EP0501928A1 - Rohraufweitungswerkzeug - Google Patents

Rohraufweitungswerkzeug Download PDF

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Publication number
EP0501928A1
EP0501928A1 EP92830067A EP92830067A EP0501928A1 EP 0501928 A1 EP0501928 A1 EP 0501928A1 EP 92830067 A EP92830067 A EP 92830067A EP 92830067 A EP92830067 A EP 92830067A EP 0501928 A1 EP0501928 A1 EP 0501928A1
Authority
EP
European Patent Office
Prior art keywords
flaring
pipe
clamp
jaw
locking
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.)
Withdrawn
Application number
EP92830067A
Other languages
English (en)
French (fr)
Inventor
Ambrogio c/o Refi Automazioni S.p.A. Castelli
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.)
REFI AUTOMAZIONI OLEODINAMICHE Srl
Original Assignee
REFI AUTOMAZIONI OLEODINAMICHE Srl
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 REFI AUTOMAZIONI OLEODINAMICHE Srl filed Critical REFI AUTOMAZIONI OLEODINAMICHE Srl
Publication of EP0501928A1 publication Critical patent/EP0501928A1/de
Withdrawn legal-status Critical Current

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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
    • B21D41/00—Application of procedures in order to alter the diameter of tube ends
    • B21D41/02—Enlarging
    • B21D41/021—Enlarging by means of tube-flaring hand tools

Definitions

  • the present invention relates to an apparatus for flaring or countersinking pipes, and, more specifically, pipes for making pipe fittings.
  • fittings which are mainly used for hydraulic systems, which practically comprise a bush and a fitting body which, by means of conical surfaces, clamp therebetween the end portion, having a 37° tapering, of a pipe length.
  • this flared portion has an excessive length, on the other hand, this flared portion can hinder a proper engagement of the threads of the clamping nut, so as to undesireably lock this clamping nut as the pipe fitting is assembled.
  • the flared portion of the pipe In order to provide a proper coupling, the flared portion of the pipe must be perpendicular and concentric with respect to the pipe and bush, without machining errors.
  • the aim of the present invention is to overcome the above mentioned drawbacks, by providing an apparatus for flaring pipes and, more specifically, fitting pipes, which allows to obtain, by very quick and simple operations, an accurate flaring so as to provide the pipe fitting with very good fitting characteristics.
  • a main object of the present invention is to provide such a pipe flaring apparatus which allows different diameter pipes to be easily flared by simply modifying the clamps locking the pipe and which, moreover, is very reliable in operation.
  • Yet another object of the present invention is to provide such a pipe flaring apparatus which can be easily constructed starting from easily available elements and materials and which, moreover, is very competititve from a mere economic standpoint.
  • an apparatus for flaring pipes and, more specifically, fitting pipes
  • said apparatus comprises a body including a bottom jaw, to which there is articulated a top jaw, said jaws providing seats for respectively receiving a bottom clamp element and a top clamp element, for locking a pipe, at the inner end portions of said clamp elements there being provided an abutment element for axially abutting said pipe, said body, as it is aligned with said clamp elements, supporting a flaring cone element adapted to flare the end portion of said pipe in cooperation with a flaring seat provided by said clamp elements.
  • the apparatus for flaring fitting pipes comprises a body, generally indicated at the reference number 1, which, at the front portion thereof, includes a bottom jaw 2 to which there is articulated a top jaw 3.
  • the jaws 2 and 3 are each provided with a frustum of cone shaped seat, indicated respectively at 4 and 5, said seats having their major bases inwardly turned.
  • a bottom clamp element 8 and a top clamp element 9 which have an outer frustum of cone shape, mating with the shape of the seats 4 and 5.
  • the clamp elements 8 and 9 are each provided with a radially extending lug 10, provided for engaging in a corresponding hole 11 formed in the two seats 4 and 5.
  • the clamp elements 8 and 9 are moreover provided with a cylindric inner surface 15, which has the configuration of the pipe 19 and is advantageously provided with a roughened surface so as to firmly restrain the pipe to be flared.
  • the surface 15 is coupled to a flared portion 16, which corresponds to the flaring to be made on the pipe, as it will become more apparent hereinafter.
  • the body 1 at the surface thereof facing the clamp element region, is provided with an annular tooth member 17, engaging in an annular seat portion 18, formed on the top jaw, so as to operate as a restraining element for preventing any axial disengagement
  • the body 1 supports an abutment element 20, operating as a locating element, for a proper abutment of the pipe 18 which will be introduced into the inside of the cylindric surfaces 15 of the clamp elements.
  • the top jaw After having applied the pipe to be flared, as is shown in Figure 5, the top jaw is closed, said top jaw being provided with a projection 26 including a slanted surface 27; more specifically, said top projection 26 overlies a bottom projection 28 formed on the bottom jaw and having a squared configuration.
  • the body 1 is provided with a locking vice element, indicated at the reference number 30, including a coupling surface 31 having a shape mating the projections 26 and 28 thereby, as it is radially moved toward the closed jaws, it will provide a clamping force, owing to the coupling with the slanted surface 27; thus, a firm and accurate closure will be obtained.
  • a locking vice element indicated at the reference number 30, including a coupling surface 31 having a shape mating the projections 26 and 28 thereby, as it is radially moved toward the closed jaws, it will provide a clamping force, owing to the coupling with the slanted surface 27; thus, a firm and accurate closure will be obtained.
  • the locking vice element 30 is driven by a hydraulic piston, indicated at the reference number 32, which can be driven by a manual lever 33 coupled to said body or, if desired, by means of other driven systems.
  • a diverting assembly which, upon having locked the vice element, will drive the flaring cone element 40, which can slide inside the body 1 and which is adapted to engage inside the pipe 19, so as to flare the pipe, in cooperation with the flaring seats, as is clearly shown in Figures 9 and 10.
  • the flaring cone element As the flaring cone element is caused to advance, it will in turn cause the pipe abutment element to be withdrawn, so as to cause it to engage with the properly arranged end portion of the pipe, to flare it by engaging it against the flaring seats provided by the clamp elements.
  • the provided mechanical means allow the jaws to be firmly restrained in their proper positions, even under the mechanical stress occurring during the flaring operation; moreover, since the jaws are always perfectly clamped, the outer surface of the pipe can be perfectly flared.
  • the disclosed apparatus comprises hydraulic driving means with a manual driving possibility of the locking vice element and the flaring cone element; however there operations can be also performed automatically or by driving means of different types.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
EP92830067A 1991-02-22 1992-02-18 Rohraufweitungswerkzeug Withdrawn EP0501928A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI910470A IT1249243B (it) 1991-02-22 1991-02-22 Apparecchiatura per la svasatura di tubi, e particolarmente di tubi per raccordi
ITMI910470 1991-02-25

