EP0805003A2 - Appareil de scellement de chevilles actionné par la poudre - Google Patents

Appareil de scellement de chevilles actionné par la poudre Download PDF

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Publication number
EP0805003A2
EP0805003A2 EP97107296A EP97107296A EP0805003A2 EP 0805003 A2 EP0805003 A2 EP 0805003A2 EP 97107296 A EP97107296 A EP 97107296A EP 97107296 A EP97107296 A EP 97107296A EP 0805003 A2 EP0805003 A2 EP 0805003A2
Authority
EP
European Patent Office
Prior art keywords
barrel
piston
piston head
bolt
section
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
EP97107296A
Other languages
German (de)
English (en)
Other versions
EP0805003B1 (fr
EP0805003A3 (fr
Inventor
Olaf Dr.-Ing. Kersten
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.)
Berner GmbH
Original Assignee
Beto-Tornado GmbH
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 Beto-Tornado GmbH filed Critical Beto-Tornado GmbH
Publication of EP0805003A2 publication Critical patent/EP0805003A2/fr
Publication of EP0805003A3 publication Critical patent/EP0805003A3/fr
Application granted granted Critical
Publication of EP0805003B1 publication Critical patent/EP0805003B1/fr
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

Definitions

  • the invention relates to a powder-operated bolt-actuating device according to the preamble of claim 1.
  • a powder-operated bolt-actuating device with a barrel guided in a barrel guide sleeve, which can be brought into operative engagement with a closure piece, the barrel guide bore of which receives a multi-part piston, the mouth-side part of which has a piston skirt and a piston head, and which faces away from the mouth Side has a cartridge storage.
  • the piston includes a so-called hammer consisting of a sleeve and a shaft, which serves to reduce the recoil occurring when the bolt is inserted so much that the device does not rise from the wall into which the bolt penetrates.
  • the circumference of the piston head can be provided with grooves which connect the spaces in front of and behind the piston head with one another.
  • it is not a repetitive device, so that the piston is not returned to its starting position by using the combustion gases.
  • the object of the invention is to provide a powder-operated bolt-actuating device according to the preamble of claim 1, which is simplified in construction as a repetitive device.
  • the combustion gases are throttled through the piston head from the back to the front, where they pass through outlet openings into an annular space between the piston skirt and barrel guide bore for the piston and build up a gas cushion there.
  • These outlet openings are surrounded by an annular spring which, when the pressure in the annular space at the front of the piston becomes greater than that at the rear, closes the outlet openings.
  • the formation of the gas cushion is supported by the air contained in the annular space and compressed by the piston movement. This gas cushion not only intercepts the piston, but also acts as a gas spring, since the pressure behind the piston drops by releasing appropriate ventilation slots in the barrel rather than the pressure of the gas cushion, so that the latter is thereby returned to its starting position.
  • Fig. 1 shows a section in section of the barrel-side part of a powder-operated bolt-actuating device in its initial position.
  • FIG 2 and 3 show the detail of the bolt setting device before the bolt setting process or at the end of the bolt setting process.
  • FIG. 4 shows an enlarged detail “A” from FIG. 2.
  • the powder-operated bolt setting device shown comprises a barrel guide sleeve 1, which mounts a sleeve-shaped insert 2 on the muzzle side.
  • the insert 2 accommodates a bolt guide 3 which is displaceable therein and which is provided with a shoulder 4 which, in the starting position of FIG. 1, bears against an inwardly directed flange section 5 of a threaded piece 6 screwed onto the barrel guide sleeve 1 on the mouth side.
  • a helical spring 9 is clamped between the flange section 5 and an outwardly directed flange section 7 of a threaded piece 8 screwed onto the bolt guide 3 prestresses the bolt guide 3 in the starting position of FIG. 1.
  • the bolt guide 3 has a bore 10 for receiving a bolt to be inserted, which is widened on the side facing away from the muzzle to slidably receive the muzzle-side end of a barrel front part 11, while the insert 2 serves as a safety stop for the barrel front part 11 when the device is without Loading a bolt should be operated.
  • a barrel rear part 12 is provided, which is inserted with an extension 13 in the barrel front part 11 and in which a piston receptacle 14 and a combustion chamber are formed adjacent to a conical barrel floor 15.
  • a cartridge bearing 16 is also provided in the rear barrel part 12 for receiving a cartridge, a narrowing bore 17 opening into the running floor 15 adjoining the cartridge bearing 16.
  • Adjacent to the cartridge store 16 is a closure piece 18 having a cartridge tape guide.
