EP2106306A1 - Dispositif pour cintrer un tube metallique par enroulement sur un galet de forme - Google Patents
Dispositif pour cintrer un tube metallique par enroulement sur un galet de formeInfo
- Publication number
- EP2106306A1 EP2106306A1 EP07857411A EP07857411A EP2106306A1 EP 2106306 A1 EP2106306 A1 EP 2106306A1 EP 07857411 A EP07857411 A EP 07857411A EP 07857411 A EP07857411 A EP 07857411A EP 2106306 A1 EP2106306 A1 EP 2106306A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roller
- tube
- ring
- wrinkle
- erase
- 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
Links
- 238000005452 bending Methods 0.000 title claims abstract description 27
- 238000004804 winding Methods 0.000 title claims abstract description 9
- 230000002093 peripheral effect Effects 0.000 claims abstract description 10
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 6
- 230000037303 wrinkles Effects 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 230000000295 complement effect Effects 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000284 resting effect Effects 0.000 description 3
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- B21D7/02—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
- B21D9/00—Bending tubes using mandrels or the like
- B21D9/05—Bending tubes using mandrels or the like co-operating with forming members
- B21D9/07—Bending tubes using mandrels or the like co-operating with forming members with one or more swinging forming members engaging tube ends only
- B21D9/073—Bending tubes using mandrels or the like co-operating with forming members with one or more swinging forming members engaging tube ends only with one swinging forming member
Definitions
- the present invention relates to a device for bending a metal tube by winding on a shaped roller.
- the device according to the invention is particularly applicable to the bending of metal exhaust pipes for motor vehicles.
- the device comprises a shaped roller 1 to obtain the desired bending radius comprising a peripheral groove adapted to receive the tube 2, a mandrel 3 adapted to be introduced into the tube to be bent 2, a cooperating eraser 4 with the tube to be bent and the shape of the roller 1 to prevent the formation of folds on the intrados of the bent portion of the tube 2, means for putting the tube 2 in abutment against the shape of the roller 1 and the wrinkle-erase 4 and means for winding the tube 2 on the shaped roller 1 according to the desired bending angle.
- the mandrel 3 serves to prevent flattening of the tube 2 during bending.
- the means for pressing the tube 2 against the roller 1 comprises a clamping shoe 5 engageable with the tube 2 and resting on a form insert 6 integral in rotation with the roller 1.
- the roller 1 has been rotated about its axis by driving with it, the shaped insert 6 and the clamping shoe 5 thus realizing the bending of the tube 2 around the roller 1.
- the erase -plis 4 prevents the formation of creases on the intrados of the bent part of the tube
- the above bending device makes it possible to obtain excellent tube bending quality.
- the wrinkle-remover avoids the formation of folds on the intrados of the bent part of the tubes.
- a device for bending a metal tube by winding comprising a shaped roller to obtain the desired bending radius having a peripheral groove adapted to receive the tube, a mandrel adapted to be introduced into the bending tube, a fold erase cooperating with the tube to be bent and the shape roller to prevent the formation of folds on the intrados of the bent part of the tube, means for putting the tube in abutment against the shape roller and the wrinkle-wiper and means for winding the tube on the shaped roller according to the desired bending angle, characterized in that the shaped roller comprises a ring housed concentrically in the roller, in free rotation relative to the ci, this ring being located at the bottom of the peripheral groove of the roller and one end of the erase-folds bearing on the outer surface of said ring.
- the wrinkle-erase is supported on a ring which is itself mounted free to rotate relative to the roller, so that, when the rotation of the roller, the ring remains motionless and there is no friction between it and the wrinkle-wrinkle.
- the roller is in two parts axially connected to one another, the ring being located between these two roller parts.
- This two-part arrangement of the roller allows easy mounting of the ring.
- the inner face of a first roller portion has an annular shoulder on which the ring is freely engaged, the second roller portion having a flat inner face bearing against a flat surface of the first roller portion.
- the above shoulder of one of the roller parts serves as a seat for the roller and this seat can rotate freely relative to the ring.
