EP2014382B1 - Tube bending machine - Google Patents

Tube bending machine Download PDF

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Publication number
EP2014382B1
EP2014382B1 EP08011762A EP08011762A EP2014382B1 EP 2014382 B1 EP2014382 B1 EP 2014382B1 EP 08011762 A EP08011762 A EP 08011762A EP 08011762 A EP08011762 A EP 08011762A EP 2014382 B1 EP2014382 B1 EP 2014382B1
Authority
EP
European Patent Office
Prior art keywords
tube
bending
bent
machine
positioning
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.)
Not-in-force
Application number
EP08011762A
Other languages
German (de)
French (fr)
Other versions
EP2014382A1 (en
Inventor
Alessandro Pace
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.)
CRIPPA SpA
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CRIPPA SpA
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Publication date
Application filed by CRIPPA SpA filed Critical CRIPPA SpA
Publication of EP2014382A1 publication Critical patent/EP2014382A1/en
Application granted granted Critical
Publication of EP2014382B1 publication Critical patent/EP2014382B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
    • B21D7/024—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member
    • 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 relates to a machine for bending tubes of any length (short, medium or long) according to the preamble of claim 1 (see US-B1-6 434 995 ), without having to withdraw the tube to be bent, in order to effect curves with a different radius and/or in different bending planes.
  • the machine which is the subject of the present invention is also suitable for bending tubes designated as hybrid, that is to say tubes formed from lengths of metal and lengths of rubber or other non-metallic material.
  • Tube-bending machines which bend tubes by setting about the bending starting from one end of the tube to be bent and keeping the other end of said tube in the positioning device.
  • Tubes bent with said known machines have the disadvantage of oscillating and/or undergoing deformation subsequently to bending because they are left lacking adequate support, in a so-called overhanging position, that is to say restrained at a single point and subjected to the force of gravity.
  • the known tube-bending machines In relation to the bending of tubes generally designated hybrid, that is to say tubes formed from lengths of metal and lengths of rubber or other non-metallic material, the known tube-bending machines have great difficulty in bending said hybrid tubes, because said machines set about bending the tube starting from just one end of said tube, and the bending devices can easily touch the non-metallic parts of the tube, with the risk of damaging it.
  • an orbital machine for bending long tubes is also known, described in document US 7.093.475 .
  • Said machine includes a bending head mounted on a U-shaped arm which rotates around the horizontal axis of the tube to be bent.
  • the machine described in said document has the disadvantage of being able to manipulate tubes of small size because the weight of the head mounted on the above-mentioned U-shaped arm must be small for structural reasons relating to the shape of said arm.
  • the length of the tubes to be bent is anyway limited by the breadth of the U which constitutes the above-mentioned arm, the overall dimensions of the bent tube being limited by the breadth of the U formed by the above-mentioned arm.
  • An object of the present invention is to create a machine for bending metal or hybrid tubes, that is to say tubes formed from lengths of metal and lengths of rubber or other non-metallic material, of any size and length, with characteristics which are such as to be able to overcome the disadvantages mentioned with reference to the known art.
  • no. (1) indicates a machine for bending tubes, consisting of a supporting base (2) which supports a positioning device (3) for the tube to be bent (7) of wholly metallic or hybrid type, that is to say formed from lengths of metal and lengths of rubber or other non-metallic material, by one or more devices (4) for bending the tube (7) to be bent.
  • Said positioning device (3) consists of a turret (5) and a positioning arm (6).
  • Said machine also includes means known to persons skilled in the art for the purpose of making the positioning device (3), by means of the translation of turret (5) and/or device (4), take up mutual positions for the purpose of allowing said device (4) to be moved, according to methods known to persons skilled in the art, for the purpose of bending said tube (7) on the basis of the preset work programme.
  • Said Figure 1 also shows the positioning device (3) provided with means (8) for rotating the positioning arm (6) through up to 360° around the central axis (Y) of the tube (7) to be bent, so as to be able advantageously to bend said tube (7), particularly of hybrid type, in various bending planes having in common said central axis (Y), having among other things the possibility of locking the tube in the intermediate area and being able to start indifferently from either of its ends, thus overcoming the disadvantages of the known machines.
  • FIG. 2 shows the machine of fig. 1 , highlighting the positioning arm (6) equipped with a locking device (9) for the tube (7) to be bent.
  • Said locking device (9) is provided with means (10) for rotating through up to 360° around a fulcrum (F) so as to rotate said tube (7) for the purpose of being able to bend either end of said tube (7) alternatively by means of device (4) on the basis of a preset work programme.
  • Figure 3 shows the machine of figure 1 , demonstrating another embodiment according to which the positioning arm (6), equipped with two locking devices (12) and (13) for the tube (7) to be bent, is provided with means (10) and (11) for rotating through up to 360° around fulcrum (F) and fulcrum (G) so as to rotate said tube (7) for the purpose of being able to bend either end of said tube (7) alternatively and/or an intermediate part of said tube by means of device (4) on the basis of a preset work programme.
  • Figure 4 shows the machine of fig. 1 , equipped with a further bending device (14) capable of moving and being moved by known movement means. Equipping machine 1 with further possibilities of bending enables a considerable increase in the possibilities of bending said tube (7).
  • the machine 1 can be susceptible of numerous variations particularly as regards the positioning of the elements without thereby departing from the scope of the invention as defined by the appended claims.

