EP2433720A1 - Machine de pliage à quatre cylindres et procédé de pliage et de cintrage ou de laminage en rond de tôles - Google Patents

Machine de pliage à quatre cylindres et procédé de pliage et de cintrage ou de laminage en rond de tôles Download PDF

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Publication number
EP2433720A1
EP2433720A1 EP11181544A EP11181544A EP2433720A1 EP 2433720 A1 EP2433720 A1 EP 2433720A1 EP 11181544 A EP11181544 A EP 11181544A EP 11181544 A EP11181544 A EP 11181544A EP 2433720 A1 EP2433720 A1 EP 2433720A1
Authority
EP
European Patent Office
Prior art keywords
support bracket
roll
bending
cylinder
machine according
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.)
Granted
Application number
EP11181544A
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German (de)
English (en)
Other versions
EP2433720B1 (fr
Inventor
Dieter Kapp
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.)
Theodor Graebener GmbH and Co KG
Original Assignee
Theodor Graebener GmbH and Co KG
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.)
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Publication date
Application filed by Theodor Graebener GmbH and Co KG filed Critical Theodor Graebener GmbH and Co KG
Priority to PL11181544T priority Critical patent/PL2433720T3/pl
Publication of EP2433720A1 publication Critical patent/EP2433720A1/fr
Application granted granted Critical
Publication of EP2433720B1 publication Critical patent/EP2433720B1/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
    • B21D5/14—Bending sheet metal along straight lines, e.g. to form simple curves by passing between rollers

