle pendant la pression dans des presses-plieuses (10) possédant une table inférieure (11), comprenant deux parois latérales (111, 112) et une paroi intermédiaire (113) positionnée entre lesdites parois latérales (111, 112). Ledit mécanisme de compensation du fléchissement est caractérisé en ce qu'il comprend au moins un cylindre hydraulique (20) et une unité de commande qui détermine la quantité hydraulique envoyée à la chambre (211) du cylindre hydraulique (20), et qui ajuste la force de pression à appliquer par le cylindre hydraulique (20) pour permettre à la table inférieure (11) d'appliquer une pression en direction de la pièce où la table inférieure (11) est en liaison avec le porte-moule (12) après l'introduction de liquide hydraulique dans le corps principal (21) muni d'une chambre (211) après avoir été positionnée dans les découpes (115) ouvertes sur ladite table inférieure (11).
PCT/EP2012/075826 2011-12-20 2012-12-17 Mécanisme de compensation du fléchissement dynamique qui évite le fléchissement d'une tôle dans les presses-plieuses WO2013092507A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2011/12647 2011-12-20
TR2011/12647A TR201112647A2 (tr) 2011-12-20 2011-12-20 Abkant preslerde sac sehimini engelleyen dinamik bombeleme mekanizması.

Publications (1)

Publication Number Publication Date
WO2013092507A1 true WO2013092507A1 (fr) 2013-06-27

Family

ID=47003492

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/075826 WO2013092507A1 (fr) 2011-12-20 2012-12-17 Mécanisme de compensation du fléchissement dynamique qui évite le fléchissement d'une tôle dans les presses-plieuses

Country Status (2)

Country Link
TR (1) TR201112647A2 (fr)
WO (1) WO2013092507A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107350311A (zh) * 2017-08-24 2017-11-17 山东嘉意机械有限公司 中大吨位数控折弯机新型下梁及折弯机
CN108607913A (zh) * 2017-04-25 2018-10-02 山东嘉意机械有限公司 压边装置及压边折弯一体机
CN109332434A (zh) * 2018-12-05 2019-02-15 安徽力源数控刃模具制造有限公司 一种折弯机工作台纵向机械挠度补偿装置及其制作方法
CN110639986A (zh) * 2019-11-07 2020-01-03 南通威锋重工机械有限公司 一种液压板料数控折弯机
AT523965A1 (de) * 2020-07-09 2022-01-15 Trumpf Maschinen Austria Gmbh & Co Kg Biegevorrichtung mit Durchbiegungsausgleich
US20240082901A1 (en) * 2021-04-15 2024-03-14 Bystronic Laser Ag Bending machine for bending workpieces, in particular a press brake

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4580434A (en) * 1983-11-14 1986-04-08 Cincinnati Incorporated Deflection compensating assembly for a press brake
US5193452A (en) 1989-09-11 1993-03-16 Willem Dieperink Folding press with deflection compensating means
JPH08150416A (ja) * 1994-11-24 1996-06-11 Nisshinbo Ind Inc 中だれ補正機能を具えた曲げ加工機
EP1452302A1 (fr) * 2003-02-26 2004-09-01 Bystronic Laser AG Procédé de correction d'une opération de pliage et presse-plieuse
WO2008049796A1 (fr) * 2006-10-23 2008-05-02 Task 84 S.P.A. Procédé et dispositif pour mesurer et contrôler les déflections structurelles d'une machine à presser - cintrer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4580434A (en) * 1983-11-14 1986-04-08 Cincinnati Incorporated Deflection compensating assembly for a press brake
US5193452A (en) 1989-09-11 1993-03-16 Willem Dieperink Folding press with deflection compensating means
JPH08150416A (ja) * 1994-11-24 1996-06-11 Nisshinbo Ind Inc 中だれ補正機能を具えた曲げ加工機
EP1452302A1 (fr) * 2003-02-26 2004-09-01 Bystronic Laser AG Procédé de correction d'une opération de pliage et presse-plieuse
WO2008049796A1 (fr) * 2006-10-23 2008-05-02 Task 84 S.P.A. Procédé et dispositif pour mesurer et contrôler les déflections structurelles d'une machine à presser - cintrer

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108607913A (zh) * 2017-04-25 2018-10-02 山东嘉意机械有限公司 压边装置及压边折弯一体机
CN107350311A (zh) * 2017-08-24 2017-11-17 山东嘉意机械有限公司 中大吨位数控折弯机新型下梁及折弯机
CN109332434A (zh) * 2018-12-05 2019-02-15 安徽力源数控刃模具制造有限公司 一种折弯机工作台纵向机械挠度补偿装置及其制作方法
CN110639986A (zh) * 2019-11-07 2020-01-03 南通威锋重工机械有限公司 一种液压板料数控折弯机
AT523965A1 (de) * 2020-07-09 2022-01-15 Trumpf Maschinen Austria Gmbh & Co Kg Biegevorrichtung mit Durchbiegungsausgleich
AT523965B1 (de) * 2020-07-09 2023-08-15 Trumpf Maschinen Austria Gmbh & Co Kg Biegevorrichtung mit Durchbiegungsausgleich
US20240082901A1 (en) * 2021-04-15 2024-03-14 Bystronic Laser Ag Bending machine for bending workpieces, in particular a press brake

Also Published As

Publication number Publication date
TR201112647A2 (tr) 2012-05-21

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