EP3833539B1 - Führungsvorrichtung für maschinen zur mechanischen bearbeitung, insbesondere für biegepressen - Google Patents

Führungsvorrichtung für maschinen zur mechanischen bearbeitung, insbesondere für biegepressen Download PDF

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Publication number
EP3833539B1
EP3833539B1 EP19769898.8A EP19769898A EP3833539B1 EP 3833539 B1 EP3833539 B1 EP 3833539B1 EP 19769898 A EP19769898 A EP 19769898A EP 3833539 B1 EP3833539 B1 EP 3833539B1
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EP
European Patent Office
Prior art keywords
guide device
fact
projection portion
bending
housing seat
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.)
Active
Application number
EP19769898.8A
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English (en)
French (fr)
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EP3833539C0 (de
EP3833539A1 (de
Inventor
Enrico PASOTTO
Emiliano CORRIERI
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.)
Triveneta Impianti SRL
Original Assignee
Triveneta Impianti SRL
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Publication of EP3833539A1 publication Critical patent/EP3833539A1/de
Application granted granted Critical
Publication of EP3833539C0 publication Critical patent/EP3833539C0/de
Publication of EP3833539B1 publication Critical patent/EP3833539B1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/08—Accessory tools, e.g. knives; Mountings therefor
    • 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
    • B21D5/002—Positioning devices
    • 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

