EP0308322B1 - Indirekt wirkendes Setzgerät mit Leistungssteuerung - Google Patents

Indirekt wirkendes Setzgerät mit Leistungssteuerung Download PDF

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Publication number
EP0308322B1
EP0308322B1 EP88402308A EP88402308A EP0308322B1 EP 0308322 B1 EP0308322 B1 EP 0308322B1 EP 88402308 A EP88402308 A EP 88402308A EP 88402308 A EP88402308 A EP 88402308A EP 0308322 B1 EP0308322 B1 EP 0308322B1
Authority
EP
European Patent Office
Prior art keywords
barrel
piston
adjustment means
pawl
stop
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 - Lifetime
Application number
EP88402308A
Other languages
English (en)
French (fr)
Other versions
EP0308322A1 (de
Inventor
Roland Almeras
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.)
Societe de Prospection et dInventions Techniques SPIT SAS
Original Assignee
Societe de Prospection et dInventions Techniques SPIT SAS
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 Societe de Prospection et dInventions Techniques SPIT SAS filed Critical Societe de Prospection et dInventions Techniques SPIT SAS
Publication of EP0308322A1 publication Critical patent/EP0308322A1/de
Application granted granted Critical
Publication of EP0308322B1 publication Critical patent/EP0308322B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B25C1/143—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge acting on an intermediate plunger or anvil trigger operated
    • 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
    • B25C1/18—Details and accessories, e.g. splinter guards, spall minimisers

