EP1772205B1 - Werkzeug zur Bearbeitung von Rohren - Google Patents

Werkzeug zur Bearbeitung von Rohren Download PDF

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Publication number
EP1772205B1
EP1772205B1 EP06291497A EP06291497A EP1772205B1 EP 1772205 B1 EP1772205 B1 EP 1772205B1 EP 06291497 A EP06291497 A EP 06291497A EP 06291497 A EP06291497 A EP 06291497A EP 1772205 B1 EP1772205 B1 EP 1772205B1
Authority
EP
European Patent Office
Prior art keywords
pinion
rack
drive
fact
tool according
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.)
Expired - Fee Related
Application number
EP06291497A
Other languages
English (en)
French (fr)
Other versions
EP1772205A1 (de
Inventor
Yves-Sébastien Boulin
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 EP1772205A1 publication Critical patent/EP1772205A1/de
Application granted granted Critical
Publication of EP1772205B1 publication Critical patent/EP1772205B1/de
Expired - Fee Related 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
    • B21D7/063—Pliers with forming dies

Definitions

  • the invention aims to design a tool for working the tube that is ergonomic, while allowing to develop high efforts on the work head.
  • the invention relates to a tool of the aforementioned type, the drive comprising a second pinion with small teeth, secured to the first pinion, the drive and retaining pawls being engaged with the second pinion.
  • the invention aims to reduce the unlocking force of the retaining pawl for multilayer tubes, which are very elastic.
  • the drive and retaining pawls comprise mutually engageable contact surfaces capable of disengaging the retaining pawl of the second gear under the action of an unlocking movement of the trigger, thus allowing the recoil movement of the rack.
  • the tool of Figure 1 is a manual bender 1 for tube 10, assumed, for the convenience of the description, with its rear right, as shown.
  • the bender 1 is of the crossbow type, and comprises a body 12 on which is articulated an actuating trigger 14 and to which is connected a handle 16 by fixing means.
  • a member 18 integrally supporting a working head 20 is movably connected to the body 12.
  • the working head 20 is in the form of a semi-cylindrical matrix comprising a groove 21 adapted to receive the tube 10 to be bent according to the particular radius desired.
  • a pair of lateral stops 22, intended to support the tube 10 during the bending process, is mounted on either side of a transverse support 24 provided on the body 12.
  • a drive device 24 of the support member 18 is articulated on the body 12 and connected to the actuating trigger 14.
  • the support member 18 comprises a linear rack 26 having large teeth on its underside.
  • the driving device 24 comprises a transverse shaft 26 which pivots in the body 12 and whose ends form bearings 28 and 30. Pads 32 and 34 are respectively mounted on the bearing surfaces 28 and 30.
  • the shaft 26 comprises, in its intermediate portion, a first pinion 40 with large teeth engaged with the rack 26 and a pinion with small teeth 42 secured to the first pinion 40.
  • the first and second pinions 40 and 42 form a stepped pinion made of material by molding and ground by machining.
  • the number of teeth of the first pinion 40 is nine; the number of teeth of the second gear 42 is thirty five.
  • the module of the first pinion 40 is 1.25, while the module of the second pinion 42 is 0.6.
  • the shaft 26, once assembled, is rotatably mounted in the body 12 via bores 36 made in the body 12, and retained in the latter by a circlip 38.
  • the driving device 24 further comprises a driving pawl 44 and a retaining pawl 46, the two pawls 44 and 46 having small teeth adapted to engage those of the second pinion 42.
  • the driving pawls 44 and retaining 46 are identical and generally parallelepipedal shape. One of the faces of the parallelepiped is shaped so as to form four zones.
  • Each of the drive pawls 44 and retainer 46 respectively comprise a toothed zone 44A, 46A, a smooth and concave clearance zone 44B, 46B, and two cam regions 44C, 46C and 44D, 46D located at opposite ends of the face. profiled.
  • the driving pawl 44 and the retaining pawl 46 are mounted diametrically opposite and sliding respectively in the handle 14 and in the body 12.
  • the drive pawl 44 provides the forward movement in the desired direction of the rack 26
