EP0599157A1 - Powder-actuated bolt driving tool - Google Patents

Powder-actuated bolt driving tool Download PDF

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Publication number
EP0599157A1
EP0599157A1 EP93118363A EP93118363A EP0599157A1 EP 0599157 A1 EP0599157 A1 EP 0599157A1 EP 93118363 A EP93118363 A EP 93118363A EP 93118363 A EP93118363 A EP 93118363A EP 0599157 A1 EP0599157 A1 EP 0599157A1
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EP
European Patent Office
Prior art keywords
barrel
pawl
piston
slot
bore
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
EP93118363A
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German (de)
French (fr)
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EP0599157B1 (en
Inventor
Rogowski Dipl.-Ing. Zbigniew
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BETO-TORNADO GMBH
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Beto-Tornado GmbH
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Publication of EP0599157A1 publication Critical patent/EP0599157A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00—Hand-held nailing tools; Nail feeding devices
    • B25C1/08—Hand-held nailing tools; Nail feeding devices operated by combustion pressure
    • B25C1/10—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge
    • B25C1/14—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge acting on an intermediate plunger or anvil

Definitions

  • the invention relates to a powder-operated bolt-actuating device with a housing in which a barrel which is axially displaceable between a fully extended and an inserted position and which is delimited on the side facing away from the muzzle side by a tread is mounted in a barrel guide bore, which barrel furthermore has a barrel sleeve on the muzzle side and the barrel one a piston having a piston head, the barrel sleeve surrounding the barrel on the muzzle side, an insert is provided, the piston is guided through the barrel and the insert and the barrel sleeve is axially displaceable to a limited extent with respect to the barrel, with a through a between the piston head and the barrel floor Adjustment device variable combustion chamber is located, a pawl spring-biased into the barrel guide bore is provided, the piston is provided with a shoulder for engaging the pawl and the barrel is provided with a slot for the pawl to pass through.
  • Such a powder-operated bolt setting device is known from DE-B-1 911 008.
  • a radially movable, corresponding spring-loaded pawl the head of which can be rotated to adjust the combustion chamber, is provided in order to change the power of the device by changing the size of the combustion chamber, for which purpose the essentially pin-shaped pawl engages in the combustion chamber.
  • this is disadvantageous because the combustion chamber is not completely closed and therefore tends to leak. Deposits can also form in the combustion chamber.
  • a bolt setting device in which a pawl is provided in the form of a radially spring-loaded and displaceable pin, which is arranged on a support which is axially adjustable in order to change the combustion chamber.
  • the piston is provided with a circumferential groove which becomes deeper towards the mouth of the barrel, the end of the pin-shaped locking pawl engaging therewith being correspondingly chamfered.
  • the object of the invention is to provide a powder-operated bolt-actuating device of the type mentioned, in which a change in output can be undertaken with the combustion chamber closed, without deposits forming in it.
  • the adjusting device comprises an axially adjustable support which carries the pawl which can be pivoted into the barrel guide bore and which is spring-biased on the one hand into an essentially axially aligned position and on the other hand at its mouth end facing away into the barrel guide bore biased leaf spring carries, the barrel has a rear-facing slot, which is open on the mouth side towards the barrel bore, for driving over the pawl and pivoting the same when grasping the leaf spring, the barrel sleeve receives the insert and a housing-fixed driver is arranged such that it the piston head is moved to the running floor by pulling the barrel into the fully extended position.
  • the piston received by it is moved to its end position on the barrel floor with respect to the barrel, i.e. moved along the combustion chamber, whereby any adhering residues are released from the previous shot so that they can be blown out on the next shot.
  • the piston is then caught in a position determining the size of the combustion chamber by means of a pawl axially arranged in an externally adjustable position, while the barrel is further shifted into its end position limited by a stop (cartridge band guide) .
  • a stop carrier band guide
  • Fig. 1 shows a section of the barrel-side part of a powder-operated bolt gun in its collapsed position in section.
  • FIG. 2 shows a section of FIG. 1 with the bolt-setting tool pulled apart.
  • the powder-operated bolt-actuating device shown in detail comprises a housing 1, which receives a barrel guide sleeve 2, the barrel guide bore 3 of which receives a barrel 4 in an axially displaceable manner.