Abstract

The invention belongs in the field of machines for bending tubes and refers in particular to a machine (1) comprising a supporting base (2), a positioning device (3) for the tube (7) to be bent and a bending device (4) for said tube (7) characterised by having devices capable of rotating through up to 360° in order to bend said tube (7) in various bending planes, including starting alternatively from either end of said tube or, as necessary, at an intermediate part.

Description

    OBJECT OF THE INVENTION
  • The present invention relates to a machine for bending tubes of any length (short, medium or long) according to the preamble of claim 1 (see US-B1-6 434 995 ), without having to withdraw the tube to be bent, in order to effect curves with a different radius and/or in different bending planes.
  • The machine which is the subject of the present invention is also suitable for bending tubes designated as hybrid, that is to say tubes formed from lengths of metal and lengths of rubber or other non-metallic material.
    • THE STATE OF THE ART
  • Tube-bending machines are known which bend tubes by setting about the bending starting from one end of the tube to be bent and keeping the other end of said tube in the positioning device. Tubes bent with said known machines have the disadvantage of oscillating and/or undergoing deformation subsequently to bending because they are left lacking adequate support, in a so-called overhanging position, that is to say restrained at a single point and subjected to the force of gravity.
  • In relation to the bending of tubes generally designated hybrid, that is to say tubes formed from lengths of metal and lengths of rubber or other non-metallic material, the known tube-bending machines have great difficulty in bending said hybrid tubes, because said machines set about bending the tube starting from just one end of said tube, and the bending devices can easily touch the non-metallic parts of the tube, with the risk of damaging it.
  • Among tube-bending machines, an orbital machine for bending long tubes is also known, described in document US 7.093.475 . Said machine includes a bending head mounted on a U-shaped arm which rotates around the horizontal axis of the tube to be bent. The machine described in said document has the disadvantage of being able to manipulate tubes of small size because the weight of the head mounted on the above-mentioned U-shaped arm must be small for structural reasons relating to the shape of said arm. Furthermore, the length of the tubes to be bent is anyway limited by the breadth of the U which constitutes the above-mentioned arm, the overall dimensions of the bent tube being limited by the breadth of the U formed by the above-mentioned arm.
  • The machine described in document US 7.093.475 is capable of bending tubes only in one plane of curvature, having therefore a limited productive capacity.
    • DESCRIPTION OF THE INVENTION
  • An object of the present invention is to create a machine for bending metal or hybrid tubes, that is to say tubes formed from lengths of metal and lengths of rubber or other non-metallic material, of any size and length, with characteristics which are such as to be able to overcome the disadvantages mentioned with reference to the known art.
  • These and other objects are achieved by means of a tube-bending machine according to claim 1.
  • This and other preferred characteristics will become clearer from the following description of some embodiments illustrated, purely by way of example in the attached drawings in which:
    • Figure 1 shows a perspective view of the whole of a tube-bending machine which is the subject of the present invention with a positioning device suitable for rotating through up to 360°;
    • Figure 2 shows the machine of fig. 1 highlighting the locking device and the means suitable for rotating said device up to 360° around fulcrum (F);
    • Figure 3 shows the machine of fig. 1 highlighting the two locking devices and the means suitable for rotating said devices up to 360° around fulcrums (F) and (G);
    • Figure 4 shows the machine of fig. i with a second bending device.
  • With reference to Figure 1, no. (1) indicates a machine for bending tubes, consisting of a supporting base (2) which supports a positioning device (3) for the tube to be bent (7) of wholly metallic or hybrid type, that is to say formed from lengths of metal and lengths of rubber or other non-metallic material, by one or more devices (4) for bending the tube (7) to be bent. Said positioning device (3) consists of a turret (5) and a positioning arm (6).
  • Said machine also includes means known to persons skilled in the art for the purpose of making the positioning device (3), by means of the translation of turret (5) and/or device (4), take up mutual positions for the purpose of allowing said device (4) to be moved, according to methods known to persons skilled in the art, for the purpose of bending said tube (7) on the basis of the preset work programme.
  • Said Figure 1 also shows the positioning device (3) provided with means (8) for rotating the positioning arm (6) through up to 360° around the central axis (Y) of the tube (7) to be bent, so as to be able advantageously to bend said tube (7), particularly of hybrid type, in various bending planes having in common said central axis (Y), having among other things the possibility of locking the tube in the intermediate area and being able to start indifferently from either of its ends, thus overcoming the disadvantages of the known machines.
  • Figure 2 shows the machine of fig. 1, highlighting the positioning arm (6) equipped with a locking device (9) for the tube (7) to be bent. Said locking device (9) is provided with means (10) for rotating through up to 360° around a fulcrum (F) so as to rotate said tube (7) for the purpose of being able to bend either end of said tube (7) alternatively by means of device (4) on the basis of a preset work programme.
  • Figure 3 shows the machine of figure 1, demonstrating another embodiment according to which the positioning arm (6), equipped with two locking devices (12) and (13) for the tube (7) to be bent, is provided with means (10) and (11) for rotating through up to 360° around fulcrum (F) and fulcrum (G) so as to rotate said tube (7) for the purpose of being able to bend either end of said tube (7) alternatively and/or an intermediate part of said tube by means of device (4) on the basis of a preset work programme.
  • Figure 4 shows the machine of fig. 1, equipped with a further bending device (14) capable of moving and being moved by known movement means. Equipping machine 1 with further possibilities of bending enables a considerable increase in the possibilities of bending said tube (7).
  • The machine 1 can be susceptible of numerous variations particularly as regards the positioning of the elements without thereby departing from the scope of the invention as defined by the appended claims.