  • the rear barrel part 12 is connected via one or more tie rods 19 to the bolt guide 3 in such a way that the distance between the two can vary within predetermined limits, which are determined by an axial groove 20 in which the mouth end of the tie rod 19 can be displaced.
  • the pull rod 19 expediently has hook-shaped ends with which it is hooked into the axial groove 20 or a corresponding recess in the rear barrel part 12.
  • a piston 21 which has a piston head 22 and a piston shaft 23.
  • the piston shaft 23 is displaceable up to the mouth side of the bore 10 of the pin guide 3 (FIG. 3).
  • the piston head 22 has a section 24 which is received in the starting position by the piston receptacle 14 of the rear barrel part 12 and a section 25 with an enlarged diameter which is guided by the barrel guide bore 26 of the barrel front part 11.
  • piston 21 has a transition piece with a conical mouth-side end 27, to which a conical receptacle 28 is assigned at the mouth-side end of barrel front part 11, and an adjoining cylindrical section 29 adjacent to section 25.
  • a damping disk 30 can be arranged on the end face of the barrel front part 11 from which the piston shaft 23 projects.
  • the barrel front part 11 is provided at its end engaging with the barrel rear part 12 with a plurality of ventilation slots 31 distributed over its circumference, which are practically covered by the section 25 of the piston 21 in the starting position of FIG. 1.
  • the ventilation slots 31 open into an annular space formed by a twist 32 at the end of the barrel front part 11 and surrounded by the barrel guide sleeve 1.
  • the barrel guide sleeve 1 is provided with corresponding ventilation openings 33, so that the ventilation slots 31 can be connected to the outside.
  • An annular space 34 around the piston skirt 23 in the barrel guide bore 26 is connected to the rear of the piston head 22 via an axial bore 35 and a transverse bore 36.
  • the orifices of the transverse bore 36 in the annular space 34 are located in the cylindrical section 29 in front of the section 25 of the piston head 22 and are surrounded by an annular spring 37, which is accommodated with play by a corresponding groove in the section 29, cf. in particular Fig. 4.
  • the bolt guide 3 receives a corresponding bolt (not shown).
  • the bolt-setting tool is placed on a wall or the like in which the bolt is to be placed and is brought into the firing position by pressing against the wall (FIG. 2).
  • the pin guide 3 is pressed against the force of the coil spring 9 into the barrel guide sleeve 1 until the coil spring 9 is compressed, so that the barrel front part 11 and the barrel rear part 12 are moved backwards, so that the cartridge bearing 16 receives a cartridge and in the firing position with respect to the closure piece 18 is brought.
  • the resulting combustion gases cause the piston 21 to move abruptly forward in the barrel 11, 12 to the mouth side, but a part of the combustion gases through the axial bore 35 and the transverse bore 36 into the annular space which is reduced by the piston movement 34 flows.
  • the air in the annulus becomes with the incoming combustion gases 34 compressed until the conical end 27 reaches its receptacle 28 in the barrel front part 11 (Fig. 3).
  • the bolt is then set and the gas in the annular space 34 is compressed.
  • the gas volume compressed in the annular space 34 is built up due to the sealing of the annular space 34 by the section 25 of the piston 21 with respect to the barrel guide bore 26 and by the piston skirt 23 and the adjoining conical section 27 on the outlet side of the barrel front part 11 and catches the piston 21 from.
  • the gas volume compressed in the annular space 34 expands again due to the pressure drop on the rear of the piston and thereby returns the piston 21 to its starting position, in which the section 25 of the piston head 22 is received by the rear barrel part 12 and the section 24 of the piston head 22 is adjacent to the barrel rear part 12.
  • Leakage losses on the sealing surfaces must of course be kept so low that the gas volume acting as a gas spring in the annular space 34 can exert sufficient force to return the piston 21 to its starting position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Catching Or Destruction (AREA)
  • Fertilizing (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
  • Cleaning In General (AREA)
  • Powder Metallurgy (AREA)
EP97107296A 1996-05-03 1997-05-02 Appareil de scellement de chevilles actionné par la poudre Expired - Lifetime EP0805003B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19617672 1996-05-03
DE19617672A DE19617672C1 (de) 1996-05-03 1996-05-03 Pulverkraftbetriebenes Bolzensetzgerät
US09/094,166 US6085958A (en) 1996-05-03 1998-06-09 Explosive powder charge operated bolt-setting tool

Publications (3)

Publication Number Publication Date
EP0805003A2 true EP0805003A2 (fr) 1997-11-05
EP0805003A3 EP0805003A3 (fr) 1998-02-04
EP0805003B1 EP0805003B1 (fr) 2001-07-04

Family

ID=26025334

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97107296A Expired - Lifetime EP0805003B1 (fr) 1996-05-03 1997-05-02 Appareil de scellement de chevilles actionné par la poudre

