EP3122485B1 - Überschlagbare biegemaschine - Google Patents

Überschlagbare biegemaschine Download PDF

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Publication number
EP3122485B1
EP3122485B1 EP15718619.8A EP15718619A EP3122485B1 EP 3122485 B1 EP3122485 B1 EP 3122485B1 EP 15718619 A EP15718619 A EP 15718619A EP 3122485 B1 EP3122485 B1 EP 3122485B1
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EP
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Prior art keywords
bending machine
machine according
horizontal
bending
machine
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EP15718619.8A
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English (en)
French (fr)
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EP3122485A1 (de
Inventor
Libero Angelo MASSARO
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    • 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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/08—Bending rods, profiles, or tubes by passing between rollers or through a curved die
    • 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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/12—Bending rods, profiles, or tubes with programme control

Definitions

  • the present invention generally relates to machines for bending tubes or profiles, in particular metal tubes or profiles, bars or the like.
  • the machines for bending tubes or profiles, in particular made of metal, have already been known in the art for a long time and are used by artisans and industries. They serve to obtain curved tubes/profiles applicable to numerous technical fields, for example to process engineering plants (chemical, air-conditioning, fluid cooling and/or heating plants, etc.), as well as to obtain support and/or safety and protection structures, such as parapets, podiums and scaffolding, to name just a few examples.
  • a first type being the matrix and countermatrix type, but in this case, since the matrix has a fixed radius, it is not possible to use the same machine to obtain curves of any radius on an initially straight tube, profile, or the like.
  • the second type of machine employed to bend tubes, profiles, or the like, in particular made of metal is the bending machine, which is able to bend tubes or profiles according to a substantially arbitrary radius, settable by the operator, such as in DE 202 03 583 U1 .
  • This second type of tube-bending machine corresponding in general to that addressed in the present invention patent application, has a series of deforming rollers, some of which are fixed and other are movable.
  • the tube or profile, or the bar, and in general the workpiece having an oblong shape that is elongated is introduced in the bending machine between the deforming fixed and movable rollers, and is bent by automatically moving the movable rollers.
  • the machines must also be very precise to adhere exactly to the machining tolerances required, in particular in relation to the radius of the curve made on the tube, profile, or the like.
  • the object of the present invention is to provide a bending machine for bending tubes, profiles or the like, in particular made of metal, that can solve the above problems.
  • Figure 1 shows very schematically the bending machine of the present invention in vertical position, seen frontally.
  • the bending machine of the invention can assume both the vertical position and the horizontal position, to remedy the problems of the prior art. In this manner it is not necessary to purchase different machines, but it will be sufficient for the artisan (or the user in general) to only have the machine of the present invention, which due to its versatility is adapted to various situations, being able to work both "horizontally” and “vertically”.
  • the machine in the embodiment shown essentially comprises a machine body 1 mounted so as to be able to oscillate around a horizontal axis, on a frame consisting of a base 4 (fixed to the ground) and two sides 3a, 3b integral with and orthogonal to the base 4 itself.
  • the "face" of the machine in Fig. 1 constitutes the machining platform 2, which in this position is perfectly vertical while in the horizontal position of the machine (see Fig. 3 ) is obviously perfectly horizontal.
  • the bending machine has the ordinary deforming rollers; in the present case two (lateral) fixed deforming rollers 9a, 9b and one (central) movable deforming roller 9c.
  • the rollers 9a, b, c are all mounted on respective axes (directed horizontally in Fig. 1 and vertically in Fig. 3 ).
  • the movable deforming roller 9c is actuated (e.g., by a pneumatic or hydraulic actuation system) and can slide vertically along a guide (slot or window), omitted for the sake of simplicity from the figures enclosed to the present application.
  • the piece 12 to be bent e. g. a profile, tube, bar or the like, indicated by the reference numeral 12, is initially straight and is arranged resting on the two fixed deforming rollers 9a, 9b, which have an annular groove adapted to receive the cross section of the piece 12, so as to be able to retain it with respect to the transverse direction (direction orthogonal to the plane of Fig. 1 that is parallel to the axis 10 of the deforming rollers). Then the movable deforming roller 9c is lowered (by means of said actuation system), along its vertical straight guide (not shown in the figures), until abutting on the upper side the profile 12 still perfectly rectilinear and horizontal.
  • the movable deforming roller 9c is lowered (by means of said actuation system), along its vertical straight guide (not shown in the figures), until abutting on the upper side the profile 12 still perfectly rectilinear and horizontal.
  • the deforming roller 9c then deforms the piece 12 with a determined deflection coefficient set by the operator.