  • the barrel 4 carries a cartridge bearing at its end facing away from the mouth 5 and has a section 4 ′ with a reduced diameter on the mouth side, which extends approximately to the middle of the barrel 4.
  • the barrel guide bore 3 also receives a barrel sleeve 6 up to a stop 7 on the mouth side.
  • the running sleeve 6 encompasses the section 4 'of the barrel 4 and has an inner shoulder 8 on which an insert 9, which is received by the running sleeve 6 and extends out of the running sleeve 6 on the muzzle side, is supported.
  • the insert 9 can be removed from the barrel sleeve 6 from the side facing away from the mouth and is supported by the mouth-side end face of the barrel 4 when the device is pushed together.
  • a piston 10 is arranged in the barrel bore 4 ′′ of the barrel 4, with its piston head 10 ′ in the barrel bore 4 ′′ and also on the mouth side in the insert 9 and is ignited by a cartridge bearing 5, for example via a cartridge belt 11 Cartridge 12 set in motion to insert a bolt inserted into insert 9.
  • the cartridge band 11 is guided over a slot 13 of a guide 15 receiving the cartridge bearing 5 before a shot and axially guiding an ignition needle 14.
  • the barrel 4 has in the area of the section 4 'flats 16 which extend axially over a predetermined length, while the barrel sleeve 6 carries wedges 17 which extend in the area of the flats 16 and the stroke of the barrel 6 relative to the barrel 4 Limit the mouth side.
  • the barrel sleeve 6 carries a driver 18 screwed in from the outside, which engages through an axial slot 19 of the barrel 4, which is open to the barrel bore 4 '', so far that it engages with a collar when the barrel 4 is completely pulled out by means of the barrel sleeve 6 10 ′′ of the piston head 10 ′ provided with a piston sealing ring displaces the piston 10 until its piston head 10 ′ reaches the frustoconical tread 20 having a central combustion gas passage opening in the vicinity of the cartridge bearing 5 (which would correspond to a combustion chamber of minimal size, ie maximum output).
  • the piston 10 has a circumferential, an inlet slope having groove 21 which cooperates with an adjusting device 22 for the performance of the bolt-actuating device.
  • the size of the combustion chamber 23 located between the piston head 10 ′ and the running floor 20 is set via the adjusting device 22.
  • the adjusting device 22 comprises a pawl 24, which can fall into the groove 21 and is rotatably mounted with its axis 25 in a support 26, which in turn is slidably arranged in a recess 27 of the housing 1 and the barrel sleeve 6.
  • the support 26 has an outwardly projecting threaded pin 28, which projects through an axial slot 29 of a tab 30 fastened to the housing 1 to cover the recess 27 and to guide the adjusting device 22, and a nut 31 for fixing the support 26 in a desired position in with respect to the slot 29 and thus with respect to the recess 27.
  • the pawl 24 is biased by a (relatively weak) spiral spring 32 which engages on this axis or on its axis and is fixed on the support 26 (FIG. 3), in which the pawl 24 has its free end directed towards the mouth side of the bolt-actuating device in this way is that the barrel 4, when moved from its forward extended position to the rear position, can pass over the pawl 24 because the barrel 4 has an axially extending slot 33 which opens at its rear.
  • the rear slot 33 which is arranged opposite the open axial slot 19 which allows the passage of the driver 18, is also open on the mouth side towards the bore 4 '', so that the pawl 24 can engage with the groove 21 through the slot 33 , wherein the corresponding pivoting of the pawl 24 is effected in that a leaf spring 34 attached to the pawl 24 and projecting into the barrel guide bore 3 in the extended state of the barrel 4 is carried along from the rear of the barrel 2 when it is inserted from the extended position and into the Slot 33 is pressed, whereby the leaf spring 34 biases the pawl 24 in the direction of the piston 10.
  • the force exerted by the leaf spring 34 on the pawl 24 is therefore greater than that of the spiral spring 32.
  • the axial length of the slot 33 is dimensioned such that the groove 21 is located at the mouth on the mouth side at such a distance from the piston head 10 'that the piston head 10' is still completely surrounded by the barrel 4 and not in the region of the combustion chamber 23 Passage from the slot 33 to the bore 4 '' protrudes.
  • the axial length over which the slot 33 is open to the barrel bore 4 ′′ corresponds to the length that is required to hold the piston 4 in place to set an intended minimum and maximum combustion chamber by correspondingly adjusting the pawl 34 relative to the barrel 4 can.
  • the slot 33 is advantageously offset by 180 ° relative to the axial slot 19.
  • any other suitable locking device for the setting device 22 can also be used.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Fertilizing (AREA)
  • Catching Or Destruction (AREA)
  • Press Drives And Press Lines (AREA)
  • Automatic Assembly (AREA)

