EP2465643B1 - Appareil de fixation de boulons et procédé de fonctionnement d'un appareil de fixation de boulons - Google Patents

Appareil de fixation de boulons et procédé de fonctionnement d'un appareil de fixation de boulons Download PDF

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Publication number
EP2465643B1
EP2465643B1 EP11189461.4A EP11189461A EP2465643B1 EP 2465643 B1 EP2465643 B1 EP 2465643B1 EP 11189461 A EP11189461 A EP 11189461A EP 2465643 B1 EP2465643 B1 EP 2465643B1
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EP
European Patent Office
Prior art keywords
combustion chamber
chamber volume
adjusting
stud
energy
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.)
Active
Application number
EP11189461.4A
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German (de)
English (en)
Other versions
EP2465643A3 (fr
EP2465643A2 (fr
Inventor
Tilo Dittrich
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
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Hilti AG
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Filing date
Publication date
Application filed by Hilti AG filed Critical Hilti AG
Publication of EP2465643A2 publication Critical patent/EP2465643A2/fr
Publication of EP2465643A3 publication Critical patent/EP2465643A3/fr
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Publication of EP2465643B1 publication Critical patent/EP2465643B1/fr
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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
    • 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
    • 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
    • B25C1/06—Hand-held nailing tools; Nail feeding devices operated by electric power