  • a suitable actuation system of known type, one is then able to progressively bend the entire piece 12 for a predefined length.
  • the length of the piece 12 which has already “passed” the deforming rollers is, as known, constantly monitored, for example by a measuring device 11 (an encoder or the like), so as to exactly match the desired machining length at the end of the machining of the piece 12.
  • the encoder 11 is also able to constantly measure the curvature (that is the deflection) of the piece 12 on the extrados that is the outer part, convex towards the outside, of the curve formed by the piece 12; moreover, the same encoder 11 is suitably calibrated (in the testing phase of the machine) by using a rigid bar, to find the zero point of curvature, or "zero bar” point, as it is called in such parallel patent application by the same Applicant of the present patent application.
  • An encoder and a calibration method of this kind could be used also in the bending machine of the present invention, to initially calibrate the machine in the testing phase and thus obtain results that more closely match the needs of the end user.
  • encoder 11 it is also intended two encoders, that is a system comprising two encoders, one to measure/monitor the length of the piece 12 during machining, and the other to measure/monitor the deflection coefficient with greater precision than conventional systems.
  • a system that allows the machine body 1 to oscillate around a horizontal axis, with respect to the left and right sides 3a and 3b integral with the base 4 (which is fixed to the ground).
  • This system allows the bending machine of the present invention to be used in complete safety, both in the vertical position ( Fig. 1 ) and in the horizontal position ( Fig. 3 ).
  • the expression "in complete safety” it is intended that the machine body is sufficiently stable in these positions in order to be able to carry out the machining, so that there are no risks for the operator using the machine.
  • the machine body is preferably obviously locked in these positions (vertical or horizontal).
  • the same system that allows the machine body 1 to rotate around the horizontal oscillation axis therefore also preferably comprises a locking system which allows locking of the machine body 1 in the vertical and/or horizontal position, preferably in both positions.
  • the machine body 1 has two side walls 13a, 13b.
  • two first perforated bushings 5 and two second perforated bushings 6 are integrally formed (one on each side wall), which are all extended towards the outside of the respective side wall 13a and 13b of the machine body 1.
  • the sides (left and right) 3a, 3b of the fixed frame of the machine have two semicircular projections 14, 14, on which an oscillation/rotation axis 8 of the machine body 1 - that is of the respective machining platform 2 with respect to the sides 3a and 3b - is centrally provided, said oscillating axis 8 being only schematized in the figures (a clear representation of the relative bearings, holes and the like is omitted).
  • the first perforated bushing 5 is laterally offset with respect to the oscillation axis 8, and the same applies to the second perforated bushing 6.
  • first perforated bushings 5 and the second perforated bushings 6, integral in pairs with the corresponding side wall (13a or 13a), are only shown by dotted lines in Fig. 4b (and in Figs. 2 and 3 ), since they are obviously hidden by the respective annular projection 14 of the corresponding side 3a or 3b. From Figure 4b , it is also noted that, with respect to the oscillation axis 8, the second bushing 6 is also angularly offset by 90° from the first bushing 5.
  • Each of said upper circular projections 14 of one side bears a non-threaded through hole 16 ( Fig. 4 ; offset to the right in Fig. 4b with respect to the position of the oscillation axis 8 of the machine body 1), for the passage of the threaded pin 15 of a corresponding threaded hand wheel 7 for locking the machine body 1 in position.
  • the non-threaded through hole 16 for the passage of the pin 15 of the hand wheel 7 is offset to the right (on the side 3a) with respect to the oscillation axis 8.
  • the first bushings 5 serve for locking in the vertical position, as shown by the figures, given that the threaded pin 15 of the hand wheel is in this case inserted in the threaded hole 17 of the first bushing 5.
  • the latter is first rotated by 90° (after having unscrewed the two pins 15 of the two hand wheels 7 from the threaded holes 17 of the two first bushings 5), next the same two threaded pins 15 of the two hand wheels 7 are screwed into the two second bushings 6, that is in the threaded holes 18 thereof.
  • a motor could also be employed (hydraulic or electric) to move (rotate) the machine body 1 with respect to the fixed frame 3, 4.
  • the actuation could be by means of pedal or button.
  • the actuation could also comprise several degrees of inclination of the machining platform 2 ( Fig. 1 ), not necessarily only 0° and 90° with respect to the horizontal (workshop floor).
  • the machining platform 2 could also have any structure, not perfectly flat, so that the figures enclosed to the present patent application are only illustrative and only serve to express the inventive concept and not to limit the invention with respect to what is already known in the art of this field.
  • rollers 9a and 9b could in fact be movable in the horizontal direction only, to make (preliminary) adjustments in that direction.
  • the distribution of masses in the machine body 1 can be such that the machine body 1 is perfectly balanced with respect to the oscillation axis 8, so that in this case the machine body 1 can be rotated without any effort, to reach the final locking position desired.
  • the distribution of masses in the machine body 1 can be such that the machine body 1 naturally tends (once unlocked) towards the vertical position of Fig. 1 .

