EP1402974A2 - Nietvorrichtung für Schraubnieten - Google Patents

Nietvorrichtung für Schraubnieten Download PDF

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Publication number
EP1402974A2
EP1402974A2 EP03425610A EP03425610A EP1402974A2 EP 1402974 A2 EP1402974 A2 EP 1402974A2 EP 03425610 A EP03425610 A EP 03425610A EP 03425610 A EP03425610 A EP 03425610A EP 1402974 A2 EP1402974 A2 EP 1402974A2
Authority
EP
European Patent Office
Prior art keywords
trigger
arm
valve
activating
rivet gun
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Withdrawn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
EP03425610A
Other languages
English (en)
French (fr)
Other versions
EP1402974A3 (de
Inventor
Giacomo Generali
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.)
Far Srl
Original Assignee
Far 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 Far Srl filed Critical Far Srl
Publication of EP1402974A2 publication Critical patent/EP1402974A2/de
Publication of EP1402974A3 publication Critical patent/EP1402974A3/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/0007—Tools for fixing internally screw-threaded tubular fasteners
    • B25B27/0014—Tools for fixing internally screw-threaded tubular fasteners motor-driven
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/16—Drives for riveting machines; Transmission means therefor
    • B21J15/22—Drives for riveting machines; Transmission means therefor operated by both hydraulic or liquid pressure and gas pressure