Definitions

  • the present invention relates to an indirect fire tampon sealing apparatus, comprising, in a barrel holder, a barrel, a piston mounted in friction in the barrel, to be driven in displacement, under the action of the combustion gases of a propellant charge housed in a load carrier integral with the barrel, and drive the buffer, a pawl mounted on the barrel holder, arranged to protrude into a groove of the barrel and retain the piston, and means for varying the volume of the combustion chamber, between the piston and the charge, and therefore the firing power, which comprise adjustment means, mounted movably relative to the barrel, and means projecting into the barrel arranged so that the displacement of the means of adjustment relative to the barrel causes the piston to move in the barrel.
  • the advantage of a sealing device actuated by a propellant charge, powder, is to be autonomous and to be able to have variable energy.
  • An apparatus of the type mentioned above is also known from document FR-A-2 218 168. It is, however, an apparatus with complex adjustment means. The positioning of the piston is carried out when the device is closed, the adjustment means are requested both at the opening and at the closing of the device and also increase the pressing force. These adjustment means include a spring that can cause variations in the power adjustment.
  • the present invention therefore aims to overcome the drawbacks of the prior art and to propose an apparatus, for sealing buffers, with a robust power adjustment system, easy to disassemble and with great regularity.
  • the present invention relates to an apparatus of the type mentioned above, characterized in that the piston comprises a head with an enlarged portion having a rear face, the adjustment means are mounted on the barrel and said means protruding in the barrel comprise a stop on which is provided a shoulder arranged to come into abutment against the rear face of the enlarged portion of the piston head, the abutment being free in translation and arranged for, in abutment on the rear side against the adjustment means , come to bear on the front side against the pawl arranged to position the piston in the barrel.
  • the invention also relates to an apparatus of the type mentioned above, characterized in that the adjustment means are mounted on the barrel and said means projecting into the barrel comprise a pin integral with the piston, arranged to bear on the side rear against the adjustment means, come to bear on the front side against the pawl arranged to position the piston in the barrel.
  • adjustment means are mounted to be driven in rotation on the barrel.
  • the load carrier is arranged in the barrel
  • the adjustment means comprise a threaded ring mounted on the threaded rear part of the barrel and the axial distance separating the surfaces of the stop arranged to come into abutment respectively against the piston and the pawl is substantially equal to the axial distance separating the surface of the piston serving as support for the stop and the surface of the piston coming to bear against the pawl, preferably very slightly larger.
  • the sealing apparatus in its embodiment shown in Figures 1 to 6, comprises a barrel holder 1, of axis 20, in which is formed a loading opening 2, a barrel 3, mounted to slide in the holder -canon 1, between a rear position, against a cylinder head 4, in which is housed a not shown striker, and a front opening position.
  • the rear part 5 of the barrel has a bore 6 for receiving a propellant charge, called a charge carrier, and it is tapped to receive by screwing a power adjustment ring 7.
  • a piston 8, with a head with an enlarged portion 9 and a rod 10, is slidably mounted in friction in the barrel by means of a rod 11 surrounding the enlarged portion 9 of the piston 8.
  • the barrel has a corresponding bore 16, with an annular radial shoulder 36 which can serve as a stop for the portion enlarged 9 of the piston 8.
  • a buffer guide 12 is fixed, here by screwing, to the front of the barrel 3.
  • a pawl 13 for retaining and repositioning in the firing position of the piston 8 is mounted on the barrel holder 1 and , under the action of return means, protrudes radially in the barrel 3 through a groove 14 formed in the barrel.
  • a power adjustment stop 15 which will be described in detail below, is maintained between the adjustment ring 7 and the enlarged portion 9 of the piston 8.
  • the apparatus is intended to propel a tampon, not shown, to be introduced by the tampon guide 12, into a receiving material, by means of the piston 8 - it is an indirect-fire apparatus - intended to be driven towards the before by the combustion gases of an explosive charge placed in the housing 6.
  • the housing 6 and the portion of the internal bore 16 of the barrel extending behind the piston 8 delimit the combustion chamber 44, of adjustable volume , as will now be discussed.
  • This adjustment is made by moving the ring 7 on the rear part 5 of the barrel. In reality, it is a relative displacement, because it is the barrel which must be moved in the ring. The latter is in fact immobilized in rotation by a boss 17 which can, on the other hand, slide axially in a groove 18 of the gun holder.
  • the extreme rear position of the ring 7 on the barrel is here determined by a race limiting rod 19 mounted at the rear end of the barrel. To this end, the ring 7 has an internal milling 21 which can come into abutment on the rod 19.
  • a stop latch 22 is mounted on the barrel holder 1, to pass through its internal bore as well as the groove 18 and serve as a front stop for the boss 17 of the adjustment ring 7.
