EP0236464A1 - Riveting tool. - Google Patents

Riveting tool.

Info

Publication number
EP0236464A1
EP0236464A1 EP86905779A EP86905779A EP0236464A1 EP 0236464 A1 EP0236464 A1 EP 0236464A1 EP 86905779 A EP86905779 A EP 86905779A EP 86905779 A EP86905779 A EP 86905779A EP 0236464 A1 EP0236464 A1 EP 0236464A1
Authority
EP
European Patent Office
Prior art keywords
piston
pressure
tool according
valve
pressure medium
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
Application number
EP86905779A
Other languages
German (de)
French (fr)
Other versions
EP0236464B1 (en
Inventor
Manfred Schwab
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.)
Maschinenbau Subotsch and Schwab GmbH
Original Assignee
MASCHINENBAU SCHWAB GmbH
SCHWAB MASCHBAU
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 MASCHINENBAU SCHWAB GmbH, SCHWAB MASCHBAU filed Critical MASCHINENBAU SCHWAB GmbH
Publication of EP0236464A1 publication Critical patent/EP0236464A1/en
Application granted granted Critical
Publication of EP0236464B1 publication Critical patent/EP0236464B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B21J15/105—Portable riveters
    • 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
    • B21J15/30—Particular elements, e.g. supports; Suspension equipment specially adapted for portable riveters
    • B21J15/32—Devices for inserting or holding rivets in position with or without feeding arrangements
    • B21J15/326—Broken-off mandrel collection
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53709—Overedge assembling means
    • Y10T29/53717—Annular work
    • Y10T29/53726—Annular work with second workpiece inside annular work one workpiece moved to shape the other
    • Y10T29/5373—Annular work with second workpiece inside annular work one workpiece moved to shape the other comprising driver for snap-off-mandrel fastener; e.g., Pop [TM] riveter
    • Y10T29/53739—Pneumatic- or fluid-actuated tool
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53709—Overedge assembling means
    • Y10T29/5377—Riveter

Definitions

  • the invention relates to a rivet setting tool for setting threaded rivet nuts or blind rivet nuts with a feed device which can be actuated for the starting process and which provides the threaded bolt or pull bolt with an axial movement and which consists of a pressure piston and a
  • FIG. 1 shows a rivet setting tool in section, in the unactuated position
  • FIG. 2 shows a rivet setting tool according to FIG. 1 in the actuated position
  • FIG. 3 shows a check valve for a rivet setting tool according to FIGS. 1 or 2.
  • a rivet setting tool which consists of a device part 100 to which a handle part 200 is molded.
  • the device part 100 has a mouthpiece 1 at its front end. Behind the mouthpiece 1 there are clamping jaws 2 which are surrounded by a conical clamping sleeve 3.
  • a guide sleeve 4 is surrounded by a compression spring 5.
  • An intermediate piece 6 is fixed with the help of a lock nut 7.
  • the entire front section of the device part 100 is surrounded by a front sleeve 8, which is fixed in the housing 101.
  • a hydraulic piston 14 is located in the rear part of the housing 101.
  • the hydraulic piston 14 is delimited on its rear side by a rear chamber 102, which is connected via a housing recess 103 to a device part channel 104 running in the device part 100.
  • a handle part channel 5 which extends in the handle part 200 and opens into a transverse channel 206 at its lower end, opens into the device part channel 104.
  • the handle hurry 200 carries a pusher 22 which is movably attached to the handle part 200 by means of a cylindrical pin 21.
  • a lever 24 is articulated on the pusher 22 with the aid of a cylinder pin 23 at one end and with the aid of a cylinder pin 25 at its other end with a valve pin 26 which is seated on a valve rod 27.
  • the valve rod 27 is provided with a valve rod channel 201 which is provided as a central bore and which is laterally at its upper end opens outwards at 202.
  • the. Compressed air into an air chamber 207 and from there into the valve rod channel 201 and exits at 202.
  • the outlet 202 of the valve rod channel 201 is aligned with the transverse channel 206 of the handle part channel 205, so that the compressed air reaches the rear chamber 102 on the hydraulic or working piston 14 via the handle part channel 206 and the device part channel 104 can.
  • the working piston in FIG. 1 is moved to the left.
  • the air flowing through the valve rod channel 201 also passes through a lower transverse channel 209 into the rear pressure chamber 210 of the pressure piston 211 and presses it downward, as seen in FIG. 1.
  • the front pressure piston chamber 212 is relieved of pressure by a ventilation channel 213.
  • the same rivet setting tool can be seen in FIG. 2, the same reference symbols referring to the same parts. However, the rivet setting tool is in a second position, in which the pusher 22 is actuated, so that the valve rod 27 is moved downward against a compression spring 38 via the lever 24.
  • the sealing ring 58 located at the lower end of the valve rod 27 is moved away from its abutment on the housing cover 59, so that the compressed air flows from the inlet chamber 207 into the front chamber 212 of the pressure piston 21, whereby a hydraulic medium flows through the
  • Pressure channel 120 moves the working piston 14 to the right in the position shown in FIG. 2, which causes the riveting process.
  • the pusher 22 is relieved.
  • the valve rod 27 is moved upward again by the compression spring 38, as a result of which the working piston 14 and the pressure piston 211 return to their position shown in FIG. 1 by closing the vent hole 217 and closing the Vent hole 213 are opened. 3, a check valve 43 is shown on an enlarged scale. If the rivet setting tool is placed on the housing underside 60, the plunger 61 protruding from the housing 60 is moved inwards and the ball located in the seat 62 is pressed against the opening 63 so that it closes it and the compressed air no longer enters the device can penetrate. In this way, not only is unnecessary waste of compressed air prevented, but also a constant outflow of the compressed air, as in the position according to FIG. 1 past the adjusting valve 110 into the suction chamber 106.