Claims (3)

  1. A tube-bending machine (1), comprising:
    - a supporting base (2);
    - a positioning device (3) for the tube (7) to be bent,
    - at least one device (4) for bending the tube (7) to be bent,
    - means for making the positioning device (3) and the device (4) for bending said tube (7) take up mutual positions for bending said tube (7), said positioning device (3) comprising a turret (5) and a positioning arm (6) equipped with means (8) suitable for rotating said positioning arm (6) through 360° around the central axis (Y) of the tube (7) to be bent, in order to position said tube (7) for the purpose of being bent by means of said device (4) in various bending planes characterised in that said positioning arm (6) is equipped with at least one locking device (9) for the tube (7) to be bent equipped with means (10) suitable for rotating said locking device (9) through up to 360° around a fulcrum (F) in order to rotate said tube (7) for the purpose of bending either end of the tube (7) alternatively by means of device (4);
  2. A tube-bending machine (1) according to claim 1 characterised in that said positioning arm (6) is equipped with two locking devices (12) and (13) for the tube (7) to be bent and means (10) and (11) suitable for rotating said devices through up to 360° respectively around a fulcrum (F) and a fulcrum (G) in order to rotate said tube (7) for the purpose of bending either end of tube (7) alternatively by means of device (4);
  3. A tube-bending machine (1) according to one of the preceding claims characterised in that it comprises at least one second bending device (14).
EP08011762A 2007-07-09 2008-06-30 Tube bending machine Not-in-force EP2014382B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT001355A ITMI20071355A1 (en) 2007-07-09 2007-07-09 BENDER MACHINE

Publications (2)

Publication Number Publication Date
EP2014382A1 EP2014382A1 (en) 2009-01-14
EP2014382B1 true EP2014382B1 (en) 2010-10-27

Family

ID=39929889

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08011762A Not-in-force EP2014382B1 (en) 2007-07-09 2008-06-30 Tube bending machine

Country Status (5)

Country Link
US (1) US20090173127A1 (en)
EP (1) EP2014382B1 (en)
AT (1) ATE485900T1 (en)
DE (1) DE602008003160D1 (en)
IT (1) ITMI20071355A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014185531A1 (en) * 2013-05-17 2014-11-20 株式会社オプトン Bending processing system
JP6619560B2 (en) * 2015-04-15 2019-12-11 株式会社オプトン Bending machine
US11007563B2 (en) * 2016-04-27 2021-05-18 Advanced Orthodontic Solutions Wire bending machine
DE102018128903A1 (en) * 2018-11-16 2020-05-20 Wafios Aktiengesellschaft Device for bending rod-shaped workpieces
CN109549699B (en) * 2018-12-04 2021-05-25 中南大学湘雅医院 Automatic moulding mechanism of medical interior fixed plate of pitch arc type titanium alloy
CN109530509B (en) * 2018-12-04 2020-01-31 中国科学院宁波材料技术与工程研究所 Automatic moulding mechanism of medical interior fixed plate of sharp type titanium alloy

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6434995B1 (en) * 1999-10-15 2002-08-20 Usui Kokusai Sangyo Kaisha Limited Method of bending small diameter metal pipe and its apparatus
JP4319314B2 (en) * 2000-01-31 2009-08-26 株式会社オプトン Bending machine
FR2859653B1 (en) 2003-09-12 2006-03-17 Silfax Sa ORBITAL MACHINE FOR BENDING TUBES
JP4591908B2 (en) * 2003-12-15 2010-12-01 臼井国際産業株式会社 Pipe bending machine
JP5090636B2 (en) * 2004-09-27 2012-12-05 株式会社オプトン Bending machine
DE102004048036A1 (en) * 2004-09-28 2006-04-06 Ras Reinhardt Maschinenbau Gmbh bender

Also Published As

Publication number Publication date
ATE485900T1 (en) 2010-11-15
EP2014382A1 (en) 2009-01-14
DE602008003160D1 (en) 2010-12-09
ITMI20071355A1 (en) 2009-01-10
US20090173127A1 (en) 2009-07-09

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