Definitions

  • the invention relates to a bolt setting device for setting fastening elements in a substrate, with a working piston which is abruptly translationally movable by igniting an ignitable mixture in a combustion chamber to set a fastener such as a bolt or a nail, wherein the volume of the combustion chamber is adjustable.
  • the invention further relates to a method for operating such a bolt setting device.
  • a portable combustion-powered bolt gun which has a combustion chamber for receiving an internal combustion mixture, the size of which is variable by an axial displacement of an end combustion chamber wall for adjusting the fuel gas mixture present in her lean or rich.
  • a combustion-powered setting tool with two sub-chambers is known, between which a separating element is arranged, wherein through-openings have an active opening cross-section.
  • the object of the invention is to improve the operation and / or energy efficiency of a bolt gun according to the preamble of claim 1 on.
  • the object is in a bolt setting device for setting fasteners in a substrate, with a working piston which is abruptly translationally movable by igniting an ignitable mixture in a combustion chamber to a fastener, such as a bolt or a nail to set, the volume of the combustion chamber is adjustable, achieved in that the bolt setting device comprises a control device which is connected in terms of control with an adjusting device for adjusting the combustion chamber volume and with a metering valve device for metering fuel gas.
  • the bolt gun according to the invention is preferably a portable combustion-powered bolt gun.
  • gas for example from a gas cartridge, is mixed with oxygen or air in the combustion chamber to form an ignitable mixture.
  • the bolt setting device can cover a large energy range with efficient energy utilization.
  • the load of the bolt gun during operation is significantly reduced, especially in the case of bolting with minimal energy. This prolongs the life of the bolt gun.
  • a preferred embodiment of the bolt setting tool is characterized in that the adjusting device for adjusting the combustion chamber volume comprises a motor, in particular an electric motor.
  • a stepper motor is particularly preferably used. The motor is controlled by the control device.
  • the bolt-firing device is characterized in that the engine is coupled via a transmission with an adjustable combustion chamber wall.
  • the transmission is preferably designed so that it remains in its current position when loaded by the combustion chamber pressure by self-locking.
  • the transmission is preferably designed such that the combustion chamber pressure does not act on the engine.
  • the motor is preferably mounted with the aid of damping elements in the bolt setting device.
  • a further preferred embodiment of the bolt-firing device is characterized in that the control device is connected to an operating device for energy adjustment and / or a display device which displays energy information.
  • the control device is connected to an operating device for energy adjustment and / or a display device which displays energy information.
  • the above object is achieved alternatively or additionally by a method for operating a bolt-firing device described above, wherein both the combustion chamber volume and the metering of the combustion gas supplied to the combustion chamber is adjusted by means of the control device.
  • a preferred embodiment of the method is characterized in that the current actual combustion chamber volume is detected and compared with a desired target combustion chamber volume.
  • the setting of the combustion chamber volume can be stored in the control device.
  • a further preferred exemplary embodiment of the method is characterized in that a manipulated variable for the adjusting device for adjusting the combustion chamber volume is determined from deviations between the current actual combustion chamber volume and the desired setpoint combustion chamber volume.
  • the desired combustion chamber volume is specified by the user or user.
  • the determined manipulated variable is used to control the motor, with the help of which the combustion chamber volume is adjusted.
  • a further preferred embodiment of the method is characterized in that the bolt setting device has a reset function which is triggered by a user interaction and in which the adjustment of the combustion chamber volume and / or the metering of the fuel gas supplied to the combustion chamber is / is calibrated.
  • the reset function is triggered, for example, by inserting a rechargeable battery or a gas cartridge into the bolt setting tool.
  • a further preferred embodiment of the method is characterized in that the adjusting device for adjusting the combustion chamber volume is moved against a stop during a reset. For example, when the motor is reset, the motor is turned on move a stop. Upon reaching the stop, the engine remains in the approached position, for example by blocking further adjustment or by shutting off the engine.
  • a further preferred embodiment of the method is characterized in that the current actual combustion chamber volume is detected by means of a sensor device. By comparison with the desired nominal combustion chamber volume, the necessary adjustment of the engine is determined. A reset function for position determination can be omitted.
  • a further preferred embodiment of the method is characterized in that the metering valve device is normally closed and is opened by the control device for a predetermined time, so that a defined amount of gas flows into the combustion chamber.
  • the gas is taken, for example, a gas cartridge, which is arranged interchangeable in the bolt setting device.
  • a further preferred embodiment of the method is characterized in that a desired amount of set energy, a minimum possible set energy amount and / or a maximum possible set energy amount are displayed on the bolt setting device.
  • the respective amount of set energy is preferably displayed with the aid of the previously described display device.
  • FIG. 1 an inventive bolt setting device 1 with a housing 2 is shown in a simplified longitudinal section.
  • the housing 2 comprises a handle 4, on which the bolt setting device 1 can be tacked for driving in a fastening element, which exits from the bolt setting device 1 at a bolt setting end 5 and can be driven into a ground.