Abstract

The invention relates to a powder-actuated bolt driving tool which is adjustable in its power and has an adjusting device (22) for altering the combustion chamber (23), which adjusting device comprises a support (26), adjustable axially in the barrel direction and bearing a retaining pawl (24) which is capable of pivoting into the barrel guide bore (3), which retaining pawl on the one hand is spring-biased into a substantially axially aligned position and on the other hand bears, at its end remote from the muzzle, a leaf spring (34) biased into the barrel guide bore (3), the barrel (4) having a slot (33), opening out at the rear, for travelling over the retaining pawl (24) and inward-directed pivoting of the same upon seizing the leaf spring (34), which slot is open on the muzzle side towards the barrel bore (4''), and the plunger (10) being provided with a groove (21) for the latching of the retaining pawl (24), and a driver (18) fixed to the housing being arranged in such a way that it displaces the plunger head (10') up to the barrel end (20) by drawing out the barrel (4) into the fully drawn-out position. <IMAGE>

Description

Die Erfindung betrifft ein pulverkraftbetriebenes Bolzensetzgerät mit einem Gehäuse, in dem ein zwischen einer voll ausgezogenen und einer eingeschobenen Position axial verschiebbarer, an der der Mündungsseite abgewandten Seite durch einen Laufboden begrenzten Lauf in einer Laufführungsbohrung gelagert ist, die ferner eine Laufhülse mündungsseitig und der Lauf einen einen Kolbenkopf aufweisenden Kolben aufnimmt, wobei die Laufhülse den Lauf mündungsseitig umgibt, ein Einsatz vorgesehen ist, der Kolben durch den Lauf und den Einsatz geführt und die Laufhülse gegenüber dem Lauf begrenzt axial verschiebbar ist, wobei sich zwischen dem Kolbenkopf und dem Laufboden ein durch eine Einstelleinrichtung veränderbarer Verbrennungsraum befindet, eine in die Laufführungsbohrung federvorgespannte Sperrklinke vorgesehen ist, der Kolben mit einem Absatz zum Einfallen der Sperrklinke und der Lauf mit einem Schlitz zum Durchtritt der Sperrklinke versehen ist.The invention relates to a powder-operated bolt-actuating device with a housing in which a barrel which is axially displaceable between a fully extended and an inserted position and which is delimited on the side facing away from the muzzle side by a tread is mounted in a barrel guide bore, which barrel furthermore has a barrel sleeve on the muzzle side and the barrel one a piston having a piston head, the barrel sleeve surrounding the barrel on the muzzle side, an insert is provided, the piston is guided through the barrel and the insert and the barrel sleeve is axially displaceable to a limited extent with respect to the barrel, with a through a between the piston head and the barrel floor Adjustment device variable combustion chamber is located, a pawl spring-biased into the barrel guide bore is provided, the piston is provided with a shoulder for engaging the pawl and the barrel is provided with a slot for the pawl to pass through.

Ein derartiges pulverkraftbetriebenes Bolzensetzgerät ist aus der DE-B-1 911 008 bekannt. Hierbei ist eine radial bewegliche, entsprechend federvorgespannte Sperrklinke, deren Kopf zur Verstellung des Verbrennungsraums drehbar ist, vorgesehen, um eine Leistungsänderung des Geräts durch Veränderung der Größe des Verbrennungsraums vorzunehmen, wozu die im wesentlichen stiftförmige Sperrklinke in den Verbrennungsraum eingreift. Dies ist jedoch nachteilig, weil der Verbrennungsraum nicht vollständig abgeschlossen ist und daher zu Undichtigkeiten neigt. Außerdem können sich im Verbrennungsraum Ablagerungen bilden.Such a powder-operated bolt setting device is known from DE-B-1 911 008. Here, a radially movable, corresponding spring-loaded pawl, the head of which can be rotated to adjust the combustion chamber, is provided in order to change the power of the device by changing the size of the combustion chamber, for which purpose the essentially pin-shaped pawl engages in the combustion chamber. However, this is disadvantageous because the combustion chamber is not completely closed and therefore tends to leak. Deposits can also form in the combustion chamber.

Aus der DE-B-2 142 705 ist ein Bolzensetzgerät bekannt, bei dem eine Sperrklinke in Form eines radial federvorgespannten und verschiebbaren Stifts vorgesehen ist, der an einer Stütze angeordnet ist, die axial verstellbar ist, um den Verbrennungsraum zu verändern. Der Kolben ist hierbei mit einer umlaufenden Nut versehen, die zur Mündung des Laufs hin tiefer wird, wobei das damit in Eingriff gelangende Ende der stiftförmigen Sperklinke entsprechend abgeschrägt ist. Beim axialen Zurückschieben des Laufs zum Zurückfahren des Kolbens müssen beide zunächst die Sperrklinke in radialer Richtung unter entsprechend großem Kraftaufwand wegdrücken, wodurch die Gefahr eines Klemmens der Sperrklinke hervorgerufen wird. Die Sperrklinke fällt bei vergrößertem Verbrennungsraum in die Nut des Kolbens ein, ohne daß dieser in seine vollständig eingeschobene Position gelangt. Hierdurch können sich Ablagerungen im Verbrennungsraum bilden, die zudem wiederum die Betätigung der Sperrklinke beeinträchtigen können.From DE-B-2 142 705 a bolt setting device is known in which a pawl is provided in the form of a radially spring-loaded and displaceable pin, which is arranged on a support which is axially adjustable in order to change the combustion chamber. The piston is provided with a circumferential groove which becomes deeper towards the mouth of the barrel, the end of the pin-shaped locking pawl engaging therewith being correspondingly chamfered. When the barrel is pushed back axially to retract the piston, both must first push the pawl away in the radial direction with a correspondingly large amount of force, which creates the risk of the pawl jamming. When the combustion chamber is enlarged, the pawl falls into the groove of the piston without the piston reaching its fully inserted position. As a result, deposits can form in the combustion chamber, which in turn can also impair the actuation of the pawl.

Aufgabe der Erfindung ist es, ein pulverkraftbetriebenes Bolzensetzgerät der eingangs genannten Art zu schaffen, bei dem eine Leistungsänderung bei geschlossenem Verbrennungsraum vornehmbar ist, ohne daß sich in diesem Ablagerungen bilden.The object of the invention is to provide a powder-operated bolt-actuating device of the type mentioned, in which a change in output can be undertaken with the combustion chamber closed, without deposits forming in it.