  • the latch 22 thus avoids, during the opening the device, that the barrel, which is integral with the ring 7 with its boss 17, does not unexpectedly come out of the barrel holder 1, when the pawl is retracted.
  • a scale 23 of power levels is reported on cannon 3; it appears when the device is fully opened.
  • the power adjustment stop 15 is a generally rectangular piece freely mounted in axial translation in an extension of the groove 14 of the pawl. Symmetrical here, this part has two lateral ears 24 (there could therefore have been only one) extending between its front face 27 and a rear plane 28 and arranged to bear, by their upper faces on the Figure 5, on a flat 25 of the barrel. Significantly in its central part, the part 15 has a shoulder 26.
  • the front face 27 of the stop 15 is intended to come into abutment against the pawl 13 in the retaining position and the barrel pulled forward; the shoulder 26 can come to bear against the rear face 29 of the enlarged portion 9 of the piston 8; the rear surfaces 28 of the ears 24 are intended to come into abutment against the annular front surface 30 of the ring 7.
  • the flat 25 of the barrel extends between a transverse front shoulder 31 and a small rear shoulder 32, between which can move freely the ears 24 of the stop 15 and which therefore delimit its travel (Figure 6); behind the shoulder 32, a recess 33 has also been formed on the barrel for the rear part of the stop 15.
  • the stop 15, angularly fixed, is held radially in the barrel 3 by the extension of the pawl groove 14 and the inner surface 34 of the ring 7 ( Figure 6).
  • the axial distance separating the surfaces 26 and 27 of the stop 15 is very slightly greater than the axial distance separating the rear face 29 of the enlarged portion 9 of the piston and its front face 35 intended to bear against the pawl 13 in the position of retainer and the barrel pulled forward.
  • the power can be adjusted both with the barrel pulled forward and the device closed, although in this case it would be better to speak of variation in the volume of the chamber. combustion as adjustment, since the scale of power levels 23 is not visible.
  • a second remark must be made.
  • the barrel being pulled forward, the relative displacement of the barrel and the adjusting ring at the same time causes the desired positioning of the piston in the barrel, if it is a question of reducing the power. If it is to increase it, it is only after closing and reopening the device that the piston is positioned correctly.
  • the power is adjusted, the device being closed, the relative displacement of the barrel and the ring does not bring about the desired positioning of the piston in the barrel. It is only when the device is opened, which the operator must then do before closing it again, that the piston is positioned appropriately.
  • the desired positioning of the piston in the barrel takes place at the end of an opening phase of the device, at the moment when the adjustment stop, while the operator pulls the barrel towards the front comes to bear against the pawl.
  • the pawl 13 is retracted from its groove 14 in order to be able to turn-unscrew the barrel 3 and advance it into the ring 7.
  • the relative position of the barrel 3 and the ring 7 being axially fixed, we release the pawl 13 which rises again in the barrel 3 through the groove 14.
  • the front face 35 of the piston head is in abutment against the rear face 37 of the pawl, just like the front face 27 of the stop 15 against which the ring 7 is also in abutment.
  • the adjustment of figure 1 corresponds to the maximum power, the ring 7 being almost in rear stop on the rod 19, or the barrel 3 almost in front stop, by its ring 19, on the ring 7.
  • the adjustment of figure 2 corresponds to a lower power, and that of FIG. 6, to an even lower power.
  • the minimum power adjustment is carried out by screwing the barrel 3 into the ring 7 until the front face 27 of the stop 15, pushed back by the ring 7 in the extreme front position, comes practically to bear against the front shoulder. 31 of barrel 3 ( Figure 6).
  • the function of the stop 15 therefore amounts to allowing the ring 7, by means of a radial projection, to move the position of the piston during the operation of the barrel by the operator, or to transform the rotational movement of the ring relative to the barrel in translational movement of the piston.
  • the stop 15 has been studied in its shape, in order, in the event of a sudden opening of the barrel, to reduce as much as possible the risks of rupture; it therefore has significant contact surfaces with the pawl 13 and the adjustment ring 7 and here works in compression between these parts.
  • the adjustment system of the apparatus of FIG. 7 differs from that of the apparatus of FIGS. 1 to 6 by the fact that the stop is a pin 15 ′ driven radially into the piston head 9 ′ arranged accordingly, the other parts of the device being identical to those of the device previously described. Apart from the fact that the piston head 9 ′ no longer has to cooperate directly with the pawl 13, but by means of the pin 15 ′, secured to the head, the operation of this latter device remains identical to that of the device of FIGS. 1 to 6.
  • the positioning of the piston for determining the volume of the combustion chamber is effected, after positioning of the ring, when the pin 15 ′ is in contact, by its two opposite radial faces 27 ′ and 28 ′, with the pawl 13 and the ring 7, respectively.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Coating Apparatus (AREA)