  • the energy required for driving the fastening element into the ground is provided, for example, in a gas cartridge 8 in the interior of the bolt setting device 1.
  • the gas cartridge 8 is connected via an adjustable or controllable metering valve 10 with a combustion chamber or a combustion chamber 12.
  • gas from the gas canister 8 is mixed with air to form a combustible mixture which is ignited to drive a fastener such as a bolt or a nail into the ground.
  • the combustion chamber 12 is surrounded by a cylinder 14 inside the housing 2. On one side, in particular an end face of the cylinder 14, the combustion chamber 12 is closed by an adjustable combustion chamber wall or combustion chamber wall 15.
  • the combustion chamber wall 15 can be adjusted by means of an electric motor 16 via a control gear 17, as indicated by a double arrow 18. By adjusting the combustion chamber wall 15 in the direction of the double arrow 18, the size of the combustion chamber 12 can be varied in a simple manner.
  • State variables in the combustion chamber 12 and / or the position of the adjustable combustion chamber wall 15 can be detected with the aid of a sensor device 20.
  • the sensor device 20 is connected via a sensor line 21 to an electrical or electronic control device 25.
  • the control device 25 is connected via a control line 26 in terms of control with the electric motor 16. From an accumulator 28, for example a battery, the control device 25 is supplied with electrical energy. Via a further control line 29, the control device 25 is connected in terms of control with the metering valve 10.
  • the combustion chamber 12 is closed at its side facing away from the adjustable combustion chamber wall 15, in particular end face by a piston head 32 of a working piston 34.
  • the working piston 34 is guided on the one hand with the piston head 32 in a cylinder and on the other hand at its end remote from the piston head 32 in a guide sleeve.
  • the working piston 34 extends through a buffer device 38 therethrough. The movement of the working piston 34 when driving a fastener is braked by the fastener and in case of excess kinetic energy by the buffer means 38.
  • the driving of a fastener is triggered by a trigger 42 which is on the handle 4, for example, with the index finger operable.
  • the bolt setting device 1 according to the invention comprises, in addition to the trigger 42, an operating device 44 with a control element 45.
  • the bolt setting device 1 comprises, in addition to the trigger 42 and the operating device 44, a display device 55 for displaying energy information during operation of the bolt setting device 1.
  • the display device 55 is connected to the electrical or electronic control device 25 and comprises, for example, a display with which the energy information alphanumerically and / or graphically, for example, with icons, can be displayed. Alternatively or additionally, the display device 55 may have a color display.
  • the user or user of the bolt setting device 1 can specify a desired value for the driving energy.
  • the predetermined target value and / or the desired field of application for example "wood” for low energy amounts, “concrete” for medium energy amounts and “steel” for high energy amounts, is displayed by the display device 55.
  • the display device 55 displays the maximum and minimum possible driving energy that can currently be output by the bolt setting device 1. Upon reaching over or underload limits, the user is warned by a display element of the display device 55 or by a signal tone.
  • the associated combustion chamber volume and the necessary gas quantity are determined with the aid of the control device 25, preferably taking into account ambient parameters such as the ambient temperature and the ambient pressure, for a desired setpoint driving energy quantity.
  • the control device 25 outputs signals to the electric motor 16.
  • the electric motor 16 is preferably designed as a servo motor and adjusted via the adjusting 17, the combustion chamber wall 15.
  • the actuating mechanism 17 is preferably designed so that it acts at a load by the combustion chamber pressure acting on the actuating mechanism 17 via the combustion chamber wall 15, by self-locking in his current position remains.
  • the actuating gear 17 is preferably designed so that the combustion chamber pressure does not act on the electric motor 16.
  • the setting of the desired combustion chamber volume is stored in the electrical control device 25. From a deviation between a setpoint input by the user and a stored or determined position value of the combustion chamber wall 15, a manipulated variable for the electric motor 16 is determined, with which the combustion chamber volume is adapted via the setting mechanism 17.
  • the bolt gun according to the invention has a reset function in which the combustion chamber volume setting is recalibrated.
  • the reset function is started, for example, by a user interaction. For example, the insertion of the battery 28 or the gas cartridge 8 lead to a reset.
  • the combustion chamber volume adjustment for example the adjusting gear 17 or the combustion chamber wall 15, is moved against a stop.
  • the electric motor 16 can be safely driven against a stop with a sufficiently large number of steps. Upon reaching the stop of the electric motor 16 is further charged, but blocked the adjustment. As a result, the electric motor 16 remains in its stop position. Alternatively, a current-voltage characteristic of the electric motor 16 can be detected. As a result of the change in the current-voltage characteristic when reaching the stop of the electric motor 16 is turned off.
  • the current actual combustion chamber volume is detected with the aid of the sensor 20.
  • a necessary adjustment of the combustion chamber wall 15 can be determined by means of the electric motor 16 via the control gear 17.
  • the previously described reset function can be omitted.
  • the metering valve 10 is preferably electrically operated and is biased in its closed position. During operation of the bolt setting device 1, the metering valve 10 is actuated by the control device 25 and opened for a predetermined time. With the metering valve 10 open, gas can flow from the gas cartridge 8 into the combustion chamber 12. By varying the opening time, the amount of gas can be adjusted.