Definitions

  • the invention relates to a four-roll bending machine and a method for bending and rolling of sheet metal, with a top roll, a bottom roll and two side rolls, the ends of the upper roll stationary and the ends of the lower roll and the side rolls mounted adjustable on side posts of a machine frame are, and with a pivotally mounted on the machine frame support bracket having at its upper free end an attacking at the top roller attacking upper pressure piece and at its lower free end an attacking at the lower roller lower pressure piece, wherein the lower pressure piece in the Support bracket is vertically adjustable.
  • a four-roll bending machine is already out of the DE 28 45 965 B1 known, the upper and lower support rollers for supporting the upper roller and the lower roller, wherein the upper and lower support rollers are connected via oppositely operating adjusting devices to the ends of the arcuate support bracket.
  • the size or the diameter of the tubes to be produced is severely limited, since the support bracket can not be pivoted far enough below the working range of the rollers, wherein also bent for bending the second end of the sheet metal sheet by means of a hall crane by 180 ° must become.
  • the invention is therefore an object of the invention to provide a four-roll bending machine and a method of the type specified, in which or in which no hydraulic oil can reach the component to be manufactured, in which or in the tearing out of the foundation screws for the attachment of the support bracket or the machine is excluded with the foundation during the manufacturing process, with or with which the range of sizes or diameters of the pipes to be bent or pipes is not limited, and with the at Bending without using the support bracket, the bending of both sides of the sheet is possible without the sheet must be removed from the machine.
  • the upper pressure piece is fixedly secured to the support bracket, wherein the support bracket is designed to be vertically adjustable. All degrees of freedom of the support bracket can be decoupled from the foundation for the machine frame during the bending or rolling.
  • the support bracket is mounted with its pivot axis between the lateral limbs of a arranged on the base frame of the machine frame lifting fork, wherein attacking the machine frame, pivoting lifting cylinder for the vertical adjustment of the support bracket at the front free ends of the side legs of the lifting fork.
  • pivoting lifting cylinder for the vertical adjustment of the support bracket at the front free ends of the side legs of the lifting fork.
  • the pivot axis of the support bracket is provided in the area of the free ends of the web connecting the lateral legs at the rear ends of the same supporting wheels for the pivoting movement or horizontal movement of the lifting fork.
  • the web At the free ends of the web are in extension of the lateral legs of the lifting fork thrust or pull tabs pivotally mounted with one of its ends about a horizontal axis.
  • the other ends of the thrust and pull tabs are pivotable about a further horizontal axis on bearing blocks of two via a torsion shaft interconnected and mounted on the base frame of the machine frame mounted eccentric.
  • the central axis of the torsion shaft extends at a distance parallel to the horizontal axis of the pivotable bearing at the other ends of the thrust and pull tabs below the same.
  • the eccentric devices each have below the bearing blocks two at the ends of the bearing blocks attacking, on the base frame of the machine frame supporting and in the longitudinal direction of the push or pull tabs arranged in succession locking cylinder.
  • the support bracket is movable by means of a pivotally mounted on the support bracket and on the other hand in the foundation pivot cylinder. In this case, the support bracket is pivoted away by means of the pivoting cylinder to below the upper sides of the lower roller and the side rollers.
  • a feeder for the sheets may be provided on the opposite side of the support bracket.
  • the feed device is pivotally connected to the machine frame and movable over at least one Zustellzylinder.
  • the lifting cylinder for the vertical adjustment of the support bracket and the locking cylinder of the eccentric devices are depressurized, wherein the support bracket Movements occurring at the top roller and at the bottom roller during bending or rolling via the lifting fork and the over the thrust and pull tabs with the same connected eccentric devices in connection with the torsion shaft in all directions follows.
  • the four-roll bending machine Due to the fixed attachment of the upper pressure piece, the four-roll bending machine according to the invention has no hydraulic oil above the sheet to be bent or rolled, so that contamination of the sheet or the later zuzusch spaenden longitudinal groove between the bent ends of the sheet is excluded by escaping hydraulic oil.
  • the vertical delivery of the upper pressure piece to the top roller is achieved by the vertically adjustable support bracket, wherein the support bracket vertically adjusting lifting cylinder is provided below the support bracket.
  • the support bracket is used only for bending sheet metal with larger sheet thicknesses, in which the existing crowning of the rollers is no longer sufficient. Since in conventional four-roll bending without support bracket on the basis of the predetermined crowning of the rollers no optimal bending results of the smallest sheet thickness to the maximum sheet thickness are possible in the four-roll bending machine according to the invention in the sheet thickness, where the existing crown of the rolls is not sufficient and the support bracket is used the pressure of the pressure cylinder adjusted accordingly. As a result, the rolling deflection is reduced and adapted to the existing crown.
  • the Entkoppeliana all degrees of freedom of the support bracket or in that the swivel cylinder for swinging in and out of the support bracket, the lifting cylinder for the vertical adjustment of the support bracket and the locking cylinder of the eccentric devices are unpressurized during bending, allows the rollers and the respective sheet between the Clamping spanning support bracket to follow the movements of the rolls when bending in all directions, the forces acting on the foundation bolts are substantially reduced compared to conventional four-roll bending machines.
  • the four-roll bending machine 1 shown in the figures which serves for bending and rolling of sheet metal on and round, consists of a machine frame 2 and two with the machine frame 2 connected side uprights 3 (in the FIGS. 1 and 2 to 6 has been omitted for better recognition of the front in the foreground stand 3), in which a top roller 4, a bottom roller 5 and two side rollers 6, 7 are stored.
  • the ends of the upper roller 4 are stationary and the ends of the lower roller 5 and the ends of the two side rollers 6, 7 arranged adjustably on the side uprights 3.
  • support bracket 8 To support the upper roller 4 and the lower roller 5 a pivotally mounted on the machine frame 2 support bracket 8 is provided, which has at its upper free end 9 an attacking on the upper roller 4 attacking upper thrust piece 10, which is preferably fixedly secured to the support bracket 8 , At the free lower end 11 of the support bracket 8 is an attacking on the lower roller 5 attacking lower pressure member 12 is provided, which is arranged vertically adjustable in the support bracket 8.
  • pivot cylinder 14 For pivoting the support bracket 8 a hinged on the one hand on the support bracket 8 and the other part in the base 13 pivot cylinder 14 is provided, wherein the pivot cylinder 14 is preferably arranged in the foundation 13, that the support bracket 8 with its upper edge below the tops of the lower roller 5 and the side rollers 6, 7 is swinging away (see Fig. 1 ). This allows unlimited pipe diameters.
  • the swivel cylinder 14 can also be arranged in the foundation 13 in a less preferred embodiment such that the support bracket 8 can be pivoted away with its upper edge only to above the upper sides of the lower roller 5 and the side rollers 6, 7 (see Fign . 3 to 6 )
  • the entire support bracket 8 with the upper pressure member 10 is lowered vertically after pivoting up to the upper roller 4 (see Fig. 5 ) and simultaneously or subsequently the vertically adjustable lower pressure piece 12 is raised to the lower roller 5 (see Fig. 6 ).
  • a pressure cylinder 15 integrated, at the piston rod 16, the lower pressure member 12 is attached.
  • the lifting cylinders 17 engage the front free ends 18 of lateral legs 19 of a lifting fork 20, in which the support bracket 8 with its pivot axis 21 between the lateral Legs 19 which is mounted on the base frame 22 of the machine frame 2 (see Fig. 2 ).
  • the support bracket 8 with its pivot axis 21 between the lateral Legs 19 which is mounted on the base frame 22 of the machine frame 2 (see Fig. 2 ).
  • the base frame 22 supporting wheels 26 for the pivoting movement of the lifting fork 20 when raising and lowering the support bracket 8 and for the horizontal movement of Lifting fork 20 arranged when bending.
  • the pivot axis 21 of the support bracket 8 is provided between the lifting cylinders 17 and the wheels 26.
  • the support bracket 8 can move when bending the respective sheet according to the movement of the rollers 4, 5 in all degrees of freedom, at the free ends 23 of the web 25 in extension of the lateral legs 19 of the lifting fork 20 thrust or pull tabs 27 with the one of its ends 28 pivotally mounted about a horizontal axis 29.
  • the other ends 30 of the push or pull tabs 27 are in turn pivotally mounted about a further horizontal axis 31 on bearing blocks 32 of two interconnected via a torsion 33 and attached to the base frame 22 of the machine frame 2 eccentric 34.
  • the central axis 35 of the torsion shaft 33 extends at a distance a parallel to the horizontal axis 31 of the pivotable mounting at the other ends 30 of the thrust and pull tabs 27 below the same.
  • the eccentric 34 has in each case below the bearing blocks 32 two acting on the ends of the bearing blocks 32, supported on the base frame 22 of the machine frame 2 and in the longitudinal direction of the Push or pull tabs 27 successively arranged locking cylinder 36, which ensure that the eccentric means 34 are blocked during the pivoting of the support bracket 8 to the clamping of the rollers 4, 5 by means of the pressure pieces 10, 12.
  • the locking cylinder 36, the lifting cylinder 17 and the swing cylinder 14 are depressurized, so that the support bracket 8 with the rollers 4, 5 on the lifting fork 20, the push or pull tabs 27, the eccentric 34 and the torsion 33 in can move in all directions, wherein the rollers 4, 5 are clamped with a permanent pressure between the pressure pieces 10, 14.
  • a feeder for the sheets may be provided (not shown), which is preferably pivotally connected to the machine frame 2 and is movable over at least one Zustellzylinder with which the slope of the feeder is adjustable.
  • the support bracket 8 After insertion of the sheet to be bent and the pressure-controlled clamping same between the upper roller 4 and the lower roller 5 by vertical movement of the lower roller 5, the support bracket 8 is first pivoted so far from a Parkpostion until the upper pressure piece 10 is above the upper roller 4, wherein then the support bracket 8 is lowered so far about the lifting cylinder 17 until the upper pressure piece 10 rests on the top roller 4, and at the same time or subsequently the lower pressure piece 12 is vertically lifted by means of the pressure cylinder 15 until the lower pressure piece 12 at the Bottom roller 5 is present. After reaching the required support pressure, the locking cylinder, 36, the lifting cylinder 17 and the swing cylinder 14 are depressurized, whereupon the bending operation of the first side of the sheet by means of the side rollers 6, 7 begins.
  • the sheet is from the four-roll bending machine 1, turned 180 ° and returned to the four-roll bending machine, whereupon the bending operation of the second side of the sheet begins.
  • the locking cylinder, 36, the lifting cylinder 17 and the pivot cylinder 14 again pressurized, the lower pressure member 12 by means of the Andrückzylinders 15 in its lower position and the support bracket 8 by means of the lifting cylinder 16 in its upper position is moved. Thereafter, the pivoting away of the support bracket 8 by means of the pivot cylinder 14, whereupon the actual round bending process can begin.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP11181544.5A 2010-09-23 2011-09-16 Machine de pliage à quatre cylindres et procédé de pliage et de cintrage ou de laminage en rond de tôles Active EP2433720B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL11181544T PL2433720T3 (pl) 2010-09-23 2011-09-16 Giętarka czterowalcowa oraz sposób zaginania i zwijania, względnie walcowania wstępnego i na okrągło blachy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010041296A DE102010041296A1 (de) 2010-09-23 2010-09-23 Vierwalzenbiegemaschine und Verfahren zum An- und Rundbiegen bzw.-walzen von Blechen