Abstract

Un outil à river des écrous filetés ou borgnes comprend un agencement d'avancement actionnable pour procéder au refoulement et imprimant un mouvement axial au boulon fileté ou au boulon tirant. Cet agencement d'avancement comprend un agencement à cylindre et à piston qui se compose d'un piston de compression et d'un piston moteur. Le rappel des pistons moteur et de compression (14, 211) se fait en déviant le milieu sous pression par la partie postérieure (102, 210) des pistons, ce qui rend superflus des ressorts de rappel. Un canal de milieu sous pression (201, 205, 104) s'étend du point d'admission (207) du milieu sous pression jusqu'à une chambre postérieure (102) en traversant la partie de manche (200). La chambre postérieure (102) est obturée d'un côté de la partie postérieure du piston moteur (14).A tool riveted with threaded or blind nuts comprises an actuatable advancement arrangement for carrying out the delivery and imparting an axial movement to the threaded bolt or the pulling bolt. This advancement arrangement includes a cylinder and piston arrangement which consists of a compression piston and a drive piston. The return of the engine and compression pistons (14, 211) is done by deflecting the pressurized medium through the rear part (102, 210) of the pistons, which makes return springs superfluous. A pressurized medium channel (201, 205, 104) extends from the inlet point (207) of the pressurized medium to a posterior chamber (102) through the sleeve portion (200). The rear chamber (102) is closed on one side of the rear part of the driving piston (14).