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

Claims (12)

  1. Appareil à enfoncer des goujons destiné à enfoncer des éléments de fixation dans un substrat, comportant un piston de travail (34) qui peut être brusquement déplacé en translation par inflammation d'un mélange combustible dans une chambre de combustion (12) afin d'enfoncer un élément de fixation tel qu'un goujon ou un clou, dans lequel le volume de la chambre de combustion (12) est réglable, caractérisé en ce que l'appareil à enfoncer des goujons (1) inclut un dispositif de commande (25) qui est relié de manière commandée à un dispositif de réglage pour réguler le volume de la chambre de combustion et à un dispositif de soupape de dosage (10) pour doser le gaz combustible.
  2. Appareil à enfoncer des goujons selon la revendication 1, caractérisé en ce que le dispositif de réglage pour réguler le volume de la chambre de combustion inclut un moteur (16), en particulier un moteur électrique.
  3. Appareil à enfoncer des goujons selon la revendication 2, caractérisé en ce que le moteur (16) est couplé à une paroi de chambre de combustion réglable (15) par l'intermédiaire d'un engrenage (17).
  4. Appareil à enfoncer des goujons selon l'une des revendications précédentes, caractérisé en ce que le dispositif de commande (25) est relié à un dispositif d'actionnement (44) pour réguler l'énergie et/ou à un dispositif d'affichage (55) qui affiche des informations sur l'énergie.
  5. Procédé pour faire fonctionner un appareil à enfoncer des goujons selon l'une des revendications précédentes, caractérisé en ce que le dispositif de commande (25) permet de réguler aussi bien le volume de chambre de combustion que le dosage du gaz de combustion fourni à la chambre de combustion (12).
  6. Procédé selon la revendication 5, caractérisé en ce que le volume réel actuel de la chambre de combustion est détecté et comparé à un volume de consigne souhaité de la chambre de combustion.
  7. Procédé selon la revendication 6, caractérisé en ce qu'une grandeur de réglage pour le dispositif de réglage est déterminée à partir d'écarts entre le volume réel actuel de la chambre de combustion et le volume de consigne souhaité de la chambre de combustion, afin de réguler le volume de la chambre de combustion.
  8. Procédé selon l'une des revendications 5 à 7, caractérisé en ce que l'appareil à enfoncer des goujons (1) comporte une fonction de réinitialisation qui est déclenchée par une interaction avec l'utilisateur et par laquelle le réglage du volume de la chambre de combustion et/ou le dosage du gaz de combustion fourni à la chambre de combustion (12) est (sont) calibré(s).
  9. Procédé selon la revendication 8, caractérisé en ce que le dispositif de réglage pour réguler le volume de la chambre de combustion est déplacé contre une butée lors d'une réinitialisation.
  10. Procédé selon la revendication 8 ou 9, caractérisé en ce que le volume réel actuel de la chambre de combustion est détecté à l'aide d'un dispositif de capteur (20).
  11. Procédé selon l'une des revendications 5 à 10, caractérisé en ce que le dispositif de soupape de dosage (10) est normalement fermé et est ouvert par le dispositif de commande (25) pendant une durée prédéterminée, de sorte qu'une quantité définie de gaz s'écoule dans la chambre de combustion (12).
  12. Procédé selon l'une des revendications 5 à 11, caractérisé en ce qu'une quantité d'énergie d'enfoncement souhaitée, une quantité d'énergie d'enfoncement la plus petite possible et/ou une quantité d'énergie d'enfoncement la plus grande possible est affichée sur l'appareil à enfoncer des goujons (1).
EP11189461.4A 2010-12-15 2011-11-17 Appareil de fixation de boulons et procédé de fonctionnement d'un appareil de fixation de boulons Active EP2465643B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010063177A DE102010063177A1 (de) 2010-12-15 2010-12-15 Bolzensetzgerät und Verfahren zum Betreiben eines Bolzensetzgerätes

Publications (3)

Publication Number Publication Date
EP2465643A2 EP2465643A2 (fr) 2012-06-20
EP2465643A3 EP2465643A3 (fr) 2015-10-14
EP2465643B1 true EP2465643B1 (fr) 2016-09-07

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EP11189461.4A Active EP2465643B1 (fr) 2010-12-15 2011-11-17 Appareil de fixation de boulons et procédé de fonctionnement d'un appareil de fixation de boulons

Country Status (8)

Country Link
US (1) US9687975B2 (fr)
EP (1) EP2465643B1 (fr)
JP (1) JP6009762B2 (fr)
CN (1) CN102528754B (fr)
AU (1) AU2011254075C1 (fr)
CA (1) CA2761540A1 (fr)
DE (1) DE102010063177A1 (fr)
TW (1) TW201240777A (fr)

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EP3034239A1 (fr) 2014-12-19 2016-06-22 HILTI Aktiengesellschaft Appareil d'enfoncement doté de chambre de combustion réglable
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EP3199301A1 (fr) * 2016-02-01 2017-08-02 HILTI Aktiengesellschaft Chambre de combustion et appareil d'enfoncement
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Also Published As

Publication number Publication date
US9687975B2 (en) 2017-06-27
JP2012125920A (ja) 2012-07-05
CA2761540A1 (fr) 2012-06-15
AU2011254075B2 (en) 2014-06-26
US20120153002A1 (en) 2012-06-21
AU2011254075A1 (en) 2012-07-05
CN102528754A (zh) 2012-07-04
TW201240777A (en) 2012-10-16
DE102010063177A1 (de) 2012-06-21
EP2465643A3 (fr) 2015-10-14
CN102528754B (zh) 2015-12-16
AU2011254075C1 (en) 2014-11-06
JP6009762B2 (ja) 2016-10-19
EP2465643A2 (fr) 2012-06-20

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