Diese Aufgabe wird entsprechend dem kennzeichnenden Teil des Anspruchs 1 dadurch gelöst, daß die Einstelleinrichtung eine axial in Laufrichtung verstellbare Stütze umfaßt, die die in die Laufführungsbohrung einschwenkbare Sperrklinke trägt, die einerseits in eine im wesentlichen axial ausgerichtete Position federvorgespannt ist und andererseits an ihrem der Mündung abgewandten Ende eine in die Laufführungsbohrung vorgespannte Blattfeder trägt, wobei der Lauf einen rückseitig mündenden Schlitz, der mündungsseitig zur Laufbohrung hin offen ist, zum Überfahren der Sperrklinke und einwärts gerichteten Verschwenken derselben beim Erfassen der Blattfeder aufweist, die Laufhülse den Einsatz aufnimmt und ein gehäusefester Mitnehmer derart angeordnet ist, daß er den Kolbenkopf durch Ausziehen des Laufs in die voll ausgezogene Position bis zum Laufboden verschiebt.This object is achieved in accordance with the characterizing part of claim 1 in that the adjusting device comprises an axially adjustable support which carries the pawl which can be pivoted into the barrel guide bore and which is spring-biased on the one hand into an essentially axially aligned position and on the other hand at its mouth end facing away into the barrel guide bore biased leaf spring carries, the barrel has a rear-facing slot, which is open on the mouth side towards the barrel bore, for driving over the pawl and pivoting the same when grasping the leaf spring, the barrel sleeve receives the insert and a housing-fixed driver is arranged such that it the piston head is moved to the running floor by pulling the barrel into the fully extended position.

Hierbei wird durch vollständiges Ausziehen des Laufs der davon aufgenommene Kolben bezüglich des Laufs in seine Endposition am Laufboden, d.h. entlang des Verbrennungsraums bewegt, wodurch eventuelle anhaftende Rückstände vom vorherigen Schuß gelöst werden, so daß sie beim nächsten Schuß ausgeblasen werden können. Beim darauffolgenden Zurückschieben des Lauf zum Schussbereitmachen des Geräts wird dann der Kolben mittels einer axial in einer von außen einstellbaren Position angeordneten Sperrklinke in einer die Größe des Verbrennungsraums festlegenden Position gefangen, während der Lauf weiter in seine durch einen Anschlag (Kartuschenbandführung) begrenzte Endstellung verschoben wird. Hierdurch wird nicht in den Verbrennungsraum eingegriffen, dieser ist vielmehr vollkommen geschlossen und damit dicht sowie ferner selbstreinigend. - Bestehende Bolzensetzgeräte können ohne weiteres entsprechend nachgerüstet werden.In this case, by completely pulling out the barrel, the piston received by it is moved to its end position on the barrel floor with respect to the barrel, i.e. moved along the combustion chamber, whereby any adhering residues are released from the previous shot so that they can be blown out on the next shot. When the barrel is then pushed back in order to prepare the device for firing, the piston is then caught in a position determining the size of the combustion chamber by means of a pawl axially arranged in an externally adjustable position, while the barrel is further shifted into its end position limited by a stop (cartridge band guide) . As a result, the combustion chamber is not interfered with, rather it is completely closed and therefore leak-proof and also self-cleaning. - Existing bolt-setting tools can easily be retrofitted accordingly.

Weitere Ausgestaltungen der Erfindung sind der nachfolgenden Beschreibung und den Unteransprüchen zu entnehmen.Further refinements of the invention can be found in the following description and the subclaims.

Die Erfindung wird nachstehend anhand eines in den beigefügten Abbildungen dargestellten Ausführungsbeispiels näher erläutert.The invention is explained below with reference to an embodiment shown in the accompanying figures.

Fig. 1 zeigt ausschnittweise den laufseitigen Teil eines pulverkraftbetriebenen Bolzensetzgerätes in dessen zusammengeschobener Stellung im Schnitt.Fig. 1 shows a section of the barrel-side part of a powder-operated bolt gun in its collapsed position in section.

Fig. 2 zeigt einen Ausschnitt von Fig. 1 bei auseinander gezogenem Bolzensetzgerät.FIG. 2 shows a section of FIG. 1 with the bolt-setting tool pulled apart.