Country Status (5)

Country Link
US (1) US6085958A (fr)
EP (1) EP0805003B1 (fr)
AT (1) ATE202738T1 (fr)
DE (2) DE19617672C1 (fr)
ES (1) ES2171240T3 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6705409B2 (en) 2001-03-22 2004-03-16 Chicago Pneumatic Tool Company Reciprocating tool having a piston retaining system
US7051528B2 (en) * 2001-08-17 2006-05-30 Yves Daunas Autonomous gas powered ram
FR2855542B1 (fr) * 2003-05-26 2005-08-05 Freyssinet Int Stup Procede de surblocage d'au moins un toron dans un bloc d'ancrage et systeme de surblocage d'au moins un toron dans un bloc d'ancrage
DE10341384B4 (de) * 2003-09-05 2016-06-23 Hilti Aktiengesellschaft Setzgerät
DE10358578A1 (de) * 2003-12-15 2005-07-14 Hilti Ag Brennkraftbetriebenes Setzgerät
US7287679B2 (en) * 2004-07-28 2007-10-30 Powers Products Iii, Llc Powder activated setting tool piston retainer arrangement and method
US7201302B2 (en) * 2004-09-01 2007-04-10 Illinois Tool Works Inc. Driver blade with auxiliary combustion chamber for combustion powered fastener-driving tool
US7328751B2 (en) * 2004-10-28 2008-02-12 Fci Americas Technology, Inc. Powder operated tool
DE102005000106B4 (de) * 2005-08-25 2014-02-27 Hilti Aktiengesellschaft Setzgerät
CA2726559C (fr) * 2009-12-30 2014-02-11 Hubbel Incorporated Outil a charge explosive et connecteur
US10926389B2 (en) * 2018-07-31 2021-02-23 Chung-Heng Lee Powder-actuated tool

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2877750A (en) * 1957-05-29 1959-03-17 Olin Mathieson Hammer and buffer mechanism
US3044071A (en) * 1960-04-06 1962-07-17 Behrend Herbert Explosive actuated tool
FR1289689A (fr) * 1960-04-06 1962-04-06 Appareil pour l'enfoncement de boulons notamment dans des maçonneries
DE1177087B (de) * 1961-04-28 1964-08-27 Tornado Gmbh Geraet zum Eintreiben von Bolzen u. dgl.
DE1503009B2 (de) * 1963-08-26 1970-07-16 Omark Industries Inc., Portland, Oreg. (V.St.A.) Abfangeinrichtung für den Schubkolben eines Brennkraftbolzensetzers
US3255942A (en) * 1964-06-12 1966-06-14 Star Expansion Ind Corp Piston tool with fastener resetting arrangement
US3297224A (en) * 1965-04-30 1967-01-10 Olin Mathieson Power actuated tool
US3496840A (en) * 1968-01-29 1970-02-24 Fastener Corp Fastener driving apparatus
US3690536A (en) * 1970-12-07 1972-09-12 Olin Corp Powder-actuated tool
US3744240A (en) * 1971-11-05 1973-07-10 Olin Corp Fastener driving tool
US3815475A (en) * 1972-11-20 1974-06-11 Signode Corp Fastener driving tool with improved piston return
AU460558B2 (en) * 1974-06-11 1975-04-11 Olin Corporation Power-actuated tool
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
DE3540953A1 (de) * 1985-11-19 1987-05-21 Hilti Ag Pulverkraftbetriebenes bolzensetzgeraet
US4753151A (en) * 1986-06-27 1988-06-28 Lockheed Corporation Self-retracting ballistic actuator system
FR2608493B1 (fr) * 1986-12-23 1994-09-02 Prospection & Inventions Appareil de scellement a tir indirect
DE3819813A1 (de) * 1988-06-10 1989-12-14 Hilti Ag Pulverkraftbetriebenes setzgeraet
DE4022674A1 (de) * 1990-07-17 1992-01-23 Hilti Ag Pulverkraftbetriebenes setzgeraet
DE4313504A1 (de) * 1993-04-24 1994-10-27 Hilti Ag Pulverkraftbetriebenes Setzgerät
FR2746690B1 (fr) * 1996-03-26 1998-05-29 Spit Soc Prospect Inv Techn Appareil d'entrainement de tampon par masselotte a retour automatique en position du tir

Also Published As

Publication number Publication date
ATE202738T1 (de) 2001-07-15
DE59703936D1 (de) 2001-08-09
EP0805003B1 (fr) 2001-07-04
EP0805003A3 (fr) 1998-02-04
US6085958A (en) 2000-07-11
ES2171240T3 (es) 2002-09-01
DE19617672C1 (de) 1997-10-09

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