  • the retaining pawl prevents the recoil movement, in the opposite direction in the desired direction, of the rack 26.
  • Springs 48 and 50 respectively resting on stops 52 and 54 of the trigger 14 and the body 12, respectively urge the driving pawl 44 and the retaining pawl 46 to their engagement position with the second pinion 42.
  • a helical compression spring 56 whose ends are connected, on the one hand, to the body 12 and, on the other hand, to the trigger 14, urges the latter towards a position spaced from the handle 16.
  • the trigger 14 is hinged in pivot on the body 12 between this position spaced from the handle 16 and a position close to the handle 16. The reciprocating movement of the actuating trigger 14 between the spaced position and the position close to the handle 16 against the the force of the compression spring 56, produces a forward movement in steps of the rack 26 towards the front.
  • the rack 26 is slidably mounted relative to the body 12.
  • the rack may be a toothed sector pivotally mounted relative to the body 12.
  • the trigger 14 is in the spaced apart position of the body 16 by an angle of about 15 °.
  • the areas with small teeth 44A and 46A respectively of the drive pawls 44 and retaining 46 are engaged with those of the second pinion 42, while the smooth areas 44B, 46B respectively pawls 44 and 46 do not interfere with the second pinion 42.
  • a force exerted on the trigger 14 along the arrow F of the Figure 3B tends to bring the trigger 14 closer to the handle 16.
  • the drive pawl 44 remains engaged with the second gear 42 and drives the first gear 40 counterclockwise , which produces a forward movement of the rack 26 along the arrow F 'of the Figure 3B .
  • the toothed zone 46A of the retaining pawl 46 remains in engagement with the teeth of the second pinion 32 and blocks the rotational movement of the second pinion 42 and the first pinion 40 in the clockwise direction. This blocking maintains the rack 26, which is biased to the rear by the bending resistance of the tube being bent, in the advanced position previously obtained.
  • the toothed zone 44A of the drive pawl 44 slides on the teeth of the second pinion 42, causing a recoil movement of the drive pawl 44 against the spring 48. , the ratchet of the drive pawl 44 allowing the trigger 14, in a clockwise movement, to return to its initial position illustrated in FIG. Figure 3A .
  • the recovery angle thus obtained is about 15 °.
  • the input movement of the trigger 14 is decoupled from the advance movement of the rack 26.
  • the actuating trigger 14 is in a position spaced approximately 15 ° from the handle 16.
  • the respective toothed areas 44A and 46A of the drive pawls 44 and retaining 46 are engaged with the teeth of the second gear 42 under the yoke. the biasing force of the respective springs 48 and 50.
  • the first pinion 40 and second pinion 42 in floor being held stationary under the action of the retaining pawl 46, the rack 26 remains stationary in advanced position.
  • a ramp 44I of the cam region 44C of the drive pawl 44 ramp adjacent an end face 44H, contacts an edge 46E defined by the intersection of two sliding surfaces 46F and 46G of the cam zone 46D of the retaining pawl 46.
  • the driving pawl 44 makes a recoil movement represented by the arrow D '''of the Figure 4D against the spring 48.
  • the cam region 44C of the drive pawl 44 abuts the cam region 46D of the retaining pawl 46, the toothed zone 44A of the drive pawl 44 disengages from the teeth of the second pinion 42 by compressing the spring 48.
  • the end face 44H of the drive pawl 44 engages the sliding surface 46G of the retaining pawl 46.
  • the end face 44H of the drive pawl 44 and the sliding surface 46G of the pawl 46 are arranged such that the rotation of the trigger 14 in the clockwise direction represented by the arrow D of the Figure 4E , causes the driving pawl 44 to retract and stop on the trigger 14, as represented by the arrow D "" of the Figure 4E .
  • the toothed zone 44A of the drive pawl 44 is completely disengaged from the teeth of the second pinion 42.
  • the invention which has just been described applies to tube bending work, but can be applied to a tube cutting operation, to the installation of rings at the end of tubes or to the expansion of the tube. end of tubes.