Das ausschnittweise dargestellte pulverkraftbetriebene Bolzensetzgerät umfaßt ein Gehäuse 1, das eine Laufführungshülse 2 aufnimmt, deren Laufführungsbohrung 3 einen Lauf 4 axial verschiebbar aufnimmt. Der Lauf 4 trägt an seinem der Mündung abgewandten Ende ein Kartuschenlager 5 und besitzt mündungsseitig einen Abschnitt 4' mit vermindertem Durchmesser, der sich etwa bis zur Mitte des Laufs 4 erstreckt. Die Laufführungsbohrung 3 nimmt ferner mündungsseitig eine Laufhülse 6 bis zu einem Anschlag 7 auf. Die Laufhülse 6 umgreift den Abschnitt 4' des Laufs 4 und besitzt eine Innenschulter 8, an der sich ein von der Laufhülse 6 aufgenommener Einsatz 9, der sich mündungsseitig aus der Laufhülse 6 heraus erstreckt, abstützt. Der Einsatz 9 ist aus der Laufhülse 6 von der der Mündung abgewandten Seite her herausnehmbar und wird im zusammengeschobenen Zustand des Geräts von der mündungsseitigen Stirnseite des Laufs 4 abgestützt. Ein Kolben 10 ist in der Laufbohrung 4'' des Laufs 4 angeordnet, mit seinem Kolbenkopf 10' in der Laufbohrung 4'' sowie ferner mündungsseitig in dem Einsatz 9 geführt und wird durch Zündung einer vom Kartuschenlager 5 aufgenommenen, beispielsweise über ein Kartuschenband 11 zugeführten Kartusche 12 zum Setzen eines in den Einsatz 9 eingelegten Bolzens in Bewegung versetzt. Das Kartuschenband 11 wird dabei über einen Schlitz 13 einer das Kartuschenlager 5 vor einem Schuß aufnehmenden und axial eine Zündnadel 14 führenden Führung 15 geführt.The powder-operated bolt-actuating device shown in detail comprises a housing 1, which receives a barrel guide sleeve 2, the barrel guide bore 3 of which receives a barrel 4 in an axially displaceable manner. The barrel 4 carries a cartridge bearing at its end facing away from the mouth 5 and has a section 4 ′ with a reduced diameter on the mouth side, which extends approximately to the middle of the barrel 4. The barrel guide bore 3 also receives a barrel sleeve 6 up to a stop 7 on the mouth side. The running sleeve 6 encompasses the section 4 'of the barrel 4 and has an inner shoulder 8 on which an insert 9, which is received by the running sleeve 6 and extends out of the running sleeve 6 on the muzzle side, is supported. The insert 9 can be removed from the barrel sleeve 6 from the side facing away from the mouth and is supported by the mouth-side end face of the barrel 4 when the device is pushed together. A piston 10 is arranged in the barrel bore 4 ″ of the barrel 4, with its piston head 10 ′ in the barrel bore 4 ″ and also on the mouth side in the insert 9 and is ignited by a cartridge bearing 5, for example via a cartridge belt 11 Cartridge 12 set in motion to insert a bolt inserted into insert 9. The cartridge band 11 is guided over a slot 13 of a guide 15 receiving the cartridge bearing 5 before a shot and axially guiding an ignition needle 14.

Der Lauf 4 besitzt im Bereich des Abschnitts 4' Abflachungen 16, die sich axial über eine vorbestimmte Länge erstrecken, während die Laufhülse 6 Keile 17 trägt, die sich in den Bereich der Abflachungen 16 erstrecken und den Hub der Laufhüse 6 gegenüber dem Lauf 4 zur Mündungsseite hin begrenzen.The barrel 4 has in the area of the section 4 'flats 16 which extend axially over a predetermined length, while the barrel sleeve 6 carries wedges 17 which extend in the area of the flats 16 and the stroke of the barrel 6 relative to the barrel 4 Limit the mouth side.

Die Laufhülse 6 trägt einen von der Außenseite her eingeschraubten Mitnehmer 18, der über einen zur Laufbohrung 4'' offenen Axialschlitz 19 des Laufs 4 in dessen Bohrung soweit eingreift, daß er beim vollständigen Ausziehen des Laufs 4 mittels der Laufhülse 6 durch Angreifen an einem Bund 10'' des mit einem Kolbendichtring versehenen Kolbenkopfes 10' den Kolben 10 verschiebt, bis dessen Kolbenkopf 10' den kegelstumpfförmigen, eine mittige Verbrennungsgasdurchtrittsöffnung aufweisenden Laufboden 20 in die Nähe des Kartuschenlagers 5 erreicht (was einem Verbrennungsraum minimaler Größe, d.h. maximaler Leistung entspräche).The barrel sleeve 6 carries a driver 18 screwed in from the outside, which engages through an axial slot 19 of the barrel 4, which is open to the barrel bore 4 '', so far that it engages with a collar when the barrel 4 is completely pulled out by means of the barrel sleeve 6 10 ″ of the piston head 10 ′ provided with a piston sealing ring displaces the piston 10 until its piston head 10 ′ reaches the frustoconical tread 20 having a central combustion gas passage opening in the vicinity of the cartridge bearing 5 (which would correspond to a combustion chamber of minimal size, ie maximum output).