Description

Nietsetzwerkzeug Rivet setting tool
Die Erfindung betrifft ein Nietsetzwerkzeug zum Setzen von Gewindenietmuttern oder Blindnietmuttern mit einer für den Startvorgang betätigbaren, dem Gewindebolzen bzw. Zugbolzen eine axiale Bewegung erteilende Vorschub- einrichtung, die eine aus einem Druckkolben und einemThe invention relates to a rivet setting tool for setting threaded rivet nuts or blind rivet nuts with a feed device which can be actuated for the starting process and which provides the threaded bolt or pull bolt with an axial movement and which consists of a pressure piston and a
Arb itskolben bestehende Zylinder-Kolben-Anordnung besitzt.Arb its piston existing cylinder-piston arrangement.
Es ist bekannt, bei derartigen Geräten die Ar- beitsbewegüng von Druckkolben und Arbeitskolben durch eine außen liegende Druckluftquelle zu erzeugen und die Rück- führung der Kolben durch Federn zu erzielen. Diese erfor¬ derlichen Federn sind in verschiedener Hinsicht als nach¬ teilig anzusehen. Abgesehen davon, daß die Federkraft er¬ lahmen kann -oder die Federn selbst schadhaft werden und dann die Rückführung der Kolben nicht einwandfrei erfolgt, sind entsprechend gute Federn sehr kostenaufwendig und verursachen auch bei der Montage einen möglichst zu ver¬ meidenden Aufwand. Außerdem kann eine Feder nur eine be¬ stimmte Kraft ausüben, so daß hinsichtlich der Geschwindig¬ keit der Rückführbewegung der Kolben Grenzen gesetzt sind. Der Erfindung liegt daher die Aufgabe zugrunde, ein Nietsetzwerkzeug der eingangs genannten Art verfügbar zu machen, das mit einem geringen Montageaufwand kosten¬ günstig hergestellt werden kann und mit großer Zuverlässig¬ keit arbeitet und eine hohe Arbeitsgeschwindigkeit aufweist, Erfindungsgemäß wird das dadurch erreicht, daß die Rückführung von Druck- und Arbeitskolben unter Ver¬ meidung von Rückholfedern durch Umleitung des Druckmittels an die Kolbenrückseiten erfolgt und ein Druckmittelkanal von der Druckmitteleinlaßstelle durch den Griffteil und den Geräteteil zu einer hinteren Kammer verläuft, die an einer Seite von der Arbeitskolbenrückseite abgeschlossen wird. Die Erfindung soll nachstehend anhand von Ausfüh¬ rungsbeispielen unter Bezugnahme auf die beigefügten Zeich¬ nungen näher erläutert werden. In den Zeichnungen zeigen: Fig. 1 ein Nietsetzwerkzeug im Schnitt, in unbetätigter Stellung; Fig. 2 ein Nietsetzwerkzeug nach Fig. 1 in betätigter Stellung; und Fig. 3 ein Sperrventil für ein Nietsetzwerk¬ zeug nach den Fig. 1 oder 2.It is known in such devices to generate the working movement of the pressure piston and the working piston by means of an external compressed air source and to achieve the return of the pistons by means of springs. These necessary springs can be regarded as disadvantageous in various respects. Apart from the fact that the spring force can weaken - or the springs themselves become defective and the pistons are not returned properly, correspondingly good springs are very costly and also cause effort to be avoided during assembly. In addition, a spring can only exert a certain force, so that there are limits to the speed of the return movement of the pistons. The invention is therefore based on the object of making available a rivet setting tool of the type mentioned at the outset, which can be produced inexpensively with little assembly effort and works with great reliability and has a high operating speed. According to the invention this is achieved in that the Pressure and working pistons are returned while avoiding return springs by diverting the pressure medium to the rear of the piston and a pressure medium channel runs from the pressure medium inlet point through the handle part and the device part to a rear chamber, which is closed on one side by the rear side of the working piston. The invention will be explained in more detail below on the basis of exemplary embodiments with reference to the accompanying drawings. In the drawings: FIG. 1 shows a rivet setting tool in section, in the unactuated position; FIG. 2 shows a rivet setting tool according to FIG. 1 in the actuated position; and FIG. 3 shows a check valve for a rivet setting tool according to FIGS. 1 or 2.
In Fig. 1 ist ein Nietsetzwerkzeug dargestellt, das aus einem Geräteteil 100 besteht, an das ein Griffteil 200 angeformt ist. Das Geräteteil 100 hat an seinem vorde¬ ren Ende ein Mundstück 1. Hinter dem Mundstück 1 sind Spann- backen 2 angeordnet, die von einer konischen Spannhülse 3 umgeben sind. Eine Führungshülse 4 wird von einer Druck¬ feder 5 umgeben. Ein Zwischenstück 6 ist mit Hilfe einer Kontermutter 7 festgelegt. Der gesamte vordere Abschnitt des Geräteteils 100 wird von einer vorderen Hülse 8 umge- ben, die in dem Gehäuse 101 festgelegt ist. In dem hinteren Teil des Gehäuses 101 sitzt ein Hydraulikkolben 14. Der Hydraulikkolben 14 wird auf seiner hinteren Seite von einer hinteren Kammer 102 begrenzt, die über eine Geh useausneh¬ mung 103 mit einem im Geräteteil 100 verlaufenden