EP3009207A1 - Gegenform für armbrust-rohrbieger - Google Patents

Gegenform für armbrust-rohrbieger Download PDF

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Publication number
EP3009207A1
EP3009207A1 EP15189635.4A EP15189635A EP3009207A1 EP 3009207 A1 EP3009207 A1 EP 3009207A1 EP 15189635 A EP15189635 A EP 15189635A EP 3009207 A1 EP3009207 A1 EP 3009207A1
Authority
EP
European Patent Office
Prior art keywords
crossbow
tube
face
bending
portions
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
EP15189635.4A
Other languages
English (en)
French (fr)
Other versions
EP3009207B1 (de
EP3009207C0 (de
Inventor
Benoît HAMM
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.)
Virax SA
Original Assignee
Virax SA
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.)
Filing date
Publication date
Application filed by Virax SA filed Critical Virax SA
Publication of EP3009207A1 publication Critical patent/EP3009207A1/de
Application granted granted Critical
Publication of EP3009207B1 publication Critical patent/EP3009207B1/de
Publication of EP3009207C0 publication Critical patent/EP3009207C0/de
Active 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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/06—Bending rods, profiles, or tubes in press brakes or between rams and anvils or abutments; Pliers with forming dies
    • 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
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/26—Stops

Definitions

  • the present invention relates to a cross-form for a bending crossbow of a tube, substantially in the form of a block of which first and second opposite faces are intended to be placed either one or the other. contact of said tube, said first face having a first transverse groove of substantially semi-cylindrical shape adapted to fit a portion of said tube.
  • Crossbows for bending a tube are conventionally composed of a half-moon bending form, and a transverse bar supporting a pair of generally identical counter-forms called to cooperate with the half-moon bending form.
  • the pair of counter bending forms is pivotally mounted on the crossbar, so as to gradually follow the movement of each of the linear parts of the tube located on either side of the zone being bent.
  • the pair of counter bending forms is pivotally mounted on the crossbar, so as to gradually follow the movement of each of the linear parts of the tube located on either side of the zone being bent.
  • WO 2012/129345 also discloses an apparatus for bending a crossbow type tube having two counter-shaped blocks and having two opposite faces equipped with grooves whose profile is adapted to accommodate respectively two different diameters of tube.
  • the present invention aims to overcome this drawback by proposing a bending form against providing a better contact surface with an already curved portion of a tube, said counter bending form having at least one face devoid of sharp edges, so as to avoiding the formation of weakening zones at the tube, such counter form being further designed in such a way as to allow the bending of tubes of different diameters.
  • said second face comprises a second transverse groove having a projecting region adapted to provide a contact in at least three points with a curved portion of concave appearance said tube.
  • said second groove has a first and a second portion, of substantially semi-frustoconical shape, joined to each other by their smallest respective side at a junction zone and located relative to one another. other such that two lines passing respectively through the junction zone and the long side of each of the first and second portions form between them an angle, said long sides extending respectively along two opposite edges of said second face.
  • said angle is between 5 ° and 50 °.
  • said first and second portions are symmetrical with respect to a plane perpendicular to said second face.
  • the invention also provides that the edges formed between the lateral edges of said first and second portions and the second face of the counter form are rounded.
  • each of the ridges formed at the long side of the first and second portions is rounded.
  • the groove has a semi-cylindrical bottom and a convex upper face.
  • said upper face may be curved in an arc of a radius of between 25mm and 55mm.
  • an additional feature of the counter form according to the invention is further defined by the fact that the first groove is arranged to match different diameters of tubes.
  • the present application also aims to protect a bending crossbow of a tube, characterized in that it comprises at least one against form as previously described.
  • counterforms 1, 10 for crossbow 2 for bending a tube 3 are each substantially in the form of a block 4, 40 comprising an upper face 5, 50 and a lower face 6, 60 interconnected by a through hole 7, 70. It is intended for the passage of an axis of rotation 8 by means of which a counter-form 1, 10 is capable of being pivotally mounted on a crossbar 9 of the crossbow 2 of bending to cooperate with the form of bending 11 in half-moon of the latter (cf. Fig. 5 ).
  • Each of the counterforms 1, 10 also comprises a first and a second opposite face 12, 13, 120, 130 intended to be placed either one in contact with a portion of the tube 3.
  • the first face 12, 120 of the counterforms 1, 10 comprises a first transverse groove 14, 140 of substantially semi-cylindrical shape adapted to fit a portion, for example a linear portion, of the tube 3.
  • the first transverse groove 14, 140 of the first face 12, 120 respective against forms 1, 10 is profiled such that it can suitably accommodate different diameters of tubes 3, for example 10 to 22 mm.
  • the second face 13, 130 comprises a second transverse groove 15, 150 having a projecting region specifically adapted to provide contact at at least three points, or even continuous contact, with a portion 31 already curved, of concave shape, of a tube 3.
  • the second groove 15 of the counter form 1 has a first and a second portion 16, 17, of substantially semi-frustoconical shape, joined together at their respective smaller sides, so as to form a junction zone 18. two portions thus together have an hourglass shape.
  • first and second portions 16, 17 are furthermore symmetrical with respect to a plane perpendicular to the second face 13 and are located relative to each other in such a way that two straight lines D1, D2 passing respectively through the junction zone 18 and the long side 19, 20 of each of the first and second portions 16, 17 form between them an angle ⁇ , preferably between 5 ° and 50 °.
  • the long sides 19, 20 of each of the first and second portions 16, 17 extend respectively along each of the lateral edges 21, 22 of the second face 13.
  • edges 23, 24, 25, 26 formed between the lateral edges of said first and second portions 16, 17 and the second face 13 of the counter form 1 are advantageously rounded.
  • each of the ridges 27, 28 formed at the long side 19, 20 of the first and second portions 16, 17 is rounded.
  • Such a configuration is advantageous because the hourglass shape of the transverse groove 15 of the second face 13 of the counter form 1 not only allows to accept tubes of different diameters, for example from 10 to 22 mm, like the first groove 14 of the first face 12, but also to avoid the marking of the tube 3, given the total absence of sharp edges in contact with the bent portion considered the tube 3.
  • the contact between the groove 15 and the bent portion of the tube 3 is increased from two to at least three contacts, the contact force is lowered, with consequent limited marking, or even the absence of marking of the tube 3.
  • FIG. 3 and 4 has the same advantages. Indeed, against form 10 for crossbow 2 bending comprises on its second face 130 intended to come into contact with an already curved portion of a tube 3, a groove 150 which has a bottom 29 of semi-cylindrical shape and a upper face 30 of convex shape, preferably curved in an arc of a circle between 25mm and 55mm, which eliminates any protruding angle on the second face 130. Nevertheless, this configuration does not have the same character adaptability than that of the variant of the Figures 1 and 2 and requires, for each diameter of the tube to be worked, a counter form 10 whose groove 150 is specifically adapted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP15189635.4A 2014-10-13 2015-10-13 Gegenform für armbrust- rohrbieger Active EP3009207B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1459790A FR3026971B1 (fr) 2014-10-13 2014-10-13 Contre forme pour arbalete de cintrage d'un tube