Definitions

  • the present invention relates to a rivet gun for threaded rivets.
  • the rod of the hydraulic cylinder is attached to a holding unit for a threaded rivet or insert.
  • the holding unit comprises a rod or tie rod with a threaded end, onto which the rivet can be screwed.
  • the rivet locking operation occurs as described below.
  • the handle of the gun is fitted with a rocker arm trigger, which can be used to perform two separate operations one after another.
  • the trigger when the operator squeezes its first arm, the trigger performs a first oscillation starting from a central balanced position, opening a first valve, which, by means of the pneumatic cylinder, moves the hydraulic cylinder piston opposing the action of a return spring.
  • the operator squeezes the second arm of the rocker arm, and the trigger, performing a second oscillation opposite to the previous one, opens a second valve which activates a pneumatic motor that causes the holding unit threaded rod to rotate in the direction opposite to that in which the rivet was screwed onto it. In this way, the threaded rod is disengaged from the rivet previously clinched.
  • the aim of the present invention is to provide a gun for threaded rivets which can overcome the disadvantage described with reference to prior art, and therefore exceed the operating speed of guns of the type described with simplified operation.
  • the numeral 1 denotes as a whole a rivet gun for threaded rivets or inserts 2 which have internal threading 2a, a portion 2b which can be deformed by traction and a contact collar 2c.
  • the rivet gun 1 comprises an elongated grip 3, whose longitudinal axis is labelled 4.
  • an integral substantially cylindrical body 5 whose longitudinal axis, labelled 6, is substantially transversal to the axis 4 of the grip 3.
  • the inside of the body 5 forms a cylindrical chamber 5a in which there slides along the axis 6 a piston 7 attached to a rod 8 whose free end projecting from the body 5 is attached to a rivet 2 holding unit 9 comprising a threaded portion 10 designed to connect to the threading 2a on the rivet 2.
  • the rod 8 and the holding unit 9 move not only along the axis 6 but also rotate about the axis 6, driven by a pneumatic motor 11 located in the body 5 and kinematically connected to the rod 8.
  • the free end of the grip 3, labelled 12 as a whole, is substantially cylindrical, closed by a base wall 13. Inside it there is a cylindrical compartment 14, separated by a piston 15 into a first chamber 16, located between the piston 15 and the base wall 13, and a second chamber 17, located between the piston 15 and an end wall, labelled 18, which is substantially parallel with the wall 13.
  • cylindrical compartment 14 and the piston 15 together form a pneumatic cylinder 19 which drives the piston 7 which, together with the cylindrical chamber 5a, forms a hydraulic cylinder 20.
  • the hydraulic cylinder 20 is activated following the piston 15 stroke along the axis 4 away from the wall 13 and towards the wall 18.
  • a rod 21 integral with the piston 15 consequently slides inside a cylindrical chamber 22 coaxial with the cylindrical compartment 14, made inside the grip 3 and holding pressurised oil which, following the rod 22 stroke, is pushed through a hole 23 into the cylindrical chamber 5a, pushing the piston 7 along the axis 6 and away from the holding unit 9, against the opposing action of a helical spring 24.
  • the first and second control means 25 and 26 consist of a first and, respectively, a second valve 27 and 28 which open and close to allow the passage of a control fluid from a supply fluid source, schematically illustrated with a block 29.
  • both of the valves 27 and 28 are inserted in respective seats 30 and 31 on the grip 3 with axes labelled A and B substantially parallel with the axis 6 and, together with the axis 6, forming a plane radial to the cylindrical body 5, the second valve 28 being inserted between the first valve 27 and the hydraulic cylinder 20.
  • the two valves 27 and 28 respectively comprise containment bodies 32 and 33 with respective collars 34 and 35 for axial locking of the bodies 32 and 33 in contact with a flat surface 36 on the grip 3, and respective control stems 37 and 38, coaxial to the axes A and B.
  • the stem 37 is mobile between a first position in which it projects by a predetermined section beyond the collar 34 at which, as is known, it closes the connecting pipes, not illustrated, between the source 29 and the chamber 16 of the pneumatic cylinder 19, and a second, retracted position, in which, as is known, it opens the above-mentioned connecting pipes.
  • the stem 38 is mobile between a first position, in which it projects by a predetermined section beyond the collar 35 at which, as is known, it closes the connecting pipe, schematically illustrated with a line 39 in Figure 1, between the source 29 and the pneumatic motor 11, and a second, retracted position, in which, as is known, it opens the connecting pipe 39.
  • a control trigger 42 is pivoted, mobile about the pin 40, according to an inward or traction and a return movement, towards and away from the flat surface 36, during which it can successively activate the first and second control valves 27 and 28.
  • the trigger 42 is box-shaped, having a cavity 43 facing the flat surface 36, housing first and second means 44 and 45 for successive activation of the first and second valves 27 and 28.
  • the first means 44 consist of a rocker arm 46 mounted on a pin 47 parallel with the pin 40 and connecting the two opposite side walls 48 of the trigger 42, whilst the second means 45 consist of a lever 49 pivoting on the pin 40.
  • the rocker arm 46 comprises a first, L-shaped arm 50 whose free end 51 activates the stem 37 of the first valve 27, and a second arm 52 which activates the lever 49 and is inserted between the base 53 of the trigger 42 cavity 43 and the free end 54 of the lever 49.
  • the lever 49 is inserted with its free end 54 between the second arm 52 and a counteractive spring 55 inserted in a seat 56 between the seats 30 and 31 and activates the stem 38 of the second valve 28.
  • the operator starts activating the trigger 42 which is performing the operation described above in the home position, illustrated in Figure 2, for detachment from a first wall 61 forming the surface 36 of the handle 3 and in which the first and second valves 27 and 28, still closed, have the respective stems 37 and 38 projecting from the bodies 32 and 33.
  • the trigger 42 When pulled, the trigger 42 rotates about the pin 40 and during a first part of its angular travel, illustrated in Figure 3, brings the free end 51 of the rocker arm into contact with the end of the stem 37 of the valve 27, in contact with a handle 3 second contact wall 62 formed by the valve 27 locking collar 34, the stem 37 consequently sliding along its axis A and opening the valve 27.
  • the source 29 is connected to the first chamber 16 and the piston 15 slides along the cylindrical compartment 14, causing the rod 21 to slide in the cylindrical chamber 22, resulting in the passage of the oil through the hole 23 into the chamber 5a and movement of the piston 7 in the direction F1 which pulls the rod 8, deforming the portion 2b of the insert 2 as illustrated in Figure 6.
  • the trigger performs a second part of its angular travel, reaching a final position in which it is in contact with the handle 3 first contact wall 61.
  • the rocker arm 46 subject to the reaction of the second contact wall 62 rotates about the pin 47, clockwise as seen in Figures 2 to 4, overcoming the resistance of the spring 55 and moving its second arm 52 away from the base 53 of the trigger 42.
  • the rocker arm 46 moves to a second configuration, illustrated in Figure 4, in which it frees the valve 27 stem 37 from its first arm 50, simultaneously pushing the lever 49 with the end of its second arm 52.
  • the lever 49 rotates anti-clockwise about the pin 40 towards a position in which it makes contact with the end of the valve 28 stem 38, opening the valve and so, as is known, opening the pipe 39 connecting the source 29 to the pneumatic motor 11 which rotates the holding unit 9 in such a way as to unscrew the threaded portion 10 of the rod 8 from the threading 2a on the insert 2.
  • valve 28 supplies the control fluid to the first valve 27 to restore it to the closed condition in which the stem 37 returns to the condition illustrated in Figures 4 and 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Nozzles (AREA)
EP03425610A 2002-09-30 2003-09-19 Nietvorrichtung für Schraubnieten Withdrawn EP1402974A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBO20020619 ITBO20020619A1 (it) 2002-09-30 2002-09-30 Pistola rivettatrice per rivetti filettati
ITBO20020619 2002-09-30

Publications (2)

Publication Number Publication Date
EP1402974A2 true EP1402974A2 (de) 2004-03-31
EP1402974A3 EP1402974A3 (de) 2004-06-09

Family

ID=31972189

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03425610A Withdrawn EP1402974A3 (de) 2002-09-30 2003-09-19 Nietvorrichtung für Schraubnieten

Country Status (2)