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

Claims (9)

  1. Biegemaschine zum Biegen von Teilen (12) von länglicher Gestalt, zum Beispiel Profilen, Metallstangen oder dergleichen, die Deformationsrollen (9a, 9b; 9c) aufweist, die frontal mit parallelen Rotationsachsen (10) auf einem Körper (1) der Biegemaschine montiert sind, wobei zumindest eine der Rollen (9c) mittels eines Betätigungssystems innerhalb einer vertikalen Führung entlang des Körpers (1) der Biegemaschine verschiebbar sind, wobei ihre Rotationsachse (10) zu sich selbst parallel gehalten wird, und zumindest eine der genannten Deformationsrollen (9a, 9b; 9c) durch ein weiteres Betätigungssystem so betätigt werden kann, dass es um die Rotationsachse (10) hiervon rotiert, wobei das Werkstück (12) positioniert werden kann, um eine Bearbeitung zwischen den Deformationsrollen (9a, 9b; 9c) auszuführen, dadurch gekennzeichnet, dass der genannte Körper (1) der Biegemaschine auf bewegliche Weise auf zwei stationären Seiten (3a, 3b) eines fixierten Rahmens (3a, 3b, 4) der Biegemaschine montiert ist, der außerdem eine mit den stationären Seiten (3a, 3b) selbst integrale Basis (4) aufweist, wobei der genannte Körper (1) in der Lage ist, zumindest zwei 90° zueinander befindliche Bearbeitungspositionen zu erreichen, das heißt, eine horizontale Position und eine vertikale Position.
  2. Biegemaschine gemäß Anspruch 1, dadurch gekennzeichnet, dass der genannte bewegliche Körper (1) der Biegemaschine auf den zwei stationären Seiten (3a, 3b) auf einer horizontalen Oszillationsachse (8), die die zwei stationären Seiten (3a, 3b) miteinander verbindet, montiert ist.
  3. Biegemaschine gemäß Anspruch 1 oder 2, dadurch gekennzeichnet, dass ein Verriegelungssystem (5, 6; 7, 15, 16, 17, 18) vorhanden ist, um den Körper (1) in zumindest einer von zwei alternativen Bearbeitungspositionen, horizontal und vertikal, mit den Seiten (3a, 3b) zu verriegeln.
  4. Biegemaschine gemäß Anspruch 3, dadurch gekennzeichnet, dass die Verteilung der Masse in dem Körper (1) dergestalt ist, dass letzterer in einem unverriegelten Zustand des Verriegelungssystems (5, 6; 7, 15, 16, 17, 18) spontan dazu neigt, sich in die vertikale Position zu bewegen.
  5. Biegemaschine gemäß Anspruch 3 oder 4, dadurch gekennzeichnet, dass das genannte Verriegelungssystem (5, 6; 7, 15, 16, 17, 18) vollständig manuell ist und es entsprechende Handräder (7) aufweist, die mit Gewindepins (15) versehen sind, welche in erste bzw. zweite Lochbuchsen (5, 6) mit Gewinde geschraubt werden können, wobei derartige erste und zweite Lochbuchsen (5, 6) mit zwei entsprechenden Seitenwänden (13a, 13b) des beweglichen Körpers (1) der Biegemaschine integral sind und der Gewindepin (15) eines jeden Handrads (7), bevor er in die jeweilige Buchse (5 oder 6) geschraubt wird, in der Lage ist, ein jeweiliges, mit dem Gewindeloch (17 oder 18) der zugehörigen Buchse (5 oder 6) zur Fluchtung bringbares Durchgangsloch (16) zu passieren.
  6. Biegemaschine gemäß Anspruch 3, dadurch gekennzeichnet, dass die Verteilung der Masse in dem Körper (1) dergestalt ist, dass der Körper (1), wenn das Verriegelungssystem (5, 6; 7, 15, 16, 17, 18) unverriegelt ist, in beiden Rotationsrichtungen mit einer minimalen Anstrengung um die Oszillationsachse (8) manuell rotiert werden kann.
  7. Biegemaschine gemäß Anspruch 1, dadurch gekennzeichnet, dass ein Betätigungssystem vorhanden ist, zum Beispiel ein Elektro- oder Hydraulikmotor, um den Körper (1) der Biegemaschine in die vertikale Position bzw. in die horizontale Position zu befördern.
  8. Biegemaschine gemäß Anspruch 2 und 7, dadurch gekennzeichnet, dass das genannte Betätigungssystem, zum Beispiel mit einem Elektro- oder Hydraulikmotor, direkt mit der horizontalen Oszillationsachse (8) des beweglichen Körpers (1) der Biegemaschine gekoppelt ist.
  9. Biegemaschine gemäß einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass es einen Encoder (11) vorsieht, der dazu geeignet ist, den Biegekoeffizienten des Stücks (12), wenn es geborgen wird, auf dem konvexen Teil des Stücks (12) exakt zu detektieren.
EP15718619.8A 2014-03-27 2015-03-26 Überschlagbare biegemaschine Active EP3122485B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITRM20140159 2014-03-27
PCT/IB2015/052235 WO2015145385A1 (en) 2014-03-27 2015-03-26 Overturnable bending machine

