EP2463038A1 - Machine-outil de pliage de panneau avec mouvement amélioré du dispositif de presse de feuille et de dispositif de support de lame - Google Patents

Machine-outil de pliage de panneau avec mouvement amélioré du dispositif de presse de feuille et de dispositif de support de lame Download PDF

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Publication number
EP2463038A1
EP2463038A1 EP11186186A EP11186186A EP2463038A1 EP 2463038 A1 EP2463038 A1 EP 2463038A1 EP 11186186 A EP11186186 A EP 11186186A EP 11186186 A EP11186186 A EP 11186186A EP 2463038 A1 EP2463038 A1 EP 2463038A1
Authority
EP
European Patent Office
Prior art keywords
sheet
panel
blade
bending machine
holder
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
EP11186186A
Other languages
German (de)
English (en)
Other versions
EP2463038B1 (fr
Inventor
Francesco Codatto
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.)
XP TECHNOLOGY Srl
XP TECHNOLOGY Srl
Original Assignee
XP TECHNOLOGY Srl
XP TECHNOLOGY Srl
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Filing date
Publication date
Application filed by XP TECHNOLOGY Srl, XP TECHNOLOGY Srl filed Critical XP TECHNOLOGY Srl
Publication of EP2463038A1 publication Critical patent/EP2463038A1/fr
Application granted granted Critical
Publication of EP2463038B1 publication Critical patent/EP2463038B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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

