EP0638395A1 - Outil d'enfoncement actionné par poudre - Google Patents

Outil d'enfoncement actionné par poudre Download PDF

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Publication number
EP0638395A1
EP0638395A1 EP94810215A EP94810215A EP0638395A1 EP 0638395 A1 EP0638395 A1 EP 0638395A1 EP 94810215 A EP94810215 A EP 94810215A EP 94810215 A EP94810215 A EP 94810215A EP 0638395 A1 EP0638395 A1 EP 0638395A1
Authority
EP
European Patent Office
Prior art keywords
piston
guide
channel
carrier
setting direction
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
EP94810215A
Other languages
German (de)
English (en)
Other versions
EP0638395B1 (fr
Inventor
Peter Jochum
Markus Frommelt
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.)
Hilti AG
Original Assignee
Hilti AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hilti AG filed Critical Hilti AG
Publication of EP0638395A1 publication Critical patent/EP0638395A1/fr
Application granted granted Critical
Publication of EP0638395B1 publication Critical patent/EP0638395B1/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 setting tool with a piston guide for a piston, which can be driven by means of propellant gases on a propellant charge from a rear starting position to a front end position, a carrier having a cartridge holder and a housing part surrounding the piston guide at a radial distance, with the piston guide and housing part a channel opening with the cartridge receptacle is provided via an opening in the piston guide into the guide bore for the piston.
  • a piston is driven by the propellant gases of a propellant charge that comes to ignition from a rear starting position into a front end position. Before the ignition, the propellant charge is fed to a cartridge holder. Before reaching its front end position, the piston acts on bolts, nails and the like. Fasteners which are driven into hard receiving materials such as concrete, metal and the like.
  • a recirculation for the piston using the propellant gases is known.
  • a piston guide serving to guide the piston is surrounded at a radial distance by a housing part.
  • a carrier with a cartridge holder connects to the piston guide.
  • a channel which is connected to the cartridge receptacle and which, in the area on the setting direction side, opens into the guide bore for the piston via an opening in the piston guide.
  • the propellant gases act only indirectly, ie via an insert on the piston.
  • This insert is used to close the channel when the propellant charge is ignited.
  • propellant gases can get into the guide bore in front of the guide area of the piston, where they are compressed and then drive the piston back into the starting position with relaxation.
  • the insert must also be driven back into its rear starting position so that the channel is closed again for the next driving-in process.
  • the difficulty here is that the rooms have to be adequately ventilated in order to enable both the piston and the insert to assume their rear starting position.
  • the invention has for its object to provide a powder-powered setting tool which has a piston return acting by using the propellant gases, is simple in construction and is susceptible to failure by avoiding parts susceptible to contamination.
  • the object is achieved in that the holder of the setting tool has a closable passage connecting the channel to the atmosphere and in the channel a closable valve device for forming a setting direction side Areas of the channel and the guide bore, which are closed to the atmosphere, are provided.
  • the effect of the recirculation according to the invention is such that when the propellant charge is ignited, the channel is still closed to the atmosphere, but is connected to the guide bore immediately after the piston has started to move.
  • the result of this is that the propellant gases pass through the channel into the region of the guide bore on the setting direction immediately after they have set the piston in motion by acting on it.
  • the valve device is closed, so that a common storage space that is closed to the atmosphere is created.
  • the propellant gases are compressed by the piston driven towards the front end position. With the expansion of these compressed propellant gases, the piston is then driven back towards its rear starting position.
  • the area behind the valve device has been opened to the atmosphere via the passage provided in the support according to the invention.
  • the area of the guide bore lying opposite to the setting direction is also completely vented, so that the piston can be driven without any resistance to its rear starting position.
  • the carrier and the piston guide are preferably parts which can be displaced relative to one another. This results in a great constructive advantage in that the valve device can expediently be closed against the setting direction with relative axial displacement of the carrier relative to the piston guide. After the cartridge holder is in the carrier, this relative displacement takes place automatically, ie under the influence of the propellant gases, which spread out equally on all sides thus, in addition to acting on the piston in the setting direction, also act on the carrier against the setting direction and drive it against the setting direction.
  • the valve device is preferably cross-sectional constrictions within the channel, which are brought about by suitable design of both the carrier and the piston guide.
  • the one closure part of the valve device can expediently be formed by the piston guide, which cooperates with the carrier after relative displacement and thus closes the channel.
  • the relative displacement between the carrier and the piston guide is also preferably used for the actuation of the passage provided in the carrier, which creates a connection to the atmosphere.
  • This passage can preferably be closed with an axial relative displacement of the carrier relative to the piston guide in the setting direction. With a suitable arrangement of this passage, it can be ensured in a simple manner that the channel is only connected to the atmosphere in terms of time when the valve device is closed, so that the closed storage space which is decisive according to the invention is created.