Geräte- teilkanal 104 in Verbindung steht. In den Geräteteilkanal 104 mündet ein im Griffteil 200 verlaufender Griffteil¬ kanal 5 ein, der an seinem unteren Ende in einen Querkanal 206 übergeht.In Fig. 1, a rivet setting tool is shown, which consists of a device part 100 to which a handle part 200 is molded. The device part 100 has a mouthpiece 1 at its front end. Behind the mouthpiece 1 there are clamping jaws 2 which are surrounded by a conical clamping sleeve 3. A guide sleeve 4 is surrounded by a compression spring 5. An intermediate piece 6 is fixed with the help of a lock nut 7. The entire front section of the device part 100 is surrounded by a front sleeve 8, which is fixed in the housing 101. A hydraulic piston 14 is located in the rear part of the housing 101. The hydraulic piston 14 is delimited on its rear side by a rear chamber 102, which is connected via a housing recess 103 to a device part channel 104 running in the device part 100. A handle part channel 5, which extends in the handle part 200 and opens into a transverse channel 206 at its lower end, opens into the device part channel 104.
Das Griff eil 200 trägt einen Drücker 22 , der mit Hilfe eines Zylinderstiftes 21 bewegbar am Griffteil 200 befestigt ist. An dem Drücker 22 ist mit Hilfe eines Zylin¬ derstiftes 23 ein Hebel 24 an seinem einen Ende angelenkt und mit Hilfe eines Zylinderstiftes 25 an seinem anderen Ende mit einem Ventilbolzen 26 , der auf einer Ventilstange 27 sitzt. Die Ventilstange 27 ist in ihrem unteren Abschnitt mit einem als mittige Bohrung ausgestatteten Ventilstangen¬ kanal 201 versehen, der an seinem oberen Ende seitlich bei 202 nach außen öffnet.The handle hurry 200 carries a pusher 22 which is movably attached to the handle part 200 by means of a cylindrical pin 21. A lever 24 is articulated on the pusher 22 with the aid of a cylinder pin 23 at one end and with the aid of a cylinder pin 25 at its other end with a valve pin 26 which is seated on a valve rod 27. In its lower section, the valve rod 27 is provided with a valve rod channel 201 which is provided as a central bore and which is laterally at its upper end opens outwards at 202.
Über einen in der Schnittdarstellung nicht zu sehenden Lufteinlaßkanal gelangt die. Druckluft in eine Luftkammer 207 und von dort in den Ventilstangenkanal 201 und tritt bei 202 aus. In der in Fig. 1 dargestellten ersten Stellung fluchtet der Austritt 202 des Ventilstangenkanals 201 mit dem Querkanal 206 des Griffteilkanals 205 , so daß die Druckluft über den Griffteilkanal 206 und den Geräte- teilkanal 104 in die hintere Kammer 102 am Hydraulik- oder Arbeitskolben 14 gelangen kann. Dadurch wird der Arbeits¬ kolben in Fig. 1 nach links bewegt. Außerdem strömt die Luft von dem Gerätekanal 104 in Fig. 4 nach links zu einer Ausnehmung 105 im Griffteilgehäuse 101 in eine Ansaugkammer 106 und von dort über Bohrungen 107 in das Innere der Ar- beitskolbenstange 108 und dient dort zum Ansaugen des Niets, wenn nicht - je nach Ausgestaltung des Geräts - das Aufschrauben einer Gewindenietmutter vorgesehen ist. Auße.rdem steht die durch die Bohrungen 107 strömende Luft zum Entfernen der Nietstifte nach hinten durch den Kanal 109 zur Verfügung. Mit Hilfe eines Ventils 110 kann die Stärke der Luftströmung und damit die durch die Luft er¬ zeugte Kraft stufenlos eingestellt werden, indem das Ventil mit Hilfe einer Überwurfmutter 20 oder einer nicht darge¬ stellten Stellschraube entsprechend eingestellt werden kann.Via an air inlet channel not visible in the sectional view, the. Compressed air into an air chamber 207 and from there into the valve rod channel 201 and exits at 202. In the first position shown in FIG. 1, the outlet 202 of the valve rod channel 201 is aligned with the transverse channel 206 of the handle part channel 205, so that the compressed air reaches the rear chamber 102 on the hydraulic or working piston 14 via the handle part channel 206 and the device part channel 104 can. As a result, the working piston in FIG. 1 is moved to the left. In addition, the air flows from the device channel 104 in FIG. 4 to the left to a recess 105 in the handle part housing 101 into a suction chamber 106 and from there via bores 107 into the interior of the working piston rod 108 and serves there to suck in the rivet if not - depending on the design of the device - screwing a threaded rivet nut is provided. In addition, the air flowing through the bores 107 is available for removing the rivet pins to the rear through the channel 109. With the help of a valve 110, the strength of the air flow and thus the force generated by the air can be adjusted continuously by the valve being adjusted accordingly with the aid of a union nut 20 or an adjusting screw (not shown).
