EP3181295A1 - Cloueur entraine par combustible - Google Patents

Cloueur entraine par combustible Download PDF

Info

Publication number
EP3181295A1
EP3181295A1 EP15201045.0A EP15201045A EP3181295A1 EP 3181295 A1 EP3181295 A1 EP 3181295A1 EP 15201045 A EP15201045 A EP 15201045A EP 3181295 A1 EP3181295 A1 EP 3181295A1
Authority
EP
European Patent Office
Prior art keywords
piston
driving
tacker
piezoelectric actuator
combustion chamber
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.)
Withdrawn
Application number
EP15201045.0A
Other languages
German (de)
English (en)
Inventor
Dominik Schmidt
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
Priority to EP15201045.0A priority Critical patent/EP3181295A1/fr
Priority to TW105137080A priority patent/TWI630991B/zh
Priority to US15/781,738 priority patent/US20180370003A1/en
Priority to EP16806130.7A priority patent/EP3389930B1/fr
Priority to PCT/EP2016/079976 priority patent/WO2017102469A1/fr
Publication of EP3181295A1 publication Critical patent/EP3181295A1/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • 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
    • B25C1/008—Safety devices

Definitions

  • the invention relates to a tacker, in particular a hand-held tacker, according to the preamble of claim 1.
  • the invention also relates to an operating method for a tacker according to the features of claim 10.
  • the invention relates to tackers in which a driving piston is accelerated by a rapidly expanding gas as part of a combustion process.
  • Conventional types of such devices use powder cartridges or an ignitable fuel gas mixture.
  • Drive-in devices of such types are regularly designed for high drive-in energies.
  • EP 1 987 924 A1 describes a rechargeable, fuel gas powered tacker, in which a drive piston is held by means of a holding device in a starting position.
  • the holding device comprises a ball head, which engages in a groove formed on the driving piston in the radial direction and is acted upon by a force.
  • the driving piston can be released by activating an electromagnetic coil.
  • the holding device serves to support the piston against a boost pressure of the fuel gas in the combustion chamber, which is already present before ignition.
  • a piezoactuator is understood to mean any component which uses the inverse piezoelectric effect of a change in length by applying a voltage to a piezoelectric solid.
  • the change in length is used in the sense of a mechanical actuator, by which a state of the piston holder is changed.
  • a release of the piston can be carried out preferably by switching on, but if necessary also by switching off the voltage.
  • Frequently used piezoactuators comprise a piezoceramic as a piezoelectrically active solid and are usually composed of a plurality of contacted layers.
  • the piston holder of a tacker preferably comprises two or more piezo actuators distributed around the circumference of the piston in order to ensure a low-distortion and particularly secure mounting.
  • the piston holder comprises an actuatable by means of the piezoelectric actuator latch member for preferably positive locking of the driving piston.
  • a locking member in particular in conjunction with a positive retention, allows a secure mounting of the piston even with high pressure.
  • the piezoelectric actuator acts on the locking member via a transmission. This allows a relative to the piezoelectric actuator significantly increased stroke and thus an adaptation to the mechanical and thermal tolerances usual Eintreibkolben.
  • the transmission makes a clear translation of the change in length of the piezoelectric actuator, preferably by a factor of more than two.
  • the piezoelectric actuator is supported against the force of a biasing spring, whereby a play-free and accurate function of the piston holder is made possible.
  • a release of the drive piston by means of the piezoelectric actuator takes place with a time delay after an ignition process. This allows the targeted release of the drive piston after an already established pressure buildup, whereby the energy transfer to the drive piston and thus the achievable set energy can be increased.
  • the temporal accuracy and the Speed of release are necessary very high and can be achieved by the use of piezoelectric actuators according to the invention.
  • the release preferably takes place as a function of a pressure threshold, a temperature threshold or a defined time interval.
  • the time delay is also adjustable adjustable.
  • the change of the delay can be made by automatic or manual preselection of a value. It may also be provided for an automatic tracking of the delay as a function of the expiry of a previous drive-in operation.
  • this optimizes the drive-in process so that the highest possible set energy can be achieved and / or the set energy can be set by selecting the delay.
  • the combustion chamber can be filled with an ignitable fuel gas mixture.
  • an overpressure of the fuel gas mixture in the combustion chamber can be generated by means of a charging member.
  • an overpressure of the fuel gas mixture is understood to be an increased pressure to increase the driving energy.
  • the pressure of the fuel gas mixture is usually slightly above an ambient pressure, since the pressurized fuel gas is added to the air under atmospheric pressure in the combustion chamber. This is only a slight increase in pressure.
  • An overpressure according to the invention is preferably at least 100 mbar, more preferably at least 200 mbar above atmospheric pressure.
  • the resulting driving energy can be selectively changed and in particular a high maximum driving energy can be achieved.
  • the process according to the invention is preferably carried out by means of a driving-in device according to the invention described above.