Publications (3)

Publication Number Publication Date
EP3009207A1 true EP3009207A1 (de) 2016-04-20
EP3009207B1 EP3009207B1 (de) 2023-07-05
EP3009207C0 EP3009207C0 (de) 2023-07-05

Family

ID=51987389

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15189635.4A Active EP3009207B1 (de) 2014-10-13 2015-10-13 Gegenform für armbrust- rohrbieger

Country Status (2)

Country Link
EP (1) EP3009207B1 (de)
FR (1) FR3026971B1 (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR641531A (fr) * 1927-09-27 1928-08-06 Machine à cintrer à froid les tubes métalliques
FR1124191A (fr) * 1955-03-29 1956-10-05 Perfectionnements apportés aux cintreuses
US3112787A (en) * 1960-03-03 1963-12-03 Dard Lucien Apparatus for bending tubes, bars and metal sections
FR1592154A (de) * 1968-10-28 1970-05-11
FR2626505A1 (fr) 1988-02-03 1989-08-04 Foell Remswerk Appareil a cintrer des tubes
WO2012129345A1 (en) 2011-03-21 2012-09-27 Irwin Industrial Tool Company Tube and pipe benders and methods of bending same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR641531A (fr) * 1927-09-27 1928-08-06 Machine à cintrer à froid les tubes métalliques
FR1124191A (fr) * 1955-03-29 1956-10-05 Perfectionnements apportés aux cintreuses
US3112787A (en) * 1960-03-03 1963-12-03 Dard Lucien Apparatus for bending tubes, bars and metal sections
FR1592154A (de) * 1968-10-28 1970-05-11
FR2626505A1 (fr) 1988-02-03 1989-08-04 Foell Remswerk Appareil a cintrer des tubes
WO2012129345A1 (en) 2011-03-21 2012-09-27 Irwin Industrial Tool Company Tube and pipe benders and methods of bending same

Also Published As

Publication number Publication date
EP3009207B1 (de) 2023-07-05
FR3026971B1 (fr) 2016-12-23
EP3009207C0 (de) 2023-07-05
FR3026971A1 (fr) 2016-04-15

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