Definitions

  • the present invention relates to a panel-bending machine tool, suitable to perform mechanical bending of metal sheets.
  • panel-bending machine tools hereinafter panel-bending machines
  • panel-bending machines are suitable to perform bending operations of metal sheets, having elevated axial extensions and reduced thicknesses.
  • Such panel-bending machines usually comprise a bench structure having a horizontal support shelf to support the sheet to be processed.
  • the sheet which a sheet-pressing device and blade-holder device act on is laid on said support shelf.
  • the sheet-pressing device is used to block the sheet firmly to the support shelf to prevent unwanted deformation of the same during the relative stages of bending.
  • the blade-holder device supports the blades, or in general tools of various forms, depending on the mechanical processing to be performed on said sheet, which are pressed against the sheet after this has been firmly blocked to the support plane.
  • the movement of the sheet-pressing and blade-holder devices must be synchronised so as to achieve accurate, fast and efficient processing.
  • the purpose of the present invention is to make a panel-bending machine which overcomes the drawbacks mentioned with reference to the prior art.
  • figure 1a shows a perspective view of a panel-bending machine according to one embodiment of the present invention
  • figure 1b shows a side view of the panel-bending machine in figure 1a ;
  • FIGS. 2a-2b show enlarged views of the detail II in figure 1 , in different operating conditions;
  • figure 3 shows a perspective view of the component III in figure 1a ;
  • figure 4 shows a side view of the component in figure 3 ;
  • figure 5 shows a cross-section view of the component in figure 3 , along the section plane V-V in figure 4 ;
  • figures 6-9 show cross-section views of the component in figure 3 , in different functioning configurations, as described further below.
  • reference numeral 4 globally denotes a panel-bending machine tool, hereinafter panel-bending machine, suitable to perform bending of sheets, such as metal sheets using in the furnishing and household appliances sectors, and the like.
  • the panel-bending machine according to the present invention may also be used to bend non-metal sheets, moreover the concept of sheet should be understood broadly, including for example elements having quite a squat shape, that is to say sheets of elevated thickness.
  • the panel-bending machine 4 comprises a support plane 8 able to support a sheet 12 during the various processing phases.
  • the support plane 8 comprises a plurality of support beams 16 positioned alongside each other so as to form gaps 20 so as to permit the support of the sheet at least partially overhanging said gaps 20.
  • the panel-bending machine 4 further comprises an upright structure 24 which extends perpendicular to said support plane 8 so as to tower over said support plane at least partially overhanging it.
  • the panel-bending machine 4 comprises at least one sheet-blocking device 28 able to constrain the sheet 12 in relation to said support plane 8 during the processing phases of the sheet 12 and at least one blade-holder device 32 fitted with blades 36 suitable to perform bending operations of said sheet 12.
  • the sheet-blocking device 28 and/or the blade-holder device 32 are mechanically constrained to the upright structure 24.
  • the panel-bending machine 4 comprises hydraulic and/or pneumatic operating devices 40 operatively connected both to the sheet-blocking device 28 and the blade-holder device 32.
  • said hydraulic and/or pneumatic operating devices 40 comprise a single device body 42, fixed in relation to the upright structure 24, an internal piston 43 and an external piston 44 being operatively connected to such device body 42, as described further below.
  • the device body 42 is firmly attached to the upright structure 24, while the internal piston and the external piston 43, 44 are mobile in relation to the device body 42 and to the upright structure 24.
  • the internal piston 43 is positioned coaxially and inside the device body 42, and in particular is housed in an inner chamber 45 defined by the device body 42.
  • the internal piston 43 comprises a head 46 and a relative stem 47 to which the head 46 is mechanically connected. During its stroke, the internal piston 43 moves inside said inner chamber 45; in particular both the head 46 and the stem 47 traverse the inner chamber 45.
  • the head 46 divides the inner chamber 45 into a first and a second inner volume 48, 49 variable in relation to the stroke of the internal piston 43 and fluidically separated from each other by means of seals 50 positioned on the head 46 of the internal piston 43.
  • the head 46 comprises a roof 51, opposite the associable stem 47, and a bottom 52, directly facing the stem 47.
  • the surface area of the bottom 52 is less than that of the roof 51, on account of the presence of the stem 47 which reduces the surface area of the bottom 52 suitable to be influenced by the fluid sent under pressure into the inner chamber 45.
  • the internal piston 43 is operatively connected to the blade-holder device 28 and fluidically connected to said inner chamber 45.
  • the device body 42 has a main extension axis X-X.
  • the inner chamber 45 does not necessarily have a circular geometry, in other words, does not necessarily present a circular cross-section in relation to a section plane perpendicular to said main extension axis X-X.
  • said inner chamber 45 may even have a square or rectangular cross-section in relation to said main extension axis X-X.
  • the external piston 44 is positioned coaxially and outside the device body 42, and in particular identifies an outer chamber 53 with the device body 42.
  • the device body 42 has an outer ring 54 which acts as a limit stop for the external piston 44.
  • the outer ring 54 divides the outer chamber 53 into a first and second outer volume 55, 56 suitable to receive pressurised fluid as a result of operation of the external piston 44.
  • the device body 42 has differing diameters at the outer ring 54. for example a lower diameter 57 and an upper diameter 58: this way, the pressurised fluid sent to the first and second outer volume 55, 56 being equal, the thrust resulting for example on the first outer volume 55 will prove greater.
  • the external piston 44 is operatively connected to the blade-holder device 32 and fluidically connected to said outer chamber 53.
  • the two internal and external pistons 43, 44 can be operated independently of each other so as to translate axially in a vertical direction Z-Z, parallel to said main extension axis X-X.
  • each of the two internal and external pistons 43, 44 is a dual effect piston: in other words, each of the two pistons 43, 44 is mobile parallel to said main extension axis X-X, in a vertical direction Z-Z, in the two opposite directions (shown in the drawings by the arrows 'D' and 'U'), that is to say respectively towards and away from said support plane 8.
  • the internal and external pistons 43, 44 are coaxial to each other and to said device body 42 having a main extension axis X-X, said pistons 43, 44 moving parallel to the vertical direction Z-Z parallel to the main extension axis X-X.
  • the sheet-blocking device 28 comprises a blocking portion 59 of the sheet 12 mechanically connected to the internal piston 43 by means of a connection arm 60, external to said device body 42 and substantially parallel to said main extension axis X-X.
  • the blocking portion 59 comprises at least one jaw 64 able to press at least a portion of the sheet 12 to be processed against a corresponding abutment 68 of the support plane 8.
  • Said abutment 68 may be of the fixed or mobile type.
  • the sheet-blocking device 28 is of the sheet-pressing type: in other words, the blocking portion 59 comprises a jaw 64 which presses and compresses the sheet 12 against the support plane 8 so as to block it firmly to it.
  • the abutment 68 is situated near a lateral rim 72 of the support plane 8 so as to permit easy bending of the sheet in correspondence with a portion of the same overhanging said lateral rim 72.
  • the sheet-blocking device 28 comprises a plurality of shaping tools, able to perform deformations on the sheet 12.
  • the blade-holder device 32 preferably comprises a fastening portion 76 external and coaxial to said device body 42, the fastening portion 76 being operatively connected to the external piston 44 and being mobile parallel to said main extension axis X-X.
  • the blade-holder device 32 comprises a blade-holder head 80 mechanically connected by means of at least one skate 84 which forms a mobile coupling in a transversal direction Y-Y, perpendicular to said vertical direction Z-Z.
  • the skate 84 is inserted between the blade-holder head 80 and the fastening portion 76.
  • the coupling made by the skate 84 is a prismatic type coupling which allows a relative transition of the blade-holder head 80 and the fastening portion 76 in a transversal direction Y-Y and prevents a relative movement between the blade-holder head 80 and the fastening portion 76 in a direction perpendicular to said transversal direction Y-Y.
  • the blade-holder head 80 comprises at least one blade 36 suitable to perform bending operations of said sheet 12.
  • the blade-holder head 80 comprises a pair of blades 36 opposite each other, for example in a vertical direction Z-Z, so as to perform opposite bending movements of the sheet 12 depending on the direction of operation 'U' or 'P' of the blade-holder head 80 operated by the relative external piston 44.
  • the functioning of the panel-bending machine is related to the operation of the hydraulic and/or pneumatic operating devices 40.
  • the plastic deformation of the sheet 12 may, for example, take place by means of a bending downwards, pushing the blade-holder device 32 in the direction 'D', as shown for example in figure 2a , and/or by means of a bending upwards, pushing the blade-holder device 32 in the direction 'U', as shown for example in figure 2b .
  • the sheet 12 When the sheet 12 is blocked on the support plane 8, it can be processed by moving the blade-holder device 32, fitted with the respective blades 36.
  • the configurations of maximum lowering and maximum raising of the blade-holder device 32 are illustrated schematically in figures 6 and 8 respectively.
  • the panel-bending machine according to the invention makes it possible to overcome the drawbacks mentioned with reference to the prior art.
  • the use of a single cylinder having a fixed central body makes it possible to significantly reduce the overall dimensions of the operating devices of the panel-bending machine with particular reference to the operation and movement of the sheet-blocking device and the blade-holder device.
  • the panel bending machine according to the present invention has reduced dimensions, weight and costs compared to the panel-bending machines of the prior art.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Feeding Of Workpieces (AREA)
EP11186186.0A 2010-12-10 2011-10-21 Machine-outil de pliage de panneau avec mouvement amélioré du dispositif de presse de feuille et de dispositif de support de lame Not-in-force EP2463038B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITPD2010A000372A IT1402956B1 (it) 2010-12-10 2010-12-10 Macchina utensile pannellatrice con movimentazione migliorata del dispositivo premilamiera e del dispositivo portalame

