EP0065110B1 - Outil pour poser des rivets borgnes - Google Patents

Outil pour poser des rivets borgnes Download PDF

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Publication number
EP0065110B1
EP0065110B1 EP82103251A EP82103251A EP0065110B1 EP 0065110 B1 EP0065110 B1 EP 0065110B1 EP 82103251 A EP82103251 A EP 82103251A EP 82103251 A EP82103251 A EP 82103251A EP 0065110 B1 EP0065110 B1 EP 0065110B1
Authority
EP
European Patent Office
Prior art keywords
jaw
support
piston
clamping jaws
rivet
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
Application number
EP82103251A
Other languages
German (de)
English (en)
Other versions
EP0065110A1 (fr
Inventor
Rudolf Wasser
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.)
Marto AG
Original Assignee
Marto AG
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 Marto AG filed Critical Marto AG
Priority to AT82103251T priority Critical patent/ATE14687T1/de
Publication of EP0065110A1 publication Critical patent/EP0065110A1/fr
Application granted granted Critical
Publication of EP0065110B1 publication Critical patent/EP0065110B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • B21J15/02—Riveting procedures
    • B21J15/04—Riveting hollow rivets mechanically
    • B21J15/043—Riveting hollow rivets mechanically by pulling a mandrel

Definitions

  • the invention relates to a blind riveting device according to the preamble of claim 1.
  • a blind riveting device is known from DE-AS 1 627 426.
  • blind riveting devices of this type the hollow rivet provided at its end with a rivet head and enclosing the shaft of the rivet pin is inserted into aligned holes in the parts to be connected, usually made of sheet metal; then, by means of the device resting on the rivet head with its support, the rivet pin is pulled, the upsetting head of which widens the other end of the hollow rivet and deforms it into a second rivet head.
  • the rivet pin together with the compression head can be pulled out of the hollow rivet.
  • the shaft of the rivet pin is provided with a predetermined breaking point, so that part of the rivet pin remains in the hollow rivet and at the end of the operation there is only a stub of the shaft of the rivet pin between the clamping jaws.
  • the rivet pin carried or held by the clamping jaws or its stub must be removed in order to allow the insertion of the rivet pin of a further blind rivet between the clamping jaws.
  • the present invention has for its object to provide a blind riveting device in which the condition required for the insertion of a new blind rivet is given after completion of a riveting process without manual intervention. In the broadest sense, this means that the device parts assume their starting position; in the narrower sense, the rivet pin carried by the clamping jaws or the stub of this pin should also be ejected. This object is achieved with the features stated in the characterizing part of claim 1.
  • the housing of the electric drive motor has a cylindrical extension 1, in which a cylindrical sleeve 2 of the support, which is denoted overall by 3, is guided so as to be longitudinally displaceable. Under the action of a spring 4, the sleeve 2 is supported at 5 with its deposition on a shoulder of the extension 1.
  • the support 3 has a support head 14 in the form of a hollow cone, which is firmly connected to the sleeve 2.
  • the front end of the support head 14 is formed by a guide piece 6 designed in the manner of a cap screw with an axially extending guide channel 7. The latter serves to receive the rivet pin 32, the shaft 33 of which is inserted into the channel 7 from the front and has a predetermined breaking point at 34.
  • the guide piece 6 is preferably made of magnetic material to give the blind rivet a temporary hold.
  • the cylindrical shaft 8 of an overall drawing piston 9 is guided.
  • This has a conical piston head 10, which in the drawn starting position of the drawing piston 9 according to FIG. 1 under the action of a spring 11 on the.
  • Inner wall of the support head 14 rests, the drawing piston 9 being supported on the support 3.
  • a spring chamber 12 extends through the piston head 10 and ends in the direction of the channel 7 at 13 in an inner cone.
  • clamping jaws 15 are arranged, which together form an extension of the channel 7 and act on the shaft 33 of the rivet pin 32 under the action of a spring 16 and the cone 13 located in the spring chamber.
  • the clamping jaws 15 are supported on the guide piece 6, whereby they are pushed back somewhat against the action of the spring 16, so that the shaft of the rivet pin is not held by the jaws 15.
  • the contact surfaces of the clamping jaws 15 with the guide piece 6 can be concave / convex, so that the clamping jaws can be pushed apart not only axially, but also radially apart. Thanks to these precautions, the shaft of the rivet pin can be inserted without further ado, but also - as will be explained later - can be easily pulled out or thrown out, namely after the magnetic holding force has been overcome.
  • radial bores 17 play a role, which connect the spring chamber 12, which is sealed at its rear end by a screw 18, to the cavity 19 (see also FIG. 3) which lies in front of the drawing piston 9 when it is withdrawn from its starting position.
  • the drawing piston 9 has an axial bore 19 ', in which a slide 20 is guided, which is located at the end of a threaded spindle 21.
  • the thread 22 starts at a distance from the slide piece 20 and extends up to an inclined shoulder 23.
  • a threaded nut segment 24 provided with a corresponding internal thread is located in a radially displaceable manner in an inner bore 25 of the shaft 8 of the drawing piston 9.
  • segment 24 comes into the region of this extension, it can be displaced radially outward to such an extent that it disengages from the thread of the spindle 21.
  • the longitudinal displaceability of the sleeve 2 is limited by interacting stops 29 and 30 of the support on the one hand and the extension 1 on the other.
  • a wedge arrangement indicated at 31 enables the sleeve 2 or the drawing piston 9 to be displaced, but ensures that these parts cannot start to rotate.
  • a further wedge arrangement 35 prevents the nut segment 24 from rotating about its own axis without preventing its radial displacement.
  • the shaft 33 of the rivet pin 32 is first inserted into the guide channel 7 of the guide piece 6 and then the hollow rivet 37 through holes which are aligned with one another Inserted sheet metal parts 38 and 39 until the rivet head 40 is pressed against the sheet metal part 39 by the guide part 6.
  • the sleeve 2 of the support 3 is pushed into the extension 1 as far as the stops 29 and 30 allow.
  • the thread segment 24 of the support 3 comes into engagement - as can be seen in FIG.
  • the spindle 21 is equipped with a saw tooth thread, the thread flanks which are essentially perpendicular to the axis facing the drive motor, so that no or no significant radial force component acts on the segment 24.
  • the spring 11 can push the drawing piston 9 back into the support 3 until the piston head 10 rests on the support head 14.
  • the tool will hardly continue to be pressed against the sheet metal parts 38/39, especially since the spring 4 tries to push the sleeve 2 of the support out of the extension 1.
  • the support thus reaches its starting position shown in FIG. 1 before the drawing piston 9 is uncoupled from the spindle 21 under the action of the inclined surface 23. This leads to a further increase in the cavity 19 which arises in front of the piston head 10 of the drawing piston when it is withdrawn.
  • the blind rivet is set in the manner described above and the rest of the rivet pin or the rivet pin is ejected after the riveting process.
  • the extension 28 ends in an inclined shoulder 43, the threaded segment 24 having a corresponding bevel 25.
  • the threaded segment is pushed back into its locking position determined by the ball 26 when the drawing piston 9 is returned to its starting position by the spring 11.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Insertion Pins And Rivets (AREA)
  • Adornments (AREA)
  • Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
  • Dowels (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Claims (6)