Der Kolben 10 besitzt eine umlaufende, eine Einlaufschräge aufweisende Nut 21, die mit einer Einstelleinrichtung 22 für die Leistung des Bolzensetzgeräts zusammenarbeitet. Über die Einstelleinrichtung 22 wird die Größe des zwischen dem Kolbenkopf 10' und dem Laufboden 20 befindlichen Verbrennungsraums 23 eingestellt. Die Einstelleinrichtung 22 umfaßt eine Sperrklinke 24, die in die Nut 21 einfallen kann und mit ihrer Achse 25 drehbar in einer Stütze 26 gelagert ist, die ihrerseits in einer Ausnehmung 27 des Gehäuses 1 und der Laufhülse 6 verschiebbar angeordnet ist. Die Stütze 26 besitzt einen nach außen ragenden Gewindezapfen 28, der durch einen axialen Schlitz 29 einer am Gehäuse 1 befestigten Lasche 30 zur Abdeckung der Ausnehmung 27 und zum Führen der Einstelleinrichtung 22 ragt und eine Mutter 31 zum Feststellen der Stütze 26 in einer gewünschten Position in bezug auf den Schlitz 29 und damit in bezug auf die Ausnehmung 27 trägt.The piston 10 has a circumferential, an inlet slope having groove 21 which cooperates with an adjusting device 22 for the performance of the bolt-actuating device. The size of the combustion chamber 23 located between the piston head 10 ′ and the running floor 20 is set via the adjusting device 22. The adjusting device 22 comprises a pawl 24, which can fall into the groove 21 and is rotatably mounted with its axis 25 in a support 26, which in turn is slidably arranged in a recess 27 of the housing 1 and the barrel sleeve 6. The support 26 has an outwardly projecting threaded pin 28, which projects through an axial slot 29 of a tab 30 fastened to the housing 1 to cover the recess 27 and to guide the adjusting device 22, and a nut 31 for fixing the support 26 in a desired position in with respect to the slot 29 and thus with respect to the recess 27.

Die Sperrklinke 24 wird durch eine an dieser oder an ihrer Achse angreifende und an der Stütze 26 festgelegte (relativ schwache) Spiralfeder 32 in eine Position vorgespannt (Fig. 3), in der die Sperrklinke 24 mit ihrem freien Ende zur Mündungsseite des Bolzensetzgeräts derart gerichtet ist, daß der Lauf 4, wenn er von seiner vorderen ausgezogenen Position in die hintere Position verschoben wird, die Sperrklinke 24 überfahren kann, da der Lauf 4 einen axial verlaufenden Schlitz 33 trägt, der an seiner Rückseite mündet.The pawl 24 is biased by a (relatively weak) spiral spring 32 which engages on this axis or on its axis and is fixed on the support 26 (FIG. 3), in which the pawl 24 has its free end directed towards the mouth side of the bolt-actuating device in this way is that the barrel 4, when moved from its forward extended position to the rear position, can pass over the pawl 24 because the barrel 4 has an axially extending slot 33 which opens at its rear.

Der rückwärtige Schlitz 33, der gegenüber dem offenen, den Durchtritt des Mitnehmers 18 ermöglichenden Axialschlitz 19 angeordnet ist, ist mündungsseitig zur Laufbohrung 4'' hin ebenfalls offen, so daß die Sperrklinke 24 durch den Schlitz 33 hindurch mit der Nut 21 in Eingriff gelangen kann, wobei das entsprechende Verschwenken der Sperrklinke 24 dadurch bewirkt wird, daß eine an der Sperrklinke 24 befestigte, im ausgezogenen Zustand des Laufs 4 in die Laufführungsbohrung 3 ragende Blattfeder 34 von der Rückseite des Laufs 2 bei dessen Einschieben aus der ausgezogenen Position mitgenommen und in den Schlitz 33 gedrückt wird, wodurch die Blattfeder 34 die Sperrklinke 24 in Richtung auf den Kolben 10 vorspannt. Die von der Blattfeder 34 auf die Sperrklinke 24 ausgeübte Kraft ist daher größer als die der Spiralfeder 32. Wenn die Sperrklinke 24 in die Nut 21 eingerastet ist, in welcher Position die Sperrklinke 24 durch Anlage an einer Anlagefläche der Stütze 26 am Weiterdrehen gehindert wird, bleibt der Kolben 10 beim weiteren Einschieben des Laufs 4 in der durch die Sperrklinke 24 fixierten Position zum Gehäuse 1 stehen. Je nach axialer Stellung der Stütze 26 ergibt sich daher eine bestimmte, einer gewünschten Leistung entsprechende Größe des Verbrennungsraums 23.The rear slot 33, which is arranged opposite the open axial slot 19 which allows the passage of the driver 18, is also open on the mouth side towards the bore 4 '', so that the pawl 24 can engage with the groove 21 through the slot 33 , wherein the corresponding pivoting of the pawl 24 is effected in that a leaf spring 34 attached to the pawl 24 and projecting into the barrel guide bore 3 in the extended state of the barrel 4 is carried along from the rear of the barrel 2 when it is inserted from the extended position and into the Slot 33 is pressed, whereby the leaf spring 34 biases the pawl 24 in the direction of the piston 10. The force exerted by the leaf spring 34 on the pawl 24 is therefore greater than that of the spiral spring 32. When the pawl 24 is engaged in the groove 21, in which position the Locking pawl 24 is prevented from rotating further by contacting a contact surface of the support 26, the piston 10 remains in the position relative to the housing 1 when the barrel 4 is pushed in further. Depending on the axial position of the support 26, there is therefore a specific size of the combustion chamber 23 corresponding to a desired output.