  • the passage is a simple measure in the carrier, it can expediently be actuated in such a way that the piston guide forms a closure part. No special measures are necessary on the piston guide, it is sufficient if a corresponding guide area comes into connection with the passage.
  • the channel to the cartridge receptacle is preferably closed off by the piston located in the rear initial position. This measure is preferably carried out in such a way that the piston in its rear starting position has run over the connection of the channel to the cartridge receptacle and the piston releases this connection again immediately after it has started to move.
  • a simple structural design of the setting tool according to the invention can be achieved if the support and the housing part are expediently connected to form a unit which can be displaced axially relative to the piston guide.
  • connecting in particular is not understood to mean a one-piece design, since, for other reasons, a decoupling of these two parts can also be advantageous.
  • a piston 1 is mounted within a piston guide 2. Contrary to the setting direction, the piston guide 2 is surrounded by a carrier 3.
  • This carrier 3 has a cartridge receptacle 4 which contains a bore 4a which serves for the passage of the propellant gases which arise when a propellant charge 5 is ignited. Furthermore, the carrier is provided with a passage 3a.
  • the piston guide 2 is surrounded by a housing part 6 at a radial distance. This housing part 6 is connected to the carrier 3. Between the housing part 6 and the piston guide 2, a channel 7 is provided which, as shown in particular in FIG. 2, is connected to the cartridge receptacle 4. To connect the channel 7 with the guide bore 2a for the piston 1, an opening 2c is provided in the piston guide 2.
  • a multi-part guide device is also connected to the piston guide 2.
  • This guide device essentially consists of an element guide 8 and a guide bushing 9.
  • the element guide 8 serves to receive and guide the fastening elements to be driven.
  • the guide bush 9 serves to mount a brake device for the piston 1, this brake device consisting of balls 10 and a spring cage 11.
  • a bushing 12 is also connected to the sleeve 9 against the setting direction.
  • Fig. 1 shows the piston 1 in its rear starting position. In this starting position, the setting tool is placed on the receiving material, not shown in the drawing, into which a fastening element, also not shown in the drawing, is to be driven. This fastener is stored within the element guide 8.
  • FIG. 1 shows how the channel 7 to the cartridge receptacle 4 is closed by the piston 1.
  • the valve device of the channel 7 is open, this valve device consisting of a diameter widening 2b of the piston guide 2 and a narrowing 3b of the carrier 3.
  • the passage 3a is also closed by the piston guide 2, so that the channel 7 is not connected to the atmosphere.
  • the propellant gases formed pass through the bore 4a of the cartridge receptacle 4 and drive the piston 1 against its front end position, as shown in FIG. 2.
  • the channel 7 is connected to the cartridge receptacle 4, so that propellant gases pass through the opening 7c into the guide bore 2a via the channel 7.
  • the passage 3a is still closed by the piston guide 2, so that the channel 7 is not connected to the atmosphere.
  • the remaining, for example unburned, portions of the propellant charge 5 can pass through the passage 3a and do not lead to device pollution.
  • the areas of the channel 7 on the setting direction and the guide bore 2a have one opposite because of the closed valve device created the atmosphere closed storage space within which the propellant gases have been compressed under the action of the piston 1.
  • These compressed propellant gases subsequently relax and drive the piston 1 back into its rear starting position against the setting direction, the space adjoining the piston 1 from the piston guide 2 and from the carrier 3 against the setting direction being vented to the atmosphere via the passage 3a .
  • the position of the decisive device parts shown in FIG. 1 is again reached, a new driving-in process being able to be carried out by feeding a new cartridge 5 into the cartridge holder 4.
  • the relative displacement of the carrier 3 takes place together with the housing part 6 connected to it relative to the piston guide 2 together with the associated guide device, which essentially consists of element guide 8 and guide bush 9.
  • the braking device consisting of balls 10 and spring cage 11 has the task of braking and releasing the piston 1 during the driving-in process when it is driven back into its rear starting position by releasing the compressed propellant gases.
  • the braking takes place when the balls 10 are driven into the spring cage 11 during the driving-in process and thus an increased friction acts on the piston 1. This friction is eliminated when the piston 1 is moved counter to the setting direction, so that the balls 10 are released from the spring cage 11.
  • the damping element 12 has the task of catching the piston 1 when it is driven in the setting direction, for example as a result of a lack of receiving material, and in such a failing application case, excessive stresses on the device parts which are destructive can be avoided thanks to the damping element 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Lock And Its Accessories (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Disintegrating Or Milling (AREA)
  • Gyroscopes (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Window Of Vehicle (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Detergent Compositions (AREA)
  • Vehicle Body Suspensions (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Fertilizing (AREA)
  • Catching Or Destruction (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Nozzles (AREA)
  • Details Of Valves (AREA)
EP94810215A 1993-04-24 1994-04-18 Outil d'enfoncement actionné par poudre Expired - Lifetime EP0638395B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4313504 1993-04-24
DE4313504A DE4313504A1 (de) 1993-04-24 1993-04-24 Pulverkraftbetriebenes Setzgerät