1. Outil pour poser des rivets borgnes, comprenant un support (3) reposant sur le rivet creux (37), ainsi qu'un organe de traction (9) qui, venant en prise au moyen de mâchoires automatiques de serrage (15) avec le rivet à pointeau (32) muni d'une tête refoulée (41), peut être rappelé par traction à l'écart de sa position initiale dans laquelle il prend appui contre le support (3), un dispositif de traction (21) et un dispositif de rappel (11) pour l'organe de traction (9) étant prévus, les mâchoires de serrage (15) portant contre une butée (6) dans la position initiale de l'organe de traction (9), en étant alors repoussées à l'écart de leur position efficace, caractérisé par le fait qu'une chambre de refoulement (19) d'un piston (9) accouplé à l'organe de traction (9) communique avec une chambre (12) prévue à la. face postérieure des mâchoires de serrage (15), la chambre de refoulement (19) et la chambre d'expulsion (12) étant réalisées de-façon qu'il se forme dans lesdites chambres, lors du rappel de l'organe de traction (9), un coussin d'air fortement comprimé qui propulse la tige (33) du rivet vers l'extérieur lorsque les mâchoires de serrage (15) deviennent inefficaces.
2. Outil pour poser des rivets borgnes selon la revendication 1, caractérisé par le fait que l'organe de traction (9) est réalisé sous la forme d'un piston mobile dans un trou (19) du support (3), et présentant une jonction (17) de sa face frontale jusqu'à la chambre (19) logeant les mâchoires de serrage (15).
3. Outil pour poser des rivets borgnes selon la revendication 2, caractérisé par le fait que le support (3) comporte une douille (2) dans laquelle le piston de traction (9) est disposé et qui, à son tour, peut être amenée dans la direction de la traction à une position de butée à l'encontre de l'action d'un ressort de rappel (4), le piston de traction (9) pouvant être accouplé par un coulissement du support (3) à son entraînement (21) en traction, et des moyens (23) étant prévus pour désaccoupler le piston de traction (9) à la fin de la course de traction et pour rappeler ce piston à sa position de départ.
4. Outil pour poser des rivets borgnes selon la revendication 3, caractérisé par le fait que le piston de traction présente un tronçon taraudé (24) guidé à mouvements radiaux, qui prend appui contre la paroi de la douille (2) dans la position intiale du piston de traction (9), se trouve à. distance devant une broche filetée (21) et peut être mis en prise avec cette dernière par un coulissement du support (3), la douille (2) comportant un évasement (28) qui, dans la position de butée dudit support (3), se trouve dans la région d'un épaulement oblique (23) de la broche (21) se raccordant au filetage (22).
5. Outil pour poser des rivets borgnes selon la revendication 4, caractérisé par le fait que le piston de traction (9) comporte un ressort de rappel (11), et par le fait que l'évasement (28) possède une transition oblique (43) vers le perçage de la douille (2).
6. Outil pour poser des rivets borgnes selon l'une des revendication's 1 à 5, caractérisé par le fait qu'une partie de guidage (6) en un matériau magnétique est montée en amont des mâchoires de serrage (15).
EP82103251A 1981-05-15 1982-04-17 Outil pour poser des rivets borgnes Expired EP0065110B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82103251T ATE14687T1 (de) 1981-05-15 1982-04-17 Blindnietgeraet.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3185/81A CH650708A5 (de) 1981-05-15 1981-05-15 Blindnietgeraet.
CH3185/81 1981-05-15