Die durch den Ventilstangenkanal 201 strömende Luft gelangt außerdem durch einen unteren Querkanal 209 in die hintere Druckkammer 210 des Druckkolbens 211 und drückt diesen, nach Fig. 1 gesehen, nach unten. Die vordere Druckkolbenkammer 212 ist entlastet durch einen Entlüftungs¬ kanal 213. In Fig. 2 ist das gleiche Nietsetzwerkzeug zu sehen, wobei sich gleiche Bezugszeichen auf gleiche Teile beziehen. Jedoch befindet sich das Nietsetzwerkzeug in einer zweiten Stellung, bei der der Drücker 22 betätigt ist, so daß über den Hebel 24 die Ventilstange 27 gegen eine Druckfeder 38 nach unten bewegt wird. Auf diese Weise wird eine Dichtung 36 vom Gehäuse 215 des Griffteils 200 wegbewegt, so daß der Griffteilkanal 205 über die Bohrung 216,in der die Ventilstange 27 sitzt, und einen Entlüftungs¬ kanal 217 entleert wird und damit auch die hintere Kammer 102 am Arbeitskolben 14 über den mit dem Griffteilkanal 205 in Verbindung stehenden Geräteteilkanal 104.The air flowing through the valve rod channel 201 also passes through a lower transverse channel 209 into the rear pressure chamber 210 of the pressure piston 211 and presses it downward, as seen in FIG. 1. The front pressure piston chamber 212 is relieved of pressure by a ventilation channel 213. The same rivet setting tool can be seen in FIG. 2, the same reference symbols referring to the same parts. However, the rivet setting tool is in a second position, in which the pusher 22 is actuated, so that the valve rod 27 is moved downward against a compression spring 38 via the lever 24. In this way, a seal 36 is removed from the housing 215 of the handle part 200 moved away, so that the handle part channel 205 is emptied via the bore 216, in which the valve rod 27 is seated, and a ventilation channel 217 and thus also the rear chamber 102 on the working piston 14 via the device part channel 104 connected to the handle part channel 205.
Außerdem wird der am unteren Ende der Ventilstange 27 sich befindende Dichtungsring 58 von seiner Anlage am Gehäusedeckel 59 wegbewegt, so daß die Druckluft aus der Einlaßkammer 207 in die vordere -Kammer 212 des Druckkolbens 21. fließt, wodurch ein hydraulisches Medium über denIn addition, the sealing ring 58 located at the lower end of the valve rod 27 is moved away from its abutment on the housing cover 59, so that the compressed air flows from the inlet chamber 207 into the front chamber 212 of the pressure piston 21, whereby a hydraulic medium flows through the
Druckkanal 120 den Arbeitskolben 14 in die in Fig. 2 dar¬ gestellte Stellung nach rechts bewegt, wodurch der Nietvor¬ gang bewirkt wird. Nach diesem Arbeitsgang wird der Drücker 22 entlastet.Durch die Druckfeder 38 wird die Ventilstange 27 wieder nach oben bewegt, wodurch der Arbeitskolben 14 sowie der Druckkolben 211 wieder in ihre in Fig. 1 darge¬ stellte Stellung zurückkehren, indem die Entlüftungsbohrung 217 geschlossen und die Entlüftungsbohrung 213 geöffnet werden. in Fig. 3 ist in vergrößertem Maßstab ein Sperr¬ ventil 43 dargestellt. Wird das Nietsetzwerkzeug auf die Gehäuseunterseite 60 aufgesetzt, so wird der aus dem Gehäuse 60 hervorstehende Stößel 61 nach innen bewegt und dabei die in dem Sitz 62 befindliche Kugel gegen die Öffnung 63 gedrückt, so daß sie diese verschließt und die Druckluft nicht mehr in das Gerät eindringen kann. Auf diese Weise wird nicht nur eine unnötige Verschwendung von Druckluft verhindert, sondern auch ein ständiges Ausströmen der Druck¬ luft , wie es in der Stellung nach Fig. 1 am Einstellventil 110 vorbei in die Ansaugkammer 106 ständig geschieht.Pressure channel 120 moves the working piston 14 to the right in the position shown in FIG. 2, which causes the riveting process. After this operation, the pusher 22 is relieved. The valve rod 27 is moved upward again by the compression spring 38, as a result of which the working piston 14 and the pressure piston 211 return to their position shown in FIG. 1 by closing the vent hole 217 and closing the Vent hole 213 are opened. 3, a check valve 43 is shown on an enlarged scale. If the rivet setting tool is placed on the housing underside 60, the plunger 61 protruding from the housing 60 is moved inwards and the ball located in the seat 62 is pressed against the opening 63 so that it closes it and the compressed air no longer enters the device can penetrate. In this way, not only is unnecessary waste of compressed air prevented, but also a constant outflow of the compressed air, as in the position according to FIG. 1 past the adjusting valve 110 into the suction chamber 106.
Es wäre aber unvorteilhaft, eine einmal gewünschte Druck¬ einstellung mit Hilfe der Luftstellschraube 20 ständig zu verändern, und auch viel zu aufwendig, über die Druck- luftsteuerschraube 20 das Drehventil 110 ständig zu schließen. Auf diese Art und Weise wird praktisch automa¬ tisch über den Stößel 61 die Druckluft im Gerät abgeschal¬ tet. However, it would be disadvantageous to constantly change a desired pressure setting with the aid of the air adjusting screw 20, and it would also be far too expensive to constantly close the rotary valve 110 via the compressed air control screw 20. In this way, the compressed air in the device is switched off practically automatically via the plunger 61.