Die axiale Länge des Schlitzes 33 ist derart bemessen, daß die Nut 21 sich in einem solchen Abstand mündungsseitig von dem Kolbenkopf 10' befindet, daß der Kolbenkopf 10' auch bei maximalem Verbrennungsraum 23 noch vollständig vom Lauf 4 umgeben ist und nicht in den Bereich des Durchtritts vom Schlitz 33 zur Laufbohrung 4'' ragt. Die axiale Länge, über die der Schlitz 33 zur Laufbohrung 4'' hin offen ist, entspricht der Länge, die benötigt wird, um den Kolben 4 zum Einstellen eines vorgesehenen minimalen und maximalen Verbrennungsraums durch entsprechendes Verstellen der Sperrklinke 34 gegenüber dem Lauf 4 festhalten zu können. Der Schlitz 33 ist gegenüber dem Axialschlitz 19 zweckmäßigerweise um 180° versetzt.The axial length of the slot 33 is dimensioned such that the groove 21 is located at the mouth on the mouth side at such a distance from the piston head 10 'that the piston head 10' is still completely surrounded by the barrel 4 and not in the region of the combustion chamber 23 Passage from the slot 33 to the bore 4 '' protrudes. The axial length over which the slot 33 is open to the barrel bore 4 ″ corresponds to the length that is required to hold the piston 4 in place to set an intended minimum and maximum combustion chamber by correspondingly adjusting the pawl 34 relative to the barrel 4 can. The slot 33 is advantageously offset by 180 ° relative to the axial slot 19.

Anstelle der Mutter 31 und des Gewindestiftes 28 sowie der Lasche 30 kann auch jede andere geeignete Feststelleinrichtung für die Einstelleinrichtung 22 verwendet werden.Instead of the nut 31 and the set screw 28 and the tab 30, any other suitable locking device for the setting device 22 can also be used.

Claims (3)

Pulverkraftbetriebenes Bolzensetzgerät mit einem Gehäuse (1), in dem ein zwischen einer voll ausgezogenen und einer eingeschobenen Position axial verschiebbarer, an der der Mündungsseite abgewandten Seite durch einen Laufboden (20) begrenzten Lauf (4) in einer Laufführungsbohrung (3) gelagert ist, die ferner eine Laufhülse (6) mündungsseitig und der Lauf (4) einen einen Kolbenkopf (10') aufweisenden Kolben (10) aufnimmt, wobei die Laufhülse (6) den Lauf (4) mündungsseitig umgibt, ein Einsatz (9) vorgesehen ist, der Kolben (10) durch den Lauf (4) und den Einsatz (9) geführt und die Laufhülse (6) gegenüber dem Lauf (4) begrenzt axial verschiebbar ist, wobei sich zwischen dem Kolbenkopf (10') und dem Laufboden (20) ein durch eine Einstelleinrichtung (22) veränderbarer Verbrennungsraum (23) befindet, eine in die Laufführungsbohrung (3) federvorgespannte Sperrklinke (24) vorgesehen ist, der Kolben (10) mit einem Absatz zum Einfallen der Sperrklinke (24) und der Lauf (4) mit einem Schlitz (33) zum Durchtritt der Sperrklinke (24) versehen ist, dadurch gekennzeichnet, daß die Einstelleinrichtung (22) eine axial in Laufrichtung verstellbare Stütze (26) umfaßt, die die in die Laufführungsbohrung (3) einschwenkbare Sperrklinke (24) trägt, die einerseits in eine im wesentlichen axial ausgerichtete Position federvorgespannt ist und andererseits an ihrem der Mündung abgewandten Ende eine in die Laufführungsbohrung (3) vorgespannte Blattfeder (34) trägt, wobei der Lauf (4) einen rückseitig mündenden Schlitz (33), der mündungsseitig zur Laufbohrung (4'') hin offen ist, zum Überfahren der Sperrklinke (24) und einwärts gerichteten Verschwenken derselben beim Erfassen der Blattfeder (34) aufweist, die Laufhülse (6) den Einsatz (9) aufnimmt und ein gehäusefester Mitnehmer (18) derart angeordnet ist, daß er den Kolbenkopf (10') durch Ausziehen des Laufs (4) in die voll ausgezogene Position bis zum Laufboden (20) verschiebt.Powder-operated bolt-actuating device with a housing (1) in which a barrel (4), which is axially displaceable between a fully extended and an inserted position and is delimited on the side facing away from the muzzle side by a tread (20), is mounted in a barrel guide bore (3) furthermore a barrel (6) on the mouth side and the barrel (4) receives a piston (10 ') having a piston (10), the barrel sleeve (6) surrounding the barrel (4) on the mouth side, an insert (9) is provided which Piston (10) through the barrel (4) and the insert (9) and the barrel sleeve (6) relative to the barrel (4) is axially displaceable to a limited extent, wherein between the piston head (10 ') and the tread (20) combustion chamber (23) which can be changed by an adjusting device (22), a pawl (24) spring-biased into the barrel guide bore (3) is provided, the piston (10) with a shoulder for engaging the pawl (24) and the barrel (4) a A slot (33) for the passage of the pawl (24) is provided, characterized in that the adjusting device (22) comprises an axially adjustable support (26) which carries the pawl (24) which can be pivoted into the barrel guide bore (3). which is spring-biased into an essentially axially aligned position on the one hand and on the other hand carries at its end facing away from the mouth a leaf spring (34) biased into the barrel guide bore (3), the barrel (4) having a slot (33) opening at the rear, which muzzle-side Barrel bore (4 '') is open, for driving over the pawl (24) and pivoting it inward when gripping the leaf spring (34), the barrel sleeve (6) receives the insert (9) and a housing-fixed driver (18) in this way is arranged that it moves the piston head (10 ') by pulling out the barrel (4) in the fully extended position to the bottom (20). Bolzensetzgerät nach Anspruch 1, dadurch gekennzeichnet, daß der Lauf (4) einen axialen, zur Laufbohrung (4'') offenen Schlitz (19) für den Durchtritt des Mitnehmers (18) aufweist, der um etwa 180° bezüglich des axialen, rückseitig offenen Schlitzes (33) des Laufs (4) für die Sperrklinke (24) versetzt ist.Bolt-setting tool according to claim 1, characterized in that the barrel (4) has an axial slot (19) which is open to the barrel bore (4 '') for the passage of the driver (18) and which is approximately 180 ° is offset with respect to the axial slot (33) of the barrel (4) for the pawl (24) which is open at the rear. Bolzensetzgerät nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Stütze (26) einen nach außen durch einen axialen Schlitz (29) geführten Zapfen (28) trägt, über den die Stütze (26) gegenüber dem Gehäuse (1) feststellbar ist.Bolt-setting tool according to Claim 1 or 2, characterized in that the support (26) carries a pin (28) which is guided outwards through an axial slot (29) and by means of which the support (26) can be fixed relative to the housing (1).
EP93118363A 1992-11-21 1993-11-12 Powder-actuated bolt driving tool Expired - Lifetime EP0599157B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4239282A DE4239282C2 (en) 1992-11-21 1992-11-21 Powder-operated stud setting tool
DE4239282 1992-11-21