Publications (2)

Publication Number Publication Date
EP0638395A1 true EP0638395A1 (fr) 1995-02-15
EP0638395B1 EP0638395B1 (fr) 1998-07-08

Family

ID=6486310

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94810215A Expired - Lifetime EP0638395B1 (fr) 1993-04-24 1994-04-18 Outil d'enfoncement actionné par poudre

Country Status (16)

Country Link
US (1) US5538172A (fr)
EP (1) EP0638395B1 (fr)
JP (1) JPH06320443A (fr)
KR (1) KR100305976B1 (fr)
CN (1) CN1045408C (fr)
AT (1) ATE168060T1 (fr)
AU (1) AU676008B2 (fr)
CA (1) CA2121619C (fr)
DE (2) DE4313504A1 (fr)
DK (1) DK0638395T3 (fr)
ES (1) ES2118353T3 (fr)
FI (1) FI103264B1 (fr)
HU (1) HU216486B (fr)
NO (1) NO304141B1 (fr)
PL (1) PL173242B1 (fr)
TW (1) TW240189B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6123242A (en) * 1996-05-03 2000-09-26 Berner Gmbh Explosive powder charge operated bolt-setting tool
CN1061584C (zh) * 1995-12-21 2001-02-07 希尔蒂股份公司 火药力工作的射钉枪