Publications (2)

Publication Number Publication Date
EP3122485A1 EP3122485A1 (de) 2017-02-01
EP3122485B1 true EP3122485B1 (de) 2018-01-31

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US (1) US20170128997A1 (de)
EP (1) EP3122485B1 (de)
WO (1) WO2015145385A1 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108817157A (zh) * 2018-05-29 2018-11-16 泰安华鲁锻压机床有限公司 磁悬浮用f轨弯曲的装置和方法
CN112208086B (zh) * 2020-09-17 2022-11-08 重庆市万州区泳昌护栏有限公司 一种百叶窗加工用便于定位的封边条热弯装置
CN113882296B (zh) * 2021-10-09 2022-11-29 尚欢欢 一种高速公路防护栏装配装置

Family Cites Families (12)

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US3052277A (en) * 1958-07-17 1962-09-04 Wirth Arno H Fa Bending machine
US4080815A (en) * 1975-06-09 1978-03-28 The Boeing Company Pinch and forming roll assembly for numerically controlled contour forming machines
US4117702A (en) * 1977-06-06 1978-10-03 The Boeing Company Rolling machines for contouring tapered structural members
IT1226199B (it) * 1988-11-23 1990-12-21 Piegatrici Macch Elettr Impianto utilizzante una macchina piegatrice raddrizzatrice universale.
AT393640B (de) * 1989-09-20 1991-11-25 Evg Entwicklung Verwert Ges Vorrichtung zum biegen von stabfoermigem material zu betonbewehrungselementen
IT1236362B (it) * 1989-10-20 1993-02-25 Fabro Giorgio Del Dispositivo di basculamento controllato ed indipendente piano di raddrizzatura-piegatura
IT1294256B1 (it) * 1997-08-29 1999-03-24 Cml Costr Mecc Liri Srl Macchina curvatrice universale a raggi fissi e a raggi variabili
IT1308472B1 (it) * 1999-05-04 2001-12-17 Tauring S P A Macchina curvatrice di tubi, profilati o similari
WO2001051228A2 (en) * 2000-01-14 2001-07-19 Cosma International, Inc. A sweep forming assembly, a bumper and a method of manufacture thereof
DE20203583U1 (de) * 2002-03-06 2002-08-29 Rasi Maschb U Handels Gmbh Vorrichtung zur Erfassung eines Richtungswinkels, insbesondere eines Biegewinkels, eines Werkstücks, insbesondere eines Biegeteils
DE102007013902A1 (de) * 2007-03-20 2008-09-25 Universität Dortmund Vorrichtung zum Profilbiegen
IT1400500B1 (it) * 2010-06-22 2013-06-11 Crippa Spa Procedimento per la curvatura di tubi, fili o nastri di metallo a serpentina o a molla e macchinaper curva tubi, fili o nastri di metallo per la fabbricazione di una serpentina o una molla presentante un andamento ad elica comprendente una pluralità di spire

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WO2015145385A1 (en) 2015-10-01
US20170128997A1 (en) 2017-05-11
EP3122485A1 (de) 2017-02-01

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