Publications (2)

Publication Number Publication Date
EP0065110A1 EP0065110A1 (fr) 1982-11-24
EP0065110B1 true EP0065110B1 (fr) 1985-08-07

Family

ID=4250471

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82103251A Expired EP0065110B1 (fr) 1981-05-15 1982-04-17 Outil pour poser des rivets borgnes

Country Status (5)

Country Link
EP (1) EP0065110B1 (fr)
AT (1) ATE14687T1 (fr)
CH (1) CH650708A5 (fr)
DE (1) DE3265187D1 (fr)
ES (1) ES512179A0 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4815193A (en) * 1988-02-22 1989-03-28 Cherry Division Of Textron, Inc. Rivet installation tool and method of installing rivets
US5471729A (en) * 1991-07-16 1995-12-05 Zoltaszek; Zenon Riveting apparatus
DE102020216479A1 (de) 2020-12-22 2022-06-23 Robert Bosch Gesellschaft mit beschränkter Haftung Rückstellvorrichtung für eine Nietwerkzeugmaschine oder eine Nietaufsatzvorrichtung, Nietwerkzeugmaschine mit der Rückstellvorrichtung und Nietaufsatzvorrichtung mit der Rückstellvorrichtung
CN113477872B (zh) * 2021-08-12 2022-07-08 宁波捷豹集团股份有限公司 一种旋铆机

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL244173A (fr) * 1958-10-09 1900-01-01
DE1627426B1 (de) * 1967-04-26 1970-10-29 Helfer & Co Kg Nietwerkzeug für Dorn-Blindniete
US3626745A (en) * 1969-12-01 1971-12-14 Richline Co Inc The Rivet gun accessory
US3774437A (en) * 1972-03-02 1973-11-27 D Young Rivet setting apparatus with axially movable collar
US4010630A (en) * 1976-04-08 1977-03-08 Textron, Inc. Hydraulic actuated power tool

Also Published As

Publication number Publication date
DE3265187D1 (en) 1985-09-12
ATE14687T1 (de) 1985-08-15
CH650708A5 (de) 1985-08-15
ES8305229A1 (es) 1983-04-01
ES512179A0 (es) 1983-04-01
EP0065110A1 (fr) 1982-11-24

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