Publications (2)

Publication Number Publication Date
EP2433720A1 true EP2433720A1 (fr) 2012-03-28
EP2433720B1 EP2433720B1 (fr) 2013-11-13

Family

ID=45044305

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11181544.5A Active EP2433720B1 (fr) 2010-09-23 2011-09-16 Machine de pliage à quatre cylindres et procédé de pliage et de cintrage ou de laminage en rond de tôles

Country Status (3)

Country Link
EP (1) EP2433720B1 (fr)
DE (1) DE102010041296A1 (fr)
PL (1) PL2433720T3 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20120710A1 (it) * 2012-08-07 2014-02-08 Mauro Meliga Macchina curvatrice per la curvatura di profilati, lamiere e simili
CN104588459A (zh) * 2015-02-10 2015-05-06 南通超力卷板机制造有限公司 一种四辊预弯卷板机
CN104624745A (zh) * 2015-01-20 2015-05-20 江苏和平动力机械有限公司 自动滚圆机
CN105537334A (zh) * 2016-01-25 2016-05-04 上海理工大学 大型船用三辊卷板机
CN106363097A (zh) * 2016-08-31 2017-02-01 北京创然铝塑工业有限公司 一种四辊复合机及卷板工艺
CN108580606A (zh) * 2018-04-27 2018-09-28 姚潘涛 一种三辊联动可调式数控四辊卷板机
CN108817149A (zh) * 2018-05-29 2018-11-16 陈孝 一种水平下调式数控卷板机
CN109047403A (zh) * 2018-09-17 2018-12-21 顺德职业技术学院 缝隙可自动调整的四辊卷圆机
DE102022103815A1 (de) 2022-02-17 2023-08-17 Haeusler Ag Duggingen Biegen eines Blechs zu einem Rohrstück
CN118417384A (zh) * 2024-07-05 2024-08-02 江苏金强钢轮有限公司 一种钢圈加工的折弯装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104607505B (zh) * 2015-01-21 2016-05-25 上海理工大学 卷板机