- the ring can thus remain motionless with respect to the wrinkle-erase resting on it.
- the two roller parts are made integral in rotation by means of a key and tightened against each other by means of screws.
- the wrinkle erase is a rectilinear bar-shaped part, one end of which bears tangentially on the ring and the opposite end of which is removably attached to a wrinkle-erase support. This piece is thus easy to machine and replace.
- the wrinkle eraser has a flat face intended to bear on the ring and an opposite curved face adapted to the curvature of the tube to be bent.
- the wrinkle-wiper has a curved face intended to bear on an outer surface of complementary shape of the ring and an opposite curved face of the same shape as the first face adapted to the curvature of the tube to be bent.
- the wrinkle erase can be obtained by cutting a tube along the generatrices thereof.
- the peripheral profile of the two roller parts defining the receiving groove of the tube to be bent has two plane annular surfaces having different inclination angles and connected to each other by an annular recess.
- each roller portion has on its periphery a notch for receiving a shaped insert having a receiving groove of the tube extending tangentially to that of the roller, said notch comprising a guide slide of the shape insert extending perpendicularly to the axis of the roller.
- FIGS. 1 to 6 are diagrammatic side elevational views of a known tube bending device, showing the various operating steps of this device
- FIGS. 8 and 9 are perspective views showing the roller assembly, wrinkle erase and shape insert of a bending device according to the invention
- FIG. 10 is a schematic view in radial section of a tube, of the two parts of the roller, a wrinkle-erase and the ring of the device according to the invention
- FIG. 11 is a sectional view of a wrinkle-erase
- FIG. 12 is a sectional view of an embodiment variant.
- FIG. 13 is a sectional view illustrating an economical method of manufacturing the wrinkle erase shown in FIG. 12
- FIG. 14 is a fragmentary radial sectional view of a modified roller part.
- - Figure 15 is a perspective view of a portion of pebble c omportant another feature of the invention.
- FIGS 7, 8, 9 and 10 illustrate the essential features of the invention.
- the shaped roller 1 comprises a ring 7 housed concentrically in the roller 1, in free rotation relative thereto.
- This ring 7 is located at the back of the throat 8 (see Figure 10) of the roller 1 and one end of the wrinkle-erase 9 bears on the outer surface of the ring 7.
- roller 1 is in two parts la, Ib axially connected to one another, the ring 7 being located between these two roller parts la, Ib.
- FIG. 10 further shows that the inner face of a first roller portion 1a has an annular shoulder Ic on which the ring 7 is freely engaged, the second roller portion Ib having a flat inner face Id resting against a flat surface of the first part of the roller.
- the two roller parts la, Ib are secured in rotation by means of a key (not shown) and tightened against each other by means of screws.
- FIGS. 7 to 9 show that the wrinkle erase 9 is a rectilinear bar-shaped piece, one end of which bears tangentially on the ring 7 and the opposite end of which is removably attached to an erase support 10 -plis.
- the wrinkle erase 9 has a flat face 9a for bearing on the ring 7 and an opposite curved face 9b adapted to the curvature of the tube 2 to be bent.
- the wrinkle-erase has a curved face 9c intended to bear on an outer surface of complementary shape of the ring 7 and an opposite face.
- Curved 9d of the same shape as the first face 9c adapted to the curvature of the tube 2 to be bent.
- the wrinkle wrinkle shown in Figure 12 can be obtained by cutting a tube January 1 generators 12 thereof, as shown in Figure 13, which reduces the manufacturing costs.
- the groove 8 defined by the two roller parts la, Ib intended to receive the tube 2 may have a toroidal profile adapted to the diameter of the tube.
- FIG. 14 shows a roller portion Ib whose peripheral profile defining a part of the groove, has two planar annular surfaces 8a, 8b having different angles of inclination and connected to each other by an annular recess 8c.
- a throat profile is more economical to machine than a toric profile.
- FIG. 15 shows that each roller portion such as Ib has on its periphery a notch 13 for receiving an insert of shape 6 (see FIGS. 7 to 9) having a groove 14 for receiving the tube 2 extending tangentially to that of the roller 1.