Definitions

  • the present invention relates to a guide device for machines for mechanical processing, particularly for bending presses.
  • These bending press machines are used for bending sheet-like elements and are provided with a bearing structure provided with a supporting surface and with a recess of suitable shape, made on the supporting surface itself, and on which a sheet-like element to be bent can be positioned.
  • the tools can be associated directly with the work portion of the machine, or by means of the interposition of removable attachment means, which in turn are associated with the work portion of the machine, e.g. by means of bolts.
  • the sheet-like element to be bent is placed on the supporting surface and held in the correct position by one or more abutment elements, after which the work portion, and the bending tool with it, lowers and plastically deforms the sheet-like element by giving it the same curvature as the recess.
  • the sheet-like element may however require a first partial bend, followed by subsequent partial bends which should be the continuation of the previous ones.
  • abutment elements e.g., of a sheet-like element of rectangular shape that requires a diagonal bend, i.e. not parallel to any of its sides.
  • the operator can only insert the head into the machine and visually check the alignment.
  • This technique consists in using a laser device associated with the bending press machine.
  • the laser device generally comprises a projection portion, which emits a light beam to be projected, and an attachment portion, corresponding to the upper part of the device and provided with connecting means such as e.g. threaded elements.
  • the laser device is fixed, by means of the connecting means, to a fixed upright, supplied separately from the bending press machine and fixed thereto through means such as screws or bolts, which require the execution of holes or other works on the bearing structure of the machine.
  • the laser device projects a luminous line onto the sheet-like element, which helps the operator to achieve precise bending and reducing the need to rely on the human eye.
  • JP H08 39153 A describes a guide device according to the preamble of claim 1.
  • Other devices are known from US 6 817 111 B1 and CN 205 816 477 .
  • the main aim of the present invention is to devise a guide device for machines for mechanical processing, particularly for bending presses, that allows precisely guiding the bending of sheet-like elements.
  • Another object of the present invention is to devise a guide device for machines for mechanical processing, particularly for bending presses, that can be applied to any type of bending press machines, reducing the costs related to its use, in particular eliminating the need for elements external to the machine and locked together thereto.
  • a further object of the present invention is to improve the precision achievable in bending with respect to the prior art, also for sheet-like elements for the positioning of which it is not possible to use abutment elements.
  • Yet another object of the present invention is to devise a guide device for machines for mechanical processing, particularly for bending presses, which is versatile and easy to dismantle and reassemble on other machines.
  • Another object of the present invention is to devise a guide device for machines for mechanical processing, particularly for bending presses, that allows overcoming the mentioned drawbacks of the prior art in a simple, rational, easy and effective to use as well as low cost solution.
  • reference numeral 1 globally indicates a guide device for machines for mechanical processing, particularly for bending presses.
  • the guide device 1 is assembled on a machine 2, which the present invention also relates to.
  • the machine 2 comprises a bearing structure 3 having a supporting surface 4, having a recess 26 of suitable shape and on which at least one sheet-like element 5 to be bent is positionable.
  • the machine 2 comprises a work portion 6 associated movable with the bearing structure 3 close to/away from the supporting surface 4 and comprising at least one housing seat 7 for housing at least one work tool 8.
  • the work portion 6 is movable vertically in translation.
  • the machine 2 comprises a plurality of housing seats 7.
  • the work tool 8 can be, e.g., of the type of a punch for bending sheet metal or a forming element that is adapted to give a particular shape to the object to be machined.
  • the work tool 8 in particular, is provided with a shaped portion 9 adapted to give a desired shape to a sheet-like element 5.
  • the work tool 8 is also provided with an attachment end 10 which is shaped so as to fit into the housing seat 7.
  • the work tool 8 is fixed in position, e.g., by gripping means 11, which tighten the attachment end 10 and hold it inside the housing seat 7.
  • the attachment end 10 forms the upper part of the work tool 8.
  • the machine 2 comprises the guide device 1, in turn, comprising:
  • the attachment portion 12 comprises at least one fastening element 15 insertable at least partly inside the housing seat 7.
  • the fastening element 15 is the upper part of the attachment portion 12, but it cannot be ruled out that it may be arranged differently, e.g. laterally to the guide device 1.
  • the attachment portion 12 is housed inside the housing seat 7 and the projection portion 13 protrudes cantilevered with respect to the housing seat 7 itself and is coplanar with the work tool 8; this allows the projection of the bending line 14 on the sheet-like element 5, i.e. below the projection portion 13.
  • the guide device 1 is substantially coplanar with the work tool 8 and the latter is substantially parallel to the bending line 14.
  • an attachment end 10 of one or more work tools 8 can also be accommodated in the same housing seat 7.
  • the attachment end 10 and the fastening element 15 have substantially the same shape.
  • the attachment end 10 and the fastening element 15 have coinciding shapes, which means that they can be used in an interchangeable manner inside the housing seat 7 and can be fixed in position in the same way.
  • the attachment portion 12 is associated with the housing seat 7 by means of the gripping means 11, which tighten the fastening element 15 and hold it inside the housing seat 7.
  • attachment portion 12 of the guide device 1 is associated with the housing seat 7 by interposition, e.g., of screws, plugs or pins.
  • attachment portion 12 is just one and is provided with only one fastening element 15 and the projection portion 13 is just one.
  • a guide device 1 provided with a different number of attachment portions 12, of fastening elements 15 and/or of projection portions 13, e.g. provided with two different fastening elements 15 to suit different housing seats 7, or provided with two projection portions 13 emitting different light radiation.