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5553764A (en) * 1995-06-05 1996-09-10 Sencorp Gas return cylinder for a reciprocating driver in a tool
US5606794A (en) * 1995-07-06 1997-03-04 Sigma Tool & Machine Variable impact tee-nut insertion machine
DE19532411A1 (de) * 1995-09-01 1997-03-06 Hilti Ag Pulverkraftbetriebenes Setzgerät
FR2742375B1 (fr) * 1995-12-13 1998-02-13 Spit Soc Prospect Inv Techn Appareil de scellement de tampons de fixation
DE19548870A1 (de) * 1995-12-27 1997-07-03 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
DE19617672C1 (de) * 1996-05-03 1997-10-09 Beto Tornado Gmbh Pulverkraftbetriebenes Bolzensetzgerät
DE19755730A1 (de) * 1997-12-15 1999-06-17 Hilti Ag Bolzensetzgerät
US6092710A (en) * 1998-06-09 2000-07-25 Berner Gmbh Explosive powder charge operated bolt-setting tool
US6059162A (en) * 1998-10-16 2000-05-09 Illinois Tool Works Inc. Exhaust baffle and spring assisted reset and dampener for powder actuated tool
AUPP770598A0 (en) * 1998-12-14 1999-01-14 Ramset Fasteners (Aust.) Pty. Limited Power actuated tools
AUPQ292499A0 (en) * 1999-09-17 1999-10-07 Cetram Pty Limited Power actuated tools
DE19962696C1 (de) * 1999-12-23 2001-06-07 Hilti Ag Brennkraftbetriebenes Arbeitsgerät mit Bremseinrichtung für seinen Kolben
US20030124474A1 (en) * 2000-06-07 2003-07-03 David Elliott Self extinguishing candles and method of making same
DE10105882C2 (de) * 2001-02-09 2002-12-05 Hilti Ag Kolbenhalterung
DE10105879C2 (de) * 2001-02-09 2002-12-12 Hilti Ag Kolbenhalterung
DE10105880C2 (de) * 2001-02-09 2003-04-10 Hilti Ag Kolbenhalterung
DE10105885C1 (de) * 2001-02-09 2002-06-13 Hilti Ag Kolbenhalterung
US7051528B2 (en) * 2001-08-17 2006-05-30 Yves Daunas Autonomous gas powered ram
CA2355504A1 (fr) * 2001-08-17 2003-02-17 Yves Daunas Piston autonome a gaz
US6679411B2 (en) * 2001-12-21 2004-01-20 Illinois Tool Works Inc. Piston retention system for a fastener driving tool
DE10254964B4 (de) * 2002-11-26 2014-02-13 Hilti Aktiengesellschaft Setzgerät
FR2848489B1 (fr) * 2002-12-11 2006-02-03 Prospection & Inventions Appareil de scellement a tir indirect
DE102005000113B4 (de) * 2005-09-13 2014-03-27 Hilti Aktiengesellschaft Setzgerät
DE102005000114A1 (de) * 2005-09-13 2007-03-15 Hilti Ag Setzgerät
US7753230B2 (en) * 2007-12-20 2010-07-13 Mikio Kusano Nut feeder
DE102010036723A1 (de) * 2010-07-29 2012-02-02 Fischerwerke Gmbh & Co. Kg Brennkraftbetriebenes Setzgerät
CN203092484U (zh) * 2013-02-22 2013-07-31 郭景辉 一种用于射钉枪的卸力装置
CN107627261A (zh) * 2017-10-31 2018-01-26 丘利锋 一种消音性能好的连发式射钉器

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3744240A (en) * 1971-11-05 1973-07-10 Olin Corp Fastener driving tool
EP0223740A2 (fr) * 1985-11-19 1987-05-27 HILTI Aktiengesellschaft Outil de scellement actionné par de la poudre

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2294808A1 (fr) * 1974-12-20 1976-07-16 Hilti Ag Appareil de scellement de chevilles a poudre
US4196834A (en) * 1978-12-11 1980-04-08 Olin Corporation Noise reducer for powder actuated fastening tool
DE3427616A1 (de) * 1984-07-26 1986-01-30 Hilti Ag, Schaan Pulverkraftbetriebenes bolzensetzgeraet

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3744240A (en) * 1971-11-05 1973-07-10 Olin Corp Fastener driving tool
EP0223740A2 (fr) * 1985-11-19 1987-05-27 HILTI Aktiengesellschaft Outil de scellement actionné par de la poudre

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1061584C (zh) * 1995-12-21 2001-02-07 希尔蒂股份公司 火药力工作的射钉枪
US6123242A (en) * 1996-05-03 2000-09-26 Berner Gmbh Explosive powder charge operated bolt-setting tool

Also Published As

Publication number Publication date
NO941480L (no) 1994-10-25
FI103264B (fi) 1999-05-31
EP0638395B1 (fr) 1998-07-08
JPH06320443A (ja) 1994-11-22
FI941849A (fi) 1994-10-25
CA2121619A1 (fr) 1994-10-25
PL173242B1 (pl) 1998-02-27
KR100305976B1 (ko) 2001-11-30
DE59406393D1 (de) 1998-08-13
CN1095982A (zh) 1994-12-07
AU676008B2 (en) 1997-02-27
DK0638395T3 (da) 1999-04-19
ATE168060T1 (de) 1998-07-15
TW240189B (fr) 1995-02-11
FI941849A0 (fi) 1994-04-21
NO941480D0 (no) 1994-04-22
HU9401169D0 (en) 1994-07-28
ES2118353T3 (es) 1998-09-16
DE4313504A1 (de) 1994-10-27
FI103264B1 (fi) 1999-05-31
HUT69246A (en) 1995-08-28
HU216486B (hu) 1999-07-28
AU5949894A (en) 1994-10-27
NO304141B1 (no) 1998-11-02
US5538172A (en) 1996-07-23
CN1045408C (zh) 1999-10-06
CA2121619C (fr) 2001-04-17

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