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EP0599157A1 true EP0599157A1 (en) 1994-06-01
EP0599157B1 EP0599157B1 (en) 1997-01-08

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EP93118363A Expired - Lifetime EP0599157B1 (en) 1992-11-21 1993-11-12 Powder-actuated bolt driving tool

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EP (1) EP0599157B1 (en)
AT (1) ATE147311T1 (en)
DE (2) DE4239282C2 (en)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
WO2006015241A1 (en) * 2004-07-28 2006-02-09 Power Products Iii, Llc Powder activated setting tool piston retainer arrangement and method
CN107190951A (en) * 2017-07-13 2017-09-22 福建省永正工程质量检测有限公司 A kind of holdfast fixing equipment

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Publication number Priority date Publication date Assignee Title
DE10259777B4 (en) * 2002-12-19 2016-06-30 Hilti Aktiengesellschaft Internal combustion engine, in particular setting device for fastening elements

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US3302840A (en) * 1964-04-27 1967-02-07 Japan Drive It Explosively actuated fastener driving tool
DE1911008A1 (en) * 1968-05-01 1969-11-06 Olin Mathieson Power operated tool for driving fasteners into masonry and the like.
US3652003A (en) * 1970-04-06 1972-03-28 Gen Cable Corp Powder actuated tool
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US5029744A (en) * 1990-06-13 1991-07-09 Hsin-Ho Mfg. Co. Ltd. Mechanism for controlling the powder impact force on a projectile

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Publication number Priority date Publication date Assignee Title
US3302840A (en) * 1964-04-27 1967-02-07 Japan Drive It Explosively actuated fastener driving tool
DE1911008A1 (en) * 1968-05-01 1969-11-06 Olin Mathieson Power operated tool for driving fasteners into masonry and the like.
US3652003A (en) * 1970-04-06 1972-03-28 Gen Cable Corp Powder actuated tool
DE2142705B2 (en) * 1971-08-26 1973-08-30 Bettermann Elektro oHG, 5757 Lendnngsen DEVICE FOR CHANGING THE SIZE OF THE INITIAL COMBUSTION CHAMBER ON A COMBUSTION BOLT SET
US5029744A (en) * 1990-06-13 1991-07-09 Hsin-Ho Mfg. Co. Ltd. Mechanism for controlling the powder impact force on a projectile

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006015241A1 (en) * 2004-07-28 2006-02-09 Power Products Iii, Llc Powder activated setting tool piston retainer arrangement and method
US7287679B2 (en) 2004-07-28 2007-10-30 Powers Products Iii, Llc Powder activated setting tool piston retainer arrangement and method
CN107190951A (en) * 2017-07-13 2017-09-22 福建省永正工程质量检测有限公司 A kind of holdfast fixing equipment
CN107190951B (en) * 2017-07-13 2019-01-15 福建省永正工程质量检测有限公司 A kind of holdfast fixed equipment

Also Published As

Publication number Publication date
DE59305063D1 (en) 1997-02-20
DE4239282C2 (en) 1994-10-20
EP0599157B1 (en) 1997-01-08
DE4239282A1 (en) 1994-05-26
ATE147311T1 (en) 1997-01-15

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