  • the projection portion 13 comprises at least one laser device.
  • the guide device 1 comprises adjustment means 16, 17 of the inclination of the projection portion 13 with respect to the attachment portion 12.
  • these adjustment means 16, 17 comprise:
  • the adjustment means 16, 17 comprise two slots 16 and two corresponding housing holes 17.
  • adjustment means 16, 17 comprise three, four, five, etc.. slots and their respective housing holes 17.
  • the number of slots 16 is different from the number of housing holes 17, e.g. by making two slots 16 and three housing holes 17.
  • blocking means 18 comprising two bolts, which are inserted into the slots 16 and into their respective housing holes 17 and then tightened to block the position of the projection portion 13.
  • the adjustment means 16, 17 are configured to allow the rotation of the projection portion 13 around a substantially horizontal axis 19.
  • the first direction 20 is defined by the line tangent to the upper ends of the slots 16, while the second direction 21 is defined by the line passing through the center of the housing holes 17.
  • intersection of the first direction 20 and of the second direction 21 forms an angle 22 the amplitude of which is proportionate to the inclination of the projection portion 13.
  • the slots 16 have a width 23 greater than the diameter of the housing holes 17; this feature allows varying the width of the angle 22.
  • the projection portion 13 is associated with the attachment portion 12 by interposition of connecting means 24.
  • the guide device 1 also comprises on/off switching means 27 of the laser device.
  • the on/off switching means comprise at least one button element associated with the projection portion 13.
  • the laser device projects a continuous light beam, until the operator switches off the laser device by pressing the button element again.
  • the on/off switching means comprise a wireless device configured to allow the on and/or off switching of the laser device remotely.
  • the wireless device is of the Bluetooth type.
  • the guide device 1 comprises a programming and control unit operationally connected to the wireless device and configured to allow the on and/or off switching of the laser device at predefined time intervals.
  • the on and/or off switching of the laser device at predefined time intervals allows the operator to be informed when the bending press machine is in the bending phase.
  • the guide device 1 comprises a power supply battery; this allows the laser device to be powered without the use of power cables and greatly simplifying the assembly and disassembly operations of the same onto/from the bending press machines.
  • the work portion 6 of the machine 2 comprises at least one attachment medium 25 comprising the housing seat 7.
  • attachment means 25 each comprising a housing seat 7, associated in a removable manner with the work portion 6 and fixed thereto by means of screws.
  • attachment means 25 comprise two plate elements associated with the work portion 6, which are opposite each other and defining the housing seat 7.
  • the attachment means 25 comprise the gripping means 11.
  • attachment end 10 of a work tool 8 or the fastening element 15 of the guide device 1 are clamped between the two plate elements.
  • these attachment means 25 are absent and that the respective housing seats 7 are formed directly on the work portion 6.
  • the guide device 1 It is necessary to use the guide device 1, e.g., if the bending is particularly complex because not parallel to any side of the sheet-like element 5, or because of the large size of the sheet-like element 5, which requires partial bending operations in sequence which are precisely aligned with each other.
  • the guide device 1 is fixed to one of the attachment means 25 by means of the gripping means 11.
  • the attachment portion 12 is directly housed in the housing seat 7, while the connecting means 24, inserted in the housing holes 17 and in the slots 16, are left momentarily loose, so as not to fix the position of the projection portion 13 yet.
  • the guide device 1 is substantially coplanar to the work tools 8 themselves.
  • a sheet-like element 5 is now placed on the supporting surface 4.
  • the laser device of the projection portion 13 is switched on, which projects the bending line 14 onto the sheet-like element 5.
  • the guide device 1 is substantially coplanar with the work tools 8 and movable therewith during the operation of the machine 2, the bending line 14 is aligned with the work tools 8 themselves and with the recess 26, thus indicating the position and orientation of the bending operation that will be carried out.
  • the projection portion 13 is rotated around the axis 19, so that the bending line 14 is projected onto the sheet-like element 5, avoiding blurring and other possible defects in the brightness of the emitted radiation.
  • the connecting means 24 are tightened to fix the selected inclination of the projection portion 13.
  • the position of the sheet-like element 5 can then be changed again on the supporting surface 4, e.g. to align a partial bend carried out previously with the bending line 14 (i.e. also with the partial bend to be carried out later), or to place correctly a bend which is not parallel to the sides of the sheet-like element 5.
  • the work portion 6 is then moved downwards so that the work tools 8 give the bend with the same shape as the recess 26 to the sheet-like element 5.
  • the guide device 1 is coplanar with the work tool 8 with high precision level and the bending line 14 indicates exactly the position of the bending that is about to be given, since the guide device 1 is placed in a housing seat 7 and moves simultaneously with the work tool 8 used.
  • the guide device for machines for mechanical processing particularly for bending presses, allows precise bending of sheet-like elements to be guided, thanks to the fact that it is always integral and coplanar with the work tool used.
  • this guide device can be applied to any type of bending press machine, thus reducing the costs related to its use and, in particular, eliminating the need for elements external to the machine and locked together with it, as this guide device can be associated with the same attachment means to which the work tools are fixed.
  • this guide device improves the achievable bending accuracy compared to the prior art, even for sheet-like elements for the positioning of which it is not possible to use the abutment elements of the bending press machine.
  • this guide device is versatile and easy to disassemble and re-assemble on other machines, as it simply requires the use of housing seats already supplied with the bending press machines.