  • the tacker off Fig. 1 is a hand-held device, comprising a housing 1 and a combustion chamber 2 received therein with a combustion chamber wall. Adjacent to the combustion chamber 2 is a cylinder 3 with a guided therein driving piston 4.
  • the driving piston 4 comprises a driving ram 5 for driving a nail member (not shown) into a workpiece.
  • An ignitable fuel gas mixture is presently introduced by means of a fuel gas storage 6 in the combustion chamber 2.
  • the fuel gas mixture is compressed by means of a charging member 7 to an overpressure.
  • the charging member is designed as an electrically driven and powered by a battery 8 compressor. In other embodiments, charging may also be by means of a powered reset of the driving piston 4 or otherwise.
  • the fuel gas is introduced via a metering valve 9 from the fuel gas storage 6 into the air of the combustion chamber 2.
  • the fuel gas injection can take place in the not yet compressed, partially compressed or completely compressed air.
  • an ignition of the fuel gas mixture can then be triggered via a spark plug 14 via a manually operated trigger 11, so that the driving piston 4 is driven forward and drives the nail member (not shown) out of a magazine 12 into the workpiece via the driving ram 5.
  • the exhaust gases of the ignited and expanded fuel gas may enter the outer space via outlet openings 13 towards the end of the travel of the drive piston.
  • the drive piston hits at the end of its travel on stop buffer 15 (shown in FIG Fig. 2 ). In a provision of the piston, we limited its way from an upper stop 16 at the output of the combustion chamber 2.
  • the piston holder 10 comprises a plurality of, in the present case two, similarly constructed holding members 17, which are distributed around the circumference of the cylinder 3.
  • Each of the holding members has a locking member 18 that is substantially radially movable relative to the cylinder.
  • the locking member 18 each has a bevel 18a on the side facing away from the held piston.
  • the drive piston can push back the latch member 18a by overrunning the bevel against the force of a spring 19.
  • After passing over the latch member 18 each snaps radially back into the cylinder 3, so that the non-tapered side of the locking member 18 holds the driving piston positively against the pressure in the combustion chamber 2 in the starting position.
  • the holding members 17 each include a housing 20 in which the locking member 18 is slidably mounted.
  • a piezoelectric actuator 21 is accommodated in the housing, which is mechanically coupled to the locking member 18 via a gearbox 22.
  • the gearbox 22 is shown schematically as a lever 24 mounted in a pivot point 23.
  • a first end lever 24 engages the locking member 18 and a second, opposite end of the lever 24 is supported on the piezoelectric actuator 21 and on the spring 19.
  • the spring 19 presses the lever 24 against the piezoelectric actuator and in the direction of a closing movement of the locking member 18th
  • the piezoelectric actuator 21 can be acted upon by means of a voltage source 25 with a voltage.
  • the voltage source 25 is supplied centrally from the battery 8 with energy, but generates a sufficiently high voltage for the deflection of the piezoelectric actuator 21.
  • the electrical components of the tacker such as the battery 8 and the voltage source 25 with an electronic control unit (not shown) of the tacker connected.
  • Fig. 3 shows one of the support members 17 in a closed position in which the locking member 18 is extended beyond the wall of the cylinder 3 and the drive piston 4 holds. In this position, the piezoelectric actuator 21 is not subjected to voltage and shortened accordingly.
  • Fig. 4 shows the holding member 17 upon application of a voltage through the voltage source 25.
  • the piezoelectric actuator 21 has become longer due to the inverse piezo effect and presses the lever 24 against the spring 19 a.
  • the locking member 18 is withdrawn behind the wall of the cylinder 3 and gives the driving piston 4 free.
  • the piezoelectric actuators 21 are connected to electrical voltage and the piston holder releases the driving piston within a very short period of time. Subsequently, the driving piston is accelerated by the applied pressure and the further pressure increase by the progressive combustion process.
  • a piston holder according to the invention can also be advantageously used without a defined increase in pressure, so that a piston release which is simultaneous with the ignition of the fuel gas mixture can also be provided.
  • a pressure increase was defined by the choice of the given time delay or delay, which means a corresponding approximation and requires sufficient reproducibility of the combustion process.
  • sensory variables such as pressure and / or temperature in the combustion chamber 2 can serve as a criterion for the release of the piston holder.
  • the predetermined period of time and / or corresponding threshold values of measured variables can be changed in meaningful ways in order to vary the driving-in energy as required.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Portable Nailing Machines And Staplers (AREA)
EP15201045.0A 2015-12-18 2015-12-18 Cloueur entraine par combustible Withdrawn EP3181295A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP15201045.0A EP3181295A1 (fr) 2015-12-18 2015-12-18 Cloueur entraine par combustible
TW105137080A TWI630991B (zh) 2015-12-18 2016-11-14 燃氣驅動的打入設備及操作打入設備的方法
US15/781,738 US20180370003A1 (en) 2015-12-18 2016-12-07 Driver device operated by means of combustible gas
EP16806130.7A EP3389930B1 (fr) 2015-12-18 2016-12-07 Cloueur entraîné par combustible
PCT/EP2016/079976 WO2017102469A1 (fr) 2015-12-18 2016-12-07 Appareil d'enfoncement fonctionnant au gaz combustible