Landscapes

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

Claims (10)

  1. Werkzeug, das für die Bearbeitung von Rohren bestimmt ist, umfassend einen Körper (12), an dem ein hin- und herbeweglicher Betätigungshebel (14) angelenkt ist und mit dem ein Organ (18) beweglich verbunden ist, das einen Bearbeitungskopf (20) trägt; eine Vorrichtung (24) zum Antrieb des Tragorgans (18), die an dem Körper (12) montiert ist und mit dem Betätigungshebel (14) verbunden ist; wobei das Tragorgan (18) eine Zahnstange (26) umfasst, wobei die Antriebsvorrichtung (24) ein erstes Zahnrad (40) mit einem ersten Modul, wobei die Zähne des ersten Zahnrads mit der Zahnstange (26) in Eingriff sind, eine Antriebsklinke (44) und eine Rückhalteklinke (46) umfasst, wobei die Antriebsklinke (44) die Vorbewegung der Zahnstange (26) in der gewünschten Richtung gewährleistet, wobei die Rückhalteklinke (46) die Rückbewegung der Zahnstange (26) in der der gewünschten Richtung entgegengesetzten Richtung verhindert, was eine progressive Vorbewegung unter der Einwirkung einer Antriebs-Hin- und Herbewegung des Betätigungshebels gestattet, dadurch gekennzeichnet, dass die Antriebsvorrichtung (24) ein zweites Zahnrad (42) mit einem zweiten Modul aufweist, der kleiner als der erste Modul ist, wobei das zweite Zahnrad mit dem ersten Zahnrad (40) fest verbunden ist, wobei die Antriebsklinke (44) und die Rückhalteklinke (46) mit dem zweiten Zahnrad (42) in Eingriff sind.
  2. Werkzeug nach Anspruch 1, dadurch gekennzeichnet, dass das erste Zahnrad (40) und das zweite Zahnrad (42) mit einer ersten Zahnzahl bzw. mit einer zweiten Zahnzahl versehen sind und dass die erste Zahnzahl kleiner als die zweite Zahnzahl ist.
  3. Werkzeug nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das erste Zahnrad (40) und das zweite Zahnrad (42) ein einstückiges abgestuftes Zahnrad bilden.
  4. Werkzeug nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Zahnstange (26) bezüglich des Körpers verschiebbar montiert ist.
  5. Werkzeug nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Zahnstange (26) ein Zahnsektor ist, der bezüglich des Körpers verschwenkbar montiert ist.
  6. Werkzeug nach einem der vorhergehenden. Ansprüche, dadurch gekennzeichnet, dass die Antriebsklinke (44) und die Rückhalteklinke (46) Kontaktflächen (44C, 44E, 44F, 44H, 441; 46D, 46E, 46F, 46G, 46J) umfassen, die in gegenseitigem Eingriff sind und geeignet sind, die Rückhalteklinke (46) aus dem zweiten Zahnrad (42) unter der Wirkung einer Entriegelungsbewegung des Betätigungshebels (14) auszurücken, was die Rückbewegung der Zahnstange (26) gestattet.
  7. Werkzeug nach Anspruch 6, dadurch gekennzeichnet, dass die Antriebsklinke (44) mit einem Nocken (46D) der Rückhalteklinke (46) in Kontakt kommt, ihre Beaufschlagungsfeder (50) komprimiert, hinten in Anschlag kommt und dann die Rückhalteklinke (46) ausrückt, indem sie deren Beaufschlagungsfeder (52) komprimiert.
  8. Werkzeug nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Antriebsklinke (44) und die Rückhalteklinke (46) identisch sind.
  9. Werkzeug nach einem der vorhergehenden Ansprüche, umfassend einen Bearbeitungskopf (20), der zum Biegen von Rohren bestimmt ist.
  10. Werkzeug nach Anspruch 9, umfassend einen Arbeitskopf in Form einer Matrize (20) und ein Paar von seitlichen Anschlägen (22) umfasst, die dazu bestimmt sind, ein Rohr (10) bei dem Biegevorgang abzustützen, und auf jeder Seite eines auf dem Körper (12) vorgesehenen Querträgers (24) montiert sind.
EP06291497A 2005-09-30 2006-09-22 Werkzeug zur Bearbeitung von Rohren Expired - Fee Related EP1772205B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0510037A FR2891479B1 (fr) 2005-09-30 2005-09-30 Outil destine au travail de tubes.

Publications (2)

Publication Number Publication Date
EP1772205A1 EP1772205A1 (de) 2007-04-11
EP1772205B1 true EP1772205B1 (de) 2008-04-02

Family

ID=36716990

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06291497A Expired - Fee Related EP1772205B1 (de) 2005-09-30 2006-09-22 Werkzeug zur Bearbeitung von Rohren

Country Status (5)

Country Link
US (1) US7412867B2 (de)
EP (1) EP1772205B1 (de)
DE (1) DE602006000859T2 (de)
ES (1) ES2301145T3 (de)
FR (1) FR2891479B1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7779719B2 (en) * 2006-11-22 2010-08-24 Hsiu-Chih Wang Combination of derailleur shifter and brake lever
WO2012129345A1 (en) * 2011-03-21 2012-09-27 Irwin Industrial Tool Company Tube and pipe benders and methods of bending same
US9839463B2 (en) * 2012-09-06 2017-12-12 Stryker European Holdings I, Llc Instrument for use in bending surgical devices
US9433988B1 (en) * 2015-05-26 2016-09-06 Yung Chi Industry Co., Ltd. Pipe bender
CN105522027A (zh) * 2016-02-03 2016-04-27 合肥长城制冷科技有限公司 一种新型连续弯头设备
CN110328263B (zh) * 2019-07-28 2021-03-19 南京涵曦月自动化科技有限公司 一种模架折弯机
CN112676402B (zh) * 2020-12-31 2021-07-02 扬中市旭禾管业制造有限公司 一种不锈钢管的加工工艺

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1048435A (fr) * 1950-10-12 1953-12-22 Machine à cintrer les tubes, à commande mécanique ou hydraulique
FR2483271A1 (fr) * 1980-05-28 1981-12-04 Gateau Internal Appareil de faconnage de tubes
DE3803128C3 (de) * 1988-02-03 2002-10-24 Foell Remswerk Rohrbiegegerät
DE3925950A1 (de) * 1989-08-05 1991-02-07 Woerlein Randolph Rohrbiegemaschine
US5761950A (en) * 1997-03-10 1998-06-09 Chiu; Ching-Su Tube bender
US7032475B2 (en) * 2001-06-07 2006-04-25 Shimano Inc. Hydraulic gear shift mechanism
US6931908B1 (en) * 2005-01-13 2005-08-23 Ken J. Mitson Tube-bending device

Also Published As

Publication number Publication date
FR2891479B1 (fr) 2009-02-20
ES2301145T3 (es) 2008-06-16
DE602006000859T2 (de) 2009-04-09
FR2891479A1 (fr) 2007-04-06
DE602006000859D1 (de) 2008-05-15
US20070074559A1 (en) 2007-04-05
EP1772205A1 (de) 2007-04-11
US7412867B2 (en) 2008-08-19

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