Landscapes

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

Claims (14)

  1. Führungsvorrichtung (1) für Maschinen (2) zur mechanischen Bearbeitung, mit mindestens einem Gehäusesitz (7) mindestens eines Arbeitswerkzeugs (8), insbesondere für Biegepressen, umfassend:
    - mindestens einen Anbringungsabschnitt (12), der dem mindestens einen Gehäusesitz (7) abnehmbar zugeordnet ist;
    - mindestens einen Projektionsabschnitt (13), der dazu ausgebildet ist, eine Lichtstrahlung zu projizieren, die mindestens eine Biegelinie (14) auf einem zu biegenden plattenförmigen Element (5) definiert;
    dadurch gekennzeichnet, dass sie Ein/Aus-Schaltmittel (27) der Laservorrichtung umfasst, die mindestens eine drahtlose Vorrichtung umfassen, die so ausgebildet ist, dass sie das Ein- und/oder Ausschalten der Laservorrichtung aus der Ferne ermöglicht, und dadurch, dass sie eine Programmier- und Steuereinheit umfasst, die mit der genannten drahtlosen Vorrichtung in Wirkverbindung steht und dazu ausgebildet ist, das Ein- und/oder Ausschalten der Laservorrichtung in vordefinierten Zeitintervallen zu ermöglichen.
  2. Führungsvorrichtung (1) nach Anspruch 1, dadurch gekennzeichnet, dass der Anbringungsabschnitt (12) mindestens ein Befestigungselement (15) umfasst, das zumindest teilweise in den Gehäusesitz (7) einführbar ist.
  3. Führungsvorrichtung (1) nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Projektionsabschnitt (13) mindestens eine Laservorrichtung umfasst.
  4. Führungsvorrichtung (1) nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie Einstellmittel (16, 17) für die Neigung des Projektionsabschnitts (13) in Bezug auf den Anbringungsabschnitt (12) umfasst.
  5. Führungsvorrichtung (1) nach einem oder mehreren der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Einstellmittel (16, 17) Folgendes umfassen:
    - mindestens einen durchgehenden Schlitz (16), der an dem Anbringungsabschnitt (12) ausgebildet ist;
    - mindestens ein Gehäuseloch (17), das an dem Projektionsabschnitt (13) ausgebildet ist;
    wobei der mindestens eine durchgehende Schlitz (16) und das mindestens eine Gehäuseloch (17) in einer Montagekonfiguration zueinander passen und dazu ausgebildet sind, mindestens ein jeweiliges Blockiermedium (18) aufzunehmen, um den Projektionsabschnitt (13) in einer vordefinierten Position zu blockieren.
  6. Führungsvorrichtung (1) nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Einstellmittel (16, 17) so ausgebildet sind, dass sie die Drehung des Projektionsabschnitts (13) um eine im Wesentlichen horizontale Achse (19) ermöglichen.
  7. Führungsvorrichtung (1) nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Projektionsabschnitt (13) mit dem Anbringungsabschnitt (12) durch Zwischenschaltung von Verbindungsmitteln (24) verbunden ist.
  8. Führungsvorrichtung (1) nach einem oder mehreren der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Ein/Aus-Schaltmittel mindestens ein dem Projektionsabschnitt (13) zugeordnetes Tastenelement umfassen.
  9. Führungsvorrichtung (1) nach einem oder mehreren der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die drahtlose Vorrichtung vom Bluetooth-Typ ist.
  10. Führungsvorrichtung (1) nach einem oder mehreren der vorangehenden Ansprüche, dadurch gekennzeichnet, dass sie eine Versorgungsbatterie umfasst.
  11. Maschine (2) zur mechanischen Bearbeitung, insbesondere zum Biegen plattenförmiger Elemente, umfassend:
    - eine Tragstruktur (3) mit mindestens einer Stützfläche (4), auf der mindestens ein zu biegendes plattenförmiges Element (5) positionierbar ist;
    - mindestens einen Arbeitsabschnitt (6), der mit der Tragstruktur (3) in der Nähe der Stützfläche (4) bzw. von dieser weg beweglich verbunden ist und mindestens einen Gehäusesitz (7) für mindestens ein Arbeitswerkzeug (8) umfasst;
    - mindestens eine Führungsvorrichtung (1) nach Anspruch 1.
  12. Maschine (2) nach Anspruch 11, dadurch gekennzeichnet, dass der Anbringungsabschnitt (12) innerhalb des Gehäusesitzes (7) aufgenommen ist und der Projektionsabschnitt (13) in Bezug auf den Gehäusesitz (7) auskragend vorsteht, wobei der Projektionsabschnitt (13) koplanar mit dem Arbeitswerkzeug (8) ist.
  13. Maschine (2) nach einem oder mehreren der Ansprüche 11 bis 12, dadurch gekennzeichnet, dass die Führungsvorrichtung (1) im Wesentlichen koplanar mit dem mindestens einen Arbeitswerkzeug (8) ist und letzteres im Wesentlichen parallel zu der Biegelinie (14) ist.
  14. Maschine (2) nach einem oder mehreren der Ansprüche 11 bis 13, dadurch gekennzeichnet, dass der Anbringungsabschnitt (12) mit dem Gehäusesitz (7) durch Zwischenschaltung von Greifmitteln (11) verbunden ist.
EP19769898.8A 2018-08-10 2019-08-07 Führungsvorrichtung für maschinen zur mechanischen bearbeitung, insbesondere für biegepressen Active EP3833539B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102018000008050A IT201800008050A1 (it) 2018-08-10 2018-08-10 Dispositivo di guida per macchine per la lavorazione meccanica, particolarmente presse piegatrici
PCT/IB2019/056724 WO2020031109A1 (en) 2018-08-10 2019-08-07 Guide device for machines for mechanical processing, particularly for bending presses