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2154804A1 (fr) * 1971-10-01 1973-05-11 Verrina Spa
DE2847965B1 (de) * 1978-11-04 1980-04-24 Wilhelm Schaefer Maschb Vierwalzenbiegemaschine
DE2845965A1 (de) 1978-10-21 1980-04-24 Eichenauer Fa Fritz Elektrisches widerstandsheizelement
EP0454619A1 (fr) * 1990-04-12 1991-10-30 Chr. Haeusler Ag Maschinen-, Apparate- Und Stahlbau Machine de cintrage d'une tôle en forme de cylindre
EP0477751A1 (fr) * 1990-09-28 1992-04-01 Promau S.R.L. Cintreuse à rouleaux
JPH08117872A (ja) * 1994-10-25 1996-05-14 Isel Kk ロール曲げ装置の上ロール支持装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2154804A1 (fr) * 1971-10-01 1973-05-11 Verrina Spa
DE2845965A1 (de) 1978-10-21 1980-04-24 Eichenauer Fa Fritz Elektrisches widerstandsheizelement
DE2847965B1 (de) * 1978-11-04 1980-04-24 Wilhelm Schaefer Maschb Vierwalzenbiegemaschine
EP0454619A1 (fr) * 1990-04-12 1991-10-30 Chr. Haeusler Ag Maschinen-, Apparate- Und Stahlbau Machine de cintrage d'une tôle en forme de cylindre
EP0477751A1 (fr) * 1990-09-28 1992-04-01 Promau S.R.L. Cintreuse à rouleaux
JPH08117872A (ja) * 1994-10-25 1996-05-14 Isel Kk ロール曲げ装置の上ロール支持装置

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20120710A1 (it) * 2012-08-07 2014-02-08 Mauro Meliga Macchina curvatrice per la curvatura di profilati, lamiere e simili
WO2014024133A1 (fr) * 2012-08-07 2014-02-13 Mauro Meliga Machine de pliage pour le pliage de profils, feuilles métalliques et analogue
CN104640646A (zh) * 2012-08-07 2015-05-20 毛罗·梅利加 用于使型材、金属片等弯曲的折弯机
US9610625B2 (en) 2012-08-07 2017-04-04 Mauro Meliga Bending machines for bending profiles, metal sheets and the like
CN104624745A (zh) * 2015-01-20 2015-05-20 江苏和平动力机械有限公司 自动滚圆机
CN104588459A (zh) * 2015-02-10 2015-05-06 南通超力卷板机制造有限公司 一种四辊预弯卷板机
CN105537334A (zh) * 2016-01-25 2016-05-04 上海理工大学 大型船用三辊卷板机
CN106363097A (zh) * 2016-08-31 2017-02-01 北京创然铝塑工业有限公司 一种四辊复合机及卷板工艺
CN108580606A (zh) * 2018-04-27 2018-09-28 姚潘涛 一种三辊联动可调式数控四辊卷板机
CN108580606B (zh) * 2018-04-27 2019-11-22 南通威锋重工机械有限公司 一种三辊联动可调式数控四辊卷板机
CN108817149A (zh) * 2018-05-29 2018-11-16 陈孝 一种水平下调式数控卷板机
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
CN109047403A (zh) * 2018-09-17 2018-12-21 顺德职业技术学院 缝隙可自动调整的四辊卷圆机
DE102022103815A1 (de) 2022-02-17 2023-08-17 Haeusler Ag Duggingen Biegen eines Blechs zu einem Rohrstück
DE102022103815B4 (de) 2022-02-17 2023-12-28 Haeusler Ag Duggingen Biegen eines Blechs zu einem Rohrstück
CN118417384A (zh) * 2024-07-05 2024-08-02 江苏金强钢轮有限公司 一种钢圈加工的折弯装置
CN118417384B (zh) * 2024-07-05 2024-10-01 江苏金强钢轮有限公司 一种钢圈加工的折弯装置

Also Published As

Publication number Publication date
DE102010041296A1 (de) 2012-03-29
PL2433720T3 (pl) 2014-04-30
EP2433720B1 (fr) 2013-11-13

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