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15201045.0A EP3181295A1 (fr) 2015-12-18 2015-12-18 Cloueur entraine par combustible

Publications (1)

Publication Number Publication Date
EP3181295A1 true EP3181295A1 (fr) 2017-06-21

Family

ID=54936876

Family Applications (2)

Application Number Title Priority Date Filing Date
EP15201045.0A Withdrawn EP3181295A1 (fr) 2015-12-18 2015-12-18 Cloueur entraine par combustible
EP16806130.7A Active EP3389930B1 (fr) 2015-12-18 2016-12-07 Cloueur entraîné par combustible

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP16806130.7A Active EP3389930B1 (fr) 2015-12-18 2016-12-07 Cloueur entraîné par combustible

Country Status (4)

Country Link
US (1) US20180370003A1 (fr)
EP (2) EP3181295A1 (fr)
TW (1) TWI630991B (fr)
WO (1) WO2017102469A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11819989B2 (en) 2020-07-07 2023-11-21 Techtronic Cordless Gp Powered fastener driver
CA3167425A1 (fr) 2021-07-16 2023-01-16 Techtronic Cordless Gp Pose-attaches electrique

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0123717A2 (fr) * 1983-05-02 1984-11-07 Signode Corporation Outil portable de fixation entraîné par gaz
US20040108353A1 (en) * 2002-11-19 2004-06-10 Iwan Wolf Combustion-engined setting tool
US20080210734A1 (en) * 2004-03-31 2008-09-04 Jpf Works Co., Ltd. Portable Type Fastener Driving Tool
EP1987924A1 (fr) 2006-02-23 2008-11-05 Max Co., Ltd. Structure de retenue de piston de martelage dans une machine a clouer a gaz