Claims

Patentansprüche Claims
1. Nietsetzwerkzeug zum Setzen von Gewindeniet¬ muttern oder Blindnietmuttern mit einer für den Stauchvor¬ gang betätigbaren, dem Gewindebolzen bzw. Zugbolzen eine axiale Bewegung erteilende Vorschubeinrichtung, die eine aus einem Druckkolben und einem Arbeitskolben bestehende Zylinder-Kolben-Anordnung besitzt, dadurch ge kennzei ch ne t , daß die Rückführung von Druck- (211 ) und Arbeitskolben (14) unter Vermeidung von Rückholfedern durch Umleitung des Druckmittels an die Kolbenrückseiten (102, 210) erfolgt und ein Druckmittelkanal (201 , 205, 104) von der Druck¬ mitteleinlaßstelle (207) durch den Griffteil (200) zu einer hinteren Kammer (102) verläuft, die an einer Seite von der Rückseite des Arbeitskolbens (14) abgeschlossen ist.1. rivet setting tool for setting threaded rivet nuts or blind rivet nuts with a feed device which can be actuated for the upsetting process and which provides the threaded bolt or pull bolt with an axial movement and which has a cylinder-piston arrangement consisting of a pressure piston and a working piston, thereby characterizing ge ch ne t that the return of pressure (211) and working piston (14) while avoiding return springs by redirecting the pressure medium to the piston rear sides (102, 210) and a pressure medium channel (201, 205, 104) from the pressure medium inlet point (207) through the handle part (200) to a rear chamber (102) which is closed on one side from the rear of the working piston (14).
2. Werkzeug nach Anspruch 1 , dadurch gekennzeichnet, daß ein erster Abschnitt (201 ) des Druckmittelkanals durch die Ventilstange (27) verläuft, der in einer ersten Stellung in Verbindung zu einem zweiten Abschnitt (205) des Druckmittelkanals im Griffteil (200) steht.2. Tool according to claim 1, characterized in that a first section (201) of the pressure medium channel extends through the valve rod (27), which is in a first position in connection with a second section (205) of the pressure medium channel in the handle part (200).
3. Werkzeug nach Anspruch 2, dadurch gekennzeichnet, daß der Druckmittelkanal (201, 205, 104) in der ersten Stellung (Fig. 1 ) der Ventilstange (27) in eine hintere Druckkolbenkammer (210) öffnet, die an einer Seite von der Rückseite des Druckkolbens (211 ) abgeschlossen ist.3. Tool according to claim 2, characterized in that the pressure medium channel (201, 205, 104) in the first position (Fig. 1) of the valve rod (27) opens into a rear pressure piston chamber (210) on one side from the rear of the pressure piston (211 ) is completed.
4. Werkzeug nach einem der Ansprüche 1-3, dadurch gekennzeichnet, daß bei Betätigung des Drückers (22) und der dadurch verursachten zweiten Stellung (Fig.2) der Ventilstange (27) eine Verbindung der hinteren Druck- . kammer ( 104) und dem Druckkolben (211) mit einer Entlüf¬ tungsöffnung (217 hergestellt wird. 4. Tool according to one of claims 1-3, characterized in that upon actuation of the handle (22) and the second position caused thereby (Fig.2 ) of the valve rod (27) a connection of the rear pressure. chamber (104) and the pressure piston (211) with a vent opening (217).
5. Werkzeug nach einem der Ansprüche 1-4, dadurch gekennzeichnet, daß in dem Druckmittelkanal (104) im Geräteteil (100) ein Ventil (110) vorgesehen ist, das einen Druckluftzuführkanal (105) in einen Ringraum (106) hinter dem Einspannfutter (2) freigibt, um beim Nietvor¬ gang abgerissene Stifte durch einen Abführkanal (109) aus dem Werkzeug zu fördern.5. Tool according to one of claims 1-4, characterized in that in the pressure medium channel (104) in the device part (100) a valve (110) is provided which a compressed air supply channel (105) in an annular space (106) behind the chuck ( 2) releases in order to convey torn pins out of the tool through a discharge channel (109) during the riveting process.
6. Werkzeug nach Anspruch 5 , dadurch gekennzeichnet, daß das Ventil (110) als Drehven¬6. Tool according to claim 5, characterized in that the valve (110) as Drehven¬
10 til ausgebildet ist, welches eine stufenlose Steuerung der Förderkraft für die abgerissenen Nietstifte erlaubt.10 til is formed, which allows a continuous control of the conveying force for the torn rivet pins.
7. Werkzeug nach Anspruch 6, dadurch gekennzeichnet, daß das Drehventil zum Verstellen mit einer den Gerätekopf (8) umschließenden Überwurfmutter 15 (20) versehen ist.7. Tool according to claim 6, characterized in that the rotary valve for adjustment with a device head (8) enclosing union nut 15 (20) is provided.
8. Werkzeug nach Anspruch 6, dadurch gekennzeichnet, daß das Drehventil (110) eine Luft¬ verstellschraube (20) trägt.8. Tool according to claim 6, characterized in that the rotary valve (110) carries an Luft¬ adjusting screw (20).
9. Werkzeug nach einem der Ansprüche 1-8, 20 dadurch gekennzeichnet, daß ein Sperrventil (61 , 62, 63) automatisch die Druckluftzufuhr in Abstell-Lage des Werk¬ zeugs unterbricht.9. Tool according to one of claims 1-8, 20 characterized in that a shut-off valve (61, 62, 63) automatically interrupts the compressed air supply in the storage position of the tool.
10. Werkzeug nach Anspruch 9, dadurch gekennzeichnet, daß an der Unterseite (60) des ^° den Druckkolben (211 ) umgebenden Gehäuses ein Ventilstößel (61 ) hervorsteht.10. Tool according to claim 9, characterized in that on the underside (60) of the ^ ° surrounding the pressure piston (211) housing a valve tappet (61) protrudes.
00
5 5
EP86905779A 1985-09-14 1986-09-13 Riveting tool Expired - Lifetime EP0236464B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853532932 DE3532932A1 (en) 1985-09-14 1985-09-14 RIVETING TOOL
DE3532932 1985-09-14