Claims (9)

1. IndirektschuB wirkendes Bolzensetzgerät mit einem Lauf (3) in einem Laufhalter (1), mit einem Kolben (8), der unter Reibung (11) gehalten, in dem Lauf beweglich angeordnet ist, so daß er unter der Einwirkung der Verbrennungsgase einer Treibladung, die sich in einem mit dem Lauf (3) einstückigen Ladungshalter (5) befindet, in einer Verschiebebewegung angetrieben wird und den Bolzen antreibt, mit einem an dem Laufhalter (1) angebrachten Sperr-Riegel (13), dazu vorgesehen, in eine Schlitznut (14) des Laufs hineinzuragen und den Kolben (8) zurückzuhalten, und mit Mitteln zur Veränderung des Volumens des Explosionsraums (44) zwischen dem Kolben (8) und der Ladung und folglich zur Veränderung der Schußleistung, die relativ zum Lauf verschiebbare Mittel zur Steuerung (7) umfassen sowie in den Lauf (3) hineinragende Mittel (15), die derart angeordnet sind, daß die Verschiebung der Mittel zur Steuerung (7) relativ zum Lauf die Verschiebung des Kolbens (8) in dem Lauf (3) bewirkt, dadurch gekennzeichnet, daß der Kolben (8) einen Kopf mit einer verbreiterten Partie (9) umfaßt, die eine Rückseite (29) aufweist, die Mittel zur Steuerung (7) an dem Lauf (3) angebracht sind und die besagten in den Lauf ragenden Mittel ein Anschlagelement (15) umfassen, auf dem ein Vorsprung (26) vorgesehen ist, der an der Rückseite (29) der verbreiterten Partie (9) des Kopfs des Kolbens (8) zur Anlage zu kommt, wobei das Anschlagelement (15) frei verschiebbar ist, und so beschaffen ist, daß, während es mit der Rückseite (28) an den Mitteln zur Steuerung (7) anliegt, es mit der Vorderseite (27) am Sperr-Riegel (13) zu liegen kommt, der dazu vorgesehen ist, den Kolben (8) in dem Lauf (3) in die richtige Position zu bringen.
2. Gerät nach Anspruch 1, bei dem das Anschlagelement (15) mindestens ein Ohr (24) aufweist, das sich zwischen einer Vorderseite (27), die dazu bestimmt ist, am Sperr-Riegel zur Anlage zu kommen, und einer Rückseite (28), die dazu bestimmt ist, an den Mitteln zur Steuerung (7) zur Anlage zu kommen, erstreckt.
3. Gerät nach Anspruch 2, bei dem die verbreiterte Kopfpartie (9) des Kolbens (8) eine Vorderseite (35) aufweist, dazu vorgesehen, mit dem Sperr-Riegel (13) in Kontakt zu kommen, wobei der Abstand zwischen der Vorderseite (27) des Ohres (24) des Anschlagelements (15) und dessen Vorsprung (26) im wesentlichen dem Abstand zwischen der Vorderseite (35) und der Rückseite (29) des Kolbenkopfes (9) entspricht.
4. Indirekt wirkendes Bolzensetzgerät mit einem Lauf (3) in einem Laufhalter (1), mit einem Kolben (8), der unter Reibung (11) gehalten, in dem Lauf beweglich angeordnet ist, so daß er unter der Einwirkung der Verbrennungsgase einer Treibladung, die sich in einem mit dem Lauf (3) einstückigen Ladungshalter (5) befindet, in einer Verschiebebewegung angetrieben wird und den Bolzen antreibt, mit einem an dem Laufhalter (1) angebrachten Sperr-Riegel (13), dazu vorgesehen, in eine Schlitznut (14) des Laufs hineinzuragen und den Kolben (8) zurückzuhalten, und mit Mitteln zur Veränderung des Volumens des Explosionsraums (44) zwischen dem Kolben (8) und der Ladung und folglich zur Veränderung der Schußleistung, die relativ zum Lauf verschiebbare Mittel zur Steuerung (7) umfassen sowie in den Lauf (3) hineinragende Mittel (15′), die derart angeordnet sind, daß die Verschiebung der Mittel zur Steuerung (7) relativ zum Lauf die Verschiebung des Kolbens (8) in dem Lauf (3) bewirkt, dadurch gekennzeichnet, daß die Mittel zur Steuerung (7) an dem Lauf (3) angebracht sind und die besagten in den Lauf ragenden Mittel einen mit dem Kolben (8) einstückigen Zapfen (15′) umfassen, der so beschaffen ist, daß, während er mit der Rückseite (28′) an den Mitteln zur Steuerung (7) anliegt, er mit der Vorderseite (27′) am Sperr-Riegel (13) zu liegen kommt, der dazu vorgesehen ist, den Kolben (8) in dem Lauf (3) in die richtige Position zu bringen.
5. Gerät nach einem der Ansprüche 1 bis 4, bei dem die Mittel zur Regelung (7) so angebracht sind, daß sie in einer Drehung um den Lauf (3) angetrieben werden.
6. Gerät nach einem der Ansprüche 1 bis 4, bei dem das Anschlagelement (15, 15′) in einer Verlängerung der Schlitznut (14) des Sperr-Riegels (13) angeordnet ist.
7. Gerät nach einem der Ansprüche 1 bis 6, bei dem der Laufhalter (1) einen vor den Mitteln zur Regelung (7) befindlichen Arretierbolzen (22) umfaßt.
8. Gerät nach einem der Ansprüche 1 bis 7, bei dem Mittel (19, 21; 40, 41) vorgesehen sind, um die rückseitige Verschiebung der Mittel zur Steuerung (7) auf dem Lauf (3) zu begrenzen.
9. Gerät nach einem der Ansprüche 1 bis 8, bei dem die Mittel zur Steuerung einen Ring mit Innengewinde (7) umfassen, der auf den mit einem Außengewinde versehenen rückwärtigen Teil (5) des Laufs (3) geschraubt ist und der in dem Laufhalter (1) bei einer Drehbewegung festgehalten wird.
EP88402308A 1987-09-15 1988-09-14 Indirekt wirkendes Setzgerät mit Leistungssteuerung Expired - Lifetime EP0308322B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8712755 1987-09-15
FR8712755A FR2620368A1 (fr) 1987-09-15 1987-09-15 Appareil de scellement a tir indirect a puissance de tir variable

Publications (2)

Publication Number Publication Date
EP0308322A1 EP0308322A1 (de) 1989-03-22
EP0308322B1 true EP0308322B1 (de) 1992-03-25

Family

ID=9354907

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88402308A Expired - Lifetime EP0308322B1 (de) 1987-09-15 1988-09-14 Indirekt wirkendes Setzgerät mit Leistungssteuerung

Country Status (5)

Country Link
US (1) US4877171A (de)
EP (1) EP0308322B1 (de)
DE (1) DE3869529D1 (de)
ES (1) ES2031617T3 (de)
FR (1) FR2620368A1 (de)