Publications (1)

Publication Number Publication Date
EP0501928A1 true EP0501928A1 (de) 1992-09-02

Family

ID=11358711

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92830067A Withdrawn EP0501928A1 (de) 1991-02-22 1992-02-18 Rohraufweitungswerkzeug

Country Status (2)

Country Link
EP (1) EP0501928A1 (de)
IT (1) IT1249243B (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0722794A1 (de) * 1995-01-17 1996-07-24 Sykes-Pickavant Limited Werkzeug zum Ändern des Durchmessers, der Form oder der Konfiguration eines Rohres
GB2392860A (en) * 2002-09-16 2004-03-17 Smart Tools Ltd Pipe flaring apparatus
GB2465007A (en) * 2008-11-04 2010-05-12 Nigel Alexander Buchanan Pipe flaring apparatus
WO2016071806A1 (en) 2014-11-06 2016-05-12 Andel Technology Polska Sp. Z O.O. Improved flaring device for flaring the ends of pipes
ITUA20164611A1 (it) * 2016-06-23 2017-12-23 Eurotis S R L Accessorio per pressatrici elettromeccaniche e/o manuali per la flangiatura o cartellatura di tubi metallici corrugati formabili, particolarmente per tubi in acciaio inox.
WO2019109430A1 (zh) * 2017-12-08 2019-06-13 广州敏实汽车零部件有限公司 一种扩孔机
US10850319B2 (en) * 2010-08-06 2020-12-01 Ags Company Automotive Solutions, Llc Hand held flaring tool

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2466422A (en) * 1943-07-22 1949-04-05 Parker Appliance Co Tube beading and flaring machine
US3052280A (en) * 1957-07-16 1962-09-04 Collin Flaring tool
US3194040A (en) * 1962-11-19 1965-07-13 Parker Hannifin Corp Power flaring tool
DE2752905A1 (de) * 1977-11-26 1979-05-31 Erich Ribback Einstosspresse zum einziehen oder aufweiten von rohrenden

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2466422A (en) * 1943-07-22 1949-04-05 Parker Appliance Co Tube beading and flaring machine
US3052280A (en) * 1957-07-16 1962-09-04 Collin Flaring tool
US3194040A (en) * 1962-11-19 1965-07-13 Parker Hannifin Corp Power flaring tool
DE2752905A1 (de) * 1977-11-26 1979-05-31 Erich Ribback Einstosspresse zum einziehen oder aufweiten von rohrenden

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0722794A1 (de) * 1995-01-17 1996-07-24 Sykes-Pickavant Limited Werkzeug zum Ändern des Durchmessers, der Form oder der Konfiguration eines Rohres
GB2392860A (en) * 2002-09-16 2004-03-17 Smart Tools Ltd Pipe flaring apparatus
GB2392860B (en) * 2002-09-16 2007-06-13 Smart Tools Ltd Pipe flaring apparatus
US7353682B2 (en) 2002-09-16 2008-04-08 American Grease Stick Company Pipe flaring tool
GB2465007A (en) * 2008-11-04 2010-05-12 Nigel Alexander Buchanan Pipe flaring apparatus
US10850319B2 (en) * 2010-08-06 2020-12-01 Ags Company Automotive Solutions, Llc Hand held flaring tool
CN107278175A (zh) * 2014-11-06 2017-10-20 安德尔技术波兰股份公司 改进的用于管端部扩口的扩口设备
US20180297103A1 (en) * 2014-11-06 2018-10-18 Andel Technology Polska Sp. Z O.O Improved flaring device for flaring the ends of pipes
CN107278175B (zh) * 2014-11-06 2019-05-10 安德尔技术波兰股份公司 改进的用于管端部扩口的扩口设备
US10702906B2 (en) 2014-11-06 2020-07-07 Andel Technology Polska Sp. Z O.O. Flaring device for flaring the ends of pipes
WO2016071806A1 (en) 2014-11-06 2016-05-12 Andel Technology Polska Sp. Z O.O. Improved flaring device for flaring the ends of pipes
ITUA20164611A1 (it) * 2016-06-23 2017-12-23 Eurotis S R L Accessorio per pressatrici elettromeccaniche e/o manuali per la flangiatura o cartellatura di tubi metallici corrugati formabili, particolarmente per tubi in acciaio inox.
WO2019109430A1 (zh) * 2017-12-08 2019-06-13 广州敏实汽车零部件有限公司 一种扩孔机

Also Published As

Publication number Publication date
ITMI910470A0 (it) 1991-02-22
IT1249243B (it) 1995-02-21
ITMI910470A1 (it) 1992-08-22

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