Publications (2)

Publication Number Publication Date
EP0236464A1 true EP0236464A1 (en) 1987-09-16
EP0236464B1 EP0236464B1 (en) 1992-12-09

Family

ID=6281044

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86905779A Expired - Lifetime EP0236464B1 (en) 1985-09-14 1986-09-13 Riveting tool

Country Status (5)

Country Link
US (1) US4770023A (en)
EP (1) EP0236464B1 (en)
JP (1) JPH0777658B2 (en)
DE (2) DE3532932A1 (en)
WO (1) WO1987001630A1 (en)

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US5086551A (en) * 1990-09-05 1992-02-11 Emhart Inc. Rivet setting tool
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US20060150402A1 (en) * 2005-01-12 2006-07-13 Yu-Ching Lin Center position device of piston rod of riveter
JP5597432B2 (en) * 2010-04-06 2014-10-01 ポップリベット・ファスナー株式会社 Electric blind rivet fastening device
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Also Published As

Publication number Publication date
US4770023A (en) 1988-09-13
DE3532932A1 (en) 1987-03-19
WO1987001630A1 (en) 1987-03-26
EP0236464B1 (en) 1992-12-09
JPS63500926A (en) 1988-04-07
DE3687268D1 (en) 1993-01-21
JPH0777658B2 (en) 1995-08-23

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