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US5135150A (en) * 1991-01-02 1992-08-04 Chun Wang T Pole-type powder actuated tool
US5657919A (en) * 1991-09-03 1997-08-19 Masterset Inc. Modular fastener driving tool with noise reducing structure
US5337566A (en) * 1993-03-18 1994-08-16 Burndy Corporation Powder actuated compression tool
US5670737A (en) * 1993-12-14 1997-09-23 Denel (Proprietary) Limited Breaking up of rock and the like
FR2761631B1 (fr) * 1997-04-02 1999-06-04 Spit Soc Prospect Inv Techn Appareil de scellement de tampon a retenue de canon effacable
DE19749027B4 (de) * 1997-11-06 2007-07-19 Hilti Ag Setzgerät
US6016946A (en) * 1997-12-31 2000-01-25 Porter-Cable Corporation Internal combustion fastener driving tool shuttle valve
US6041603A (en) * 1997-12-31 2000-03-28 Porter-Cable Corporation Internal combustion fastener driving tool accelerator plate
USD410182S (en) 1997-12-31 1999-05-25 Porter-Cable Corporation Internal combustion fastener driving tool
US6158643A (en) * 1997-12-31 2000-12-12 Porter-Cable Corporation Internal combustion fastener driving tool piston and piston ring
US6006704A (en) * 1997-12-31 1999-12-28 Porter-Cable Corporation Internal combustion fastener driving tool fuel metering system
US6045024A (en) * 1997-12-31 2000-04-04 Porter-Cable Corporation Internal combustion fastener driving tool intake reed valve
US6260519B1 (en) * 1997-12-31 2001-07-17 Porter-Cable Corporation Internal combustion fastener driving tool accelerator plate
DE10236482A1 (de) * 2002-08-08 2004-02-19 Hilti Ag Setzgerät
CA2713272C (en) * 2008-01-30 2013-10-15 Itw Construction Systems Australia Pty Ltd Fastener driving tool
EP2886259A1 (de) * 2013-12-18 2015-06-24 HILTI Aktiengesellschaft Eintreibgerät
EP2886257A1 (de) 2013-12-18 2015-06-24 HILTI Aktiengesellschaft Eintreibgerät
EP2886260A1 (de) * 2013-12-19 2015-06-24 HILTI Aktiengesellschaft Eintreibgerät
EP2923798A1 (de) * 2014-03-28 2015-09-30 HILTI Aktiengesellschaft Pyrotechnisches Eintreibgerät
EP2923799A1 (de) * 2014-03-28 2015-09-30 HILTI Aktiengesellschaft Eintreibgerät
EP2923800A1 (de) * 2014-03-28 2015-09-30 HILTI Aktiengesellschaft Pyrotechnisches Eintreibgerät

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BE556294A (de) * 1956-06-08
DE1275487B (de) * 1961-06-03 1968-08-14 Walter Schulz Bolzensetzgeraet mit einem zum Eintreiben des Bolzens dienenden Kolben
US3204400A (en) * 1963-11-26 1965-09-07 United Shoe Machinery Corp Explosively-actuated stud-driving tool
GB1030978A (en) * 1964-04-27 1966-05-25 Japan Drive It Explosively actuated fastener driving tool
US3549074A (en) * 1968-05-01 1970-12-22 Olin Mathieson Power adjustment for piston tool
DE1936584A1 (de) * 1969-07-18 1971-02-04 Bettermann Elektro Ohg Brennkraftbolzensetzer
US3652003A (en) * 1970-04-06 1972-03-28 Gen Cable Corp Powder actuated tool
US3746235A (en) * 1972-01-12 1973-07-17 Olin Corp Power control for powder-actuated tool
FR2211867A5 (de) * 1972-12-26 1974-07-19 Termet Pierre
FR2218168B1 (de) * 1973-02-21 1977-02-04 Bettermann Elektro Ohg
MX143926A (es) * 1975-07-02 1981-08-04 Prospection & Inventions Mejoras en herramienta fijadora de tapones
FR2324417A1 (fr) * 1975-09-16 1977-04-15 Spit Soc Prospect Inv Techn Dispositif de maintien en position du piston d'un pistolet a tir indirect
DE2548014C2 (de) * 1975-10-27 1984-01-12 Hilti AG, 9494 Schaan Pulverkraftbetriebenes Setzgerät mit Leistungsregulierung
US4113163A (en) * 1976-09-16 1978-09-12 Marc Combette Fastening tool using caseless munition
GB2045673B (en) * 1979-04-10 1983-03-23 Prospection & Inventions Powder actuated piston tool with power adjustment
US4358041A (en) * 1980-06-12 1982-11-09 Olin Corporation Powder-actuated tool with power adjustment and angle-fire control

Also Published As

Publication number Publication date
FR2620368A1 (fr) 1989-03-17
DE3869529D1 (de) 1992-04-30
EP0308322A1 (de) 1989-03-22
ES2031617T3 (es) 1992-12-16
US4877171A (en) 1989-10-31

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