Publications (3)

Publication Number Publication Date
EP3833539A1 EP3833539A1 (de) 2021-06-16
EP3833539C0 EP3833539C0 (de) 2024-02-21
EP3833539B1 true EP3833539B1 (de) 2024-02-21

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Application Number Title Priority Date Filing Date
EP19769898.8A Active EP3833539B1 (de) 2018-08-10 2019-08-07 Führungsvorrichtung für maschinen zur mechanischen bearbeitung, insbesondere für biegepressen

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Country Link
EP (1) EP3833539B1 (de)
IT (1) IT201800008050A1 (de)
WO (1) WO2020031109A1 (de)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6817111B1 (en) * 2003-09-30 2004-11-16 James M. Corrado Alignment tool for positioning a cutting tool of a shaping machine

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Publication number Priority date Publication date Assignee Title
JPH0839153A (ja) * 1994-07-29 1996-02-13 Amada Co Ltd 板材曲げ加工方法およびその曲げ位置設定装置
AT408026B (de) * 2000-02-04 2001-08-27 Trumpf Maschinen Austria Gmbh Sicherheitseinrichtung für eine fertigungsmaschine, z.b. eine abkantpresse
CN202741501U (zh) * 2012-04-19 2013-02-20 安徽东海机床制造有限公司 红外线对线折弯装置
CN202715682U (zh) * 2012-07-29 2013-02-06 中国北车集团大连机车车辆有限公司 冲压机床对线校准装置
CN204672840U (zh) * 2015-05-23 2015-09-30 安徽中德机床股份有限公司 一种折弯机用对线校准装置
CN205816477U (zh) * 2016-07-10 2016-12-21 孔兵 一种折弯机用激光对线校准器
CN206716879U (zh) * 2017-03-14 2017-12-08 韩山师范学院 一种折弯机激光对线装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6817111B1 (en) * 2003-09-30 2004-11-16 James M. Corrado Alignment tool for positioning a cutting tool of a shaping machine

Also Published As

Publication number Publication date
EP3833539C0 (de) 2024-02-21
WO2020031109A1 (en) 2020-02-13
IT201800008050A1 (it) 2020-02-10
EP3833539A1 (de) 2021-06-16

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