Publications (2)

Publication Number Publication Date
EP2463038A1 true EP2463038A1 (fr) 2012-06-13
EP2463038B1 EP2463038B1 (fr) 2013-10-09

Family

ID=43737182

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11186186.0A Not-in-force EP2463038B1 (fr) 2010-12-10 2011-10-21 Machine-outil de pliage de panneau avec mouvement amélioré du dispositif de presse de feuille et de dispositif de support de lame

Country Status (3)

Country Link
EP (1) EP2463038B1 (fr)
IT (1) IT1402956B1 (fr)
WO (1) WO2012077047A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104998933A (zh) * 2015-07-14 2015-10-28 绍兴市安雅信自动化技术有限公司 一种双机联动扭轴折弯机控制方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0293964A2 (fr) * 1987-06-03 1988-12-07 SALVAGNINI S.p.A. Machine pour plier des tôles ayant une pince de serrage à compression uniforme
EP0490828A1 (fr) * 1990-12-07 1992-06-17 SAMAT S.r.l. Machine de pliage pour tôles
JPH08164423A (ja) * 1994-12-13 1996-06-25 Murata Mach Ltd 曲げ機械
EP1121996A2 (fr) * 2000-01-31 2001-08-08 Goiti, S.Coop Machine plieuse pour tôles métalliques

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0293964A2 (fr) * 1987-06-03 1988-12-07 SALVAGNINI S.p.A. Machine pour plier des tôles ayant une pince de serrage à compression uniforme
EP0490828A1 (fr) * 1990-12-07 1992-06-17 SAMAT S.r.l. Machine de pliage pour tôles
JPH08164423A (ja) * 1994-12-13 1996-06-25 Murata Mach Ltd 曲げ機械
EP1121996A2 (fr) * 2000-01-31 2001-08-08 Goiti, S.Coop Machine plieuse pour tôles métalliques

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104998933A (zh) * 2015-07-14 2015-10-28 绍兴市安雅信自动化技术有限公司 一种双机联动扭轴折弯机控制方法

Also Published As

Publication number Publication date
WO2012077047A1 (fr) 2012-06-14
ITPD20100372A1 (it) 2012-06-11
EP2463038B1 (fr) 2013-10-09
IT1402956B1 (it) 2013-09-27

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