- said notch 13 includes a slide 15 for guiding the shaped insert 6 extending perpendicular to the axis of the roller 1. This slide 15 makes it possible to guide the tube 2 engaged in the groove of the insert 6 in the axis of the roller 1 while pinching the two roller parts la, Ib one against the other.
- FIGS. 7, 8, 9 and 10 The main advantages of the invention are illustrated by FIGS. 7, 8, 9 and 10.
- the wear of the wrinkle eraser 9 is thus considerably reduced.
- the wrinkle erase 9 can be used during a very large number of pipe bending operations before being replaced.
- the device that has just been described is particularly well suited to the bending of automobile exhaust pipes.
- this device can of course also apply to the bending of steel or other metal tubes in other applications than the automobile.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0611062A FR2909910B1 (fr) | 2006-12-19 | 2006-12-19 | Dispositif pour cintrer un tube metallique par enroulement sur un galet de forme. |
| PCT/EP2007/063724 WO2008074698A1 (fr) | 2006-12-19 | 2007-12-11 | Dispositif pour cintrer un tube metallique par enroulement sur un galet de forme |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2106306A1 true EP2106306A1 (fr) | 2009-10-07 |
| EP2106306B1 EP2106306B1 (fr) | 2010-04-21 |
Family
ID=38283917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP07857411A Not-in-force EP2106306B1 (fr) | 2006-12-19 | 2007-12-11 | Dispositif pour cintrer un tube metallique par enroulement sur un galet de forme |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP2106306B1 (fr) |
| AT (1) | ATE464957T1 (fr) |
| DE (1) | DE602007006057D1 (fr) |
| ES (1) | ES2340440T3 (fr) |
| FR (1) | FR2909910B1 (fr) |
| WO (1) | WO2008074698A1 (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105382064A (zh) * | 2015-12-04 | 2016-03-09 | 重庆长安空港汽车配件有限责任公司 | 一种弯管机及其组合防皱板 |
| IT201800010409A1 (it) * | 2018-11-16 | 2020-05-16 | Cml Int S P A | Macchina per curvare un pezzo allungato senza formazione di grinze |
| CN113926951A (zh) * | 2021-10-20 | 2022-01-14 | 中国建筑第二工程局有限公司 | 用于预制柱与现浇梁板穿插的钢筋折弯装置 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3696913B2 (ja) * | 1995-01-13 | 2005-09-21 | 株式会社オプトン | 曲げ加工装置 |
| DE10124866A1 (de) * | 2001-05-22 | 2002-12-05 | Peter Schuele | Werkzeug für Biegemaschine |
| JP3725842B2 (ja) * | 2002-03-15 | 2005-12-14 | カルソニックカンセイ株式会社 | パイプ曲げ加工装置およびパイプ曲げ加工方法 |
| JP4031827B2 (ja) * | 2002-10-10 | 2008-01-09 | 三桜工業株式会社 | 二重管の曲げ方法 |
-
2006
- 2006-12-19 FR FR0611062A patent/FR2909910B1/fr not_active Expired - Fee Related
-
2007
- 2007-12-11 ES ES07857411T patent/ES2340440T3/es active Active
- 2007-12-11 WO PCT/EP2007/063724 patent/WO2008074698A1/fr not_active Ceased
- 2007-12-11 EP EP07857411A patent/EP2106306B1/fr not_active Not-in-force
- 2007-12-11 AT AT07857411T patent/ATE464957T1/de not_active IP Right Cessation
- 2007-12-11 DE DE602007006057T patent/DE602007006057D1/de active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2008074698A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2340440T3 (es) | 2010-06-02 |
| ATE464957T1 (de) | 2010-05-15 |
| FR2909910B1 (fr) | 2009-01-30 |
| DE602007006057D1 (de) | 2010-06-02 |
| WO2008074698A1 (fr) | 2008-06-26 |
| FR2909910A1 (fr) | 2008-06-20 |
| EP2106306B1 (fr) | 2010-04-21 |
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