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0325421Y2 (fr) * 1986-03-13 1991-06-03
US4729056A (en) * 1986-10-02 1988-03-01 Motorola, Inc. Solenoid driver control circuit with initial boost voltage
JPH0410704Y2 (fr) * 1987-04-20 1992-03-17
DE4032204C2 (de) * 1990-10-11 1999-10-21 Hilti Ag Setzgerät für Befestigungselemente
DE10222338A1 (de) * 2002-05-21 2003-12-04 Hilti Ag Brennkraftbetriebenes Setzgerät
JP3948351B2 (ja) * 2002-06-05 2007-07-25 マックス株式会社 圧縮空気駆動釘打機のピストンストップ機構
DE10260702B4 (de) * 2002-12-23 2014-01-30 Hilti Aktiengesellschaft Brennkraftbetriebenes Setzgerät
DE10318554B4 (de) * 2003-04-24 2005-03-24 Hilti Ag Brennkraftbetriebenes Setzgerät
EP1529601B1 (fr) * 2003-11-07 2007-10-31 Makita Corporation Outil motorisé par combustion
US7163134B2 (en) * 2004-02-09 2007-01-16 Illinois Tool Works Inc. Repetitive cycle tool logic and mode indicator for combustion powered fastener-driving tool
DE102004043955B4 (de) * 2004-09-11 2006-07-20 Hilti Ag Brennkraftbetriebenes Setzgerät
JP4930672B2 (ja) * 2005-08-09 2012-05-16 マックス株式会社 ガス燃焼式打込み工具のファスナー送り機構
US20090152316A1 (en) * 2005-11-17 2009-06-18 Moeller Larry M Selectable firing mode with electromechanical lockout for combustion-powered fastener -driving tool
JP5011888B2 (ja) * 2006-08-22 2012-08-29 マックス株式会社 ガス燃焼式打込み工具
JP4899840B2 (ja) * 2006-12-05 2012-03-21 マックス株式会社 ガス燃焼式打込み工具
JP5516185B2 (ja) * 2010-07-26 2014-06-11 マックス株式会社 ガス燃焼式打ち込み工具
JP5447285B2 (ja) * 2010-08-12 2014-03-19 マックス株式会社 ガス燃焼式打ち込み工具

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0123717A2 (fr) * 1983-05-02 1984-11-07 Signode Corporation Outil portable de fixation entraîné par gaz
US20040108353A1 (en) * 2002-11-19 2004-06-10 Iwan Wolf Combustion-engined setting tool
US20080210734A1 (en) * 2004-03-31 2008-09-04 Jpf Works Co., Ltd. Portable Type Fastener Driving Tool
EP1987924A1 (fr) 2006-02-23 2008-11-05 Max Co., Ltd. Structure de retenue de piston de martelage dans une machine a clouer a gaz

Also Published As

Publication number Publication date
EP3389930B1 (fr) 2020-06-24
WO2017102469A1 (fr) 2017-06-22
TW201722643A (zh) 2017-07-01
US20180370003A1 (en) 2018-12-27
EP3389930A1 (fr) 2018-10-24
TWI630991B (zh) 2018-08-01

Similar Documents

Publication Publication Date Title
EP3349945B1 (fr) Appareil d'enfoncement entraîné par combustible doté d'une articulation de soupape
DE102007000226A1 (de) Handgeführtes Eintreibgerät
EP2465641B1 (fr) Outil électrique de fixation de boulons
EP2650087A2 (fr) Appareil d'enfoncement
EP3046732B1 (fr) Dispositif de fixation avec accumulateur pneumatique chauffé
DE102011007703A1 (de) Eintreibgerät
WO2019211264A1 (fr) Cloueuse manuelle et entraînement
EP3389930B1 (fr) Cloueur entraîné par combustible
EP3349944B1 (fr) Appareil d'enfoncement entraîné par combustible doté d'une articulation de soupape
EP3349946B1 (fr) Cloueur entraine par combustible comprenant un magazin
DE10259567A1 (de) Brennkraftbetriebenes Setzgerät
DE102010061942A1 (de) Eintreibgerät
EP3122516A1 (fr) Appareil d'enfoncement pyrotechnique
DE3005919C2 (fr)
DE1923911A1 (de) Bolzensetzgeraet
EP3393719B1 (fr) Cloueur a poudre
AT523156B1 (de) Elektrisch-mechanisch betriebenes Werkzeug zum Eintreiben von Befestigungsmitteln
DE2919966C2 (de) Halterung eines Feststofftreibsatzes
EP3230012B1 (fr) Appareil de pose et procédé de fonctionnement d'un appareil de pose
WO2015155067A1 (fr) Appareil de pose manuel ou semi-stationnaire
EP4201597A1 (fr) Dispositif et procédé d'enfoncement
DE102010061947A1 (de) Eintreibgerät

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20171222