Country Link
EP (1) EP1402974A3 (de)
IT (1) ITBO20020619A1 (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007090681A3 (de) * 2006-02-12 2007-11-08 Wuerth Adolf Gmbh & Co Kg Blindniet und vorrichtung hierfür
EP1882860A1 (de) * 2006-07-25 2008-01-30 Ateliers de la Haute -Garonne ETS Auriol et Cie Verfahren zur strukturellen Befestigung mit einem Blindniet, Blindniet, der die Umsetzung des Verfahrens ermöglicht, und Setzwerkzeug, das für einen solchen Niet geeignet ist
CN101384827B (zh) * 2006-02-12 2013-01-02 伍尔特国际股份公司 射击铆钉
US8496419B2 (en) 2007-08-20 2013-07-30 Wuerth International Ag Blind rivet
US8707539B2 (en) 2006-02-12 2014-04-29 Wurth International Ag Gun rivet
CN105263678A (zh) * 2013-06-04 2016-01-20 Vvg彼菲斯蒂冈斯技术两合公司 铆接设备
ITUB20150545A1 (it) * 2015-03-11 2016-09-11 Ober S P A Sistema per l'accoppiamento/disaccoppiamento di un tirante filettato con/da una sede porta-tirante in una pistola per la deformazione di elementi di fissaggio, e pistola ottenuta con tale sistema
US10022782B1 (en) 2017-01-13 2018-07-17 Milawukee Electric Tool Corporation Attachment for a rivet setting tool
CN109476003A (zh) * 2016-06-16 2019-03-15 博尔霍夫.奥塔陆股份有限公司 用于待被压接的元件的快速释放安装工具

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3555649A (en) * 1968-10-07 1971-01-19 Aerpat Ag Adaptor for pneumatically operated pulling tool
US4571976A (en) * 1984-01-13 1986-02-25 Alfred Honsel Nieten- Und Metallwarenfabrik Gmbh & Co. Blind riveting apparatus for rivets of different sizes
EP0787563A1 (de) * 1996-01-31 1997-08-06 FAR S.r.l. Hydropneumatisches Nietwerkzeug
DE19826157A1 (de) * 1998-06-12 1999-12-23 Wirth Maschinenbau Gmbh Vorrichtung zur Herstellung einer Nietverbindung und zugehöriger Niet

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3555649A (en) * 1968-10-07 1971-01-19 Aerpat Ag Adaptor for pneumatically operated pulling tool
US4571976A (en) * 1984-01-13 1986-02-25 Alfred Honsel Nieten- Und Metallwarenfabrik Gmbh & Co. Blind riveting apparatus for rivets of different sizes
EP0787563A1 (de) * 1996-01-31 1997-08-06 FAR S.r.l. Hydropneumatisches Nietwerkzeug
DE19826157A1 (de) * 1998-06-12 1999-12-23 Wirth Maschinenbau Gmbh Vorrichtung zur Herstellung einer Nietverbindung und zugehöriger Niet

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007090681A3 (de) * 2006-02-12 2007-11-08 Wuerth Adolf Gmbh & Co Kg Blindniet und vorrichtung hierfür
US8286324B2 (en) 2006-02-12 2012-10-16 Adolf Wuerth Gmbh & Co. Kg Blind rivet and associated device
CN101384827B (zh) * 2006-02-12 2013-01-02 伍尔特国际股份公司 射击铆钉
US8707539B2 (en) 2006-02-12 2014-04-29 Wurth International Ag Gun rivet
EP1882860A1 (de) * 2006-07-25 2008-01-30 Ateliers de la Haute -Garonne ETS Auriol et Cie Verfahren zur strukturellen Befestigung mit einem Blindniet, Blindniet, der die Umsetzung des Verfahrens ermöglicht, und Setzwerkzeug, das für einen solchen Niet geeignet ist
US8496419B2 (en) 2007-08-20 2013-07-30 Wuerth International Ag Blind rivet
CN105263678A (zh) * 2013-06-04 2016-01-20 Vvg彼菲斯蒂冈斯技术两合公司 铆接设备
US10112232B2 (en) 2013-06-04 2018-10-30 VVG-Befestigungstechnik GmbH & Co. KG Riveting device
ITUB20150545A1 (it) * 2015-03-11 2016-09-11 Ober S P A Sistema per l'accoppiamento/disaccoppiamento di un tirante filettato con/da una sede porta-tirante in una pistola per la deformazione di elementi di fissaggio, e pistola ottenuta con tale sistema
EP3067157A1 (de) * 2015-03-11 2016-09-14 OBER S.p.A. System zur kopplung/entkopplung einer gewindezugstange zu/von einem zugstangensitz in eine pistole zum verformen von befestigungselementen, sowie eine pistole mit diesem system
CN109476003A (zh) * 2016-06-16 2019-03-15 博尔霍夫.奥塔陆股份有限公司 用于待被压接的元件的快速释放安装工具
US10022782B1 (en) 2017-01-13 2018-07-17 Milawukee Electric Tool Corporation Attachment for a rivet setting tool

Also Published As

Publication number Publication date
EP1402974A3 (de) 2004-06-09
ITBO20020619A1 (it) 2004-04-01

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