EP3898120B1 - Appareil de scellement et procédé de fonctionnement d'un appareil de scellement - Google Patents

Appareil de scellement et procédé de fonctionnement d'un appareil de scellement Download PDF

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Publication number
EP3898120B1
EP3898120B1 EP19808602.7A EP19808602A EP3898120B1 EP 3898120 B1 EP3898120 B1 EP 3898120B1 EP 19808602 A EP19808602 A EP 19808602A EP 3898120 B1 EP3898120 B1 EP 3898120B1
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EP
European Patent Office
Prior art keywords
driving
energy
fastening element
control unit
nail gun
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
EP19808602.7A
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German (de)
English (en)
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EP3898120A1 (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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Publication date
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Publication of EP3898120A1 publication Critical patent/EP3898120A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • 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
    • 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
    • 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
    • B25C1/04—Hand-held nailing tools; Nail feeding devices operated by fluid pressure, e.g. by air pressure
    • B25C1/047—Mechanical details

Definitions

  • the invention relates to a bolt driver for driving fasteners into a substrate in a driving direction.
  • the invention also relates to a method for operating such a bolt driver.
  • a device according to the preamble of claim 1 and a method according to the preamble of claim 11 is from EP 2 656 974 A2 famous.
  • Such bolt driving devices usually include a driving piston that can be driven in a setting direction in order to push a fastener into the ground.
  • a driving piston that can be driven in a setting direction in order to push a fastener into the ground.
  • a fastening element cannot be driven into the subsoil as desired, but is slowed down or deflected, for example, by harder components of the subsoil. This can lead to setting failures in which the fastening element and/or the substrate are damaged.
  • a working device which comprises a drive-in energy information device.
  • the driving-in energy information device conveys information about the driving-in energy that was delivered during a previous driving-in process.
  • An actuator is connected to the driving-energy information device in a control-technical functional relationship in order to regulate the amount of driving-in energy to be delivered during a current driving-in process.
  • the object of the invention is to improve the setting quality of a bolt driver.
  • the object is achieved with a bolt driver for driving fasteners into a substrate in a driving direction, with a driving piston which can be driven in a setting direction in order to push a fastener into the substrate, with a control unit which is intended to carry out a driving process of the to control the bolt driver, with a sensor device for detecting a parameter during the driving-in process and for transmitting a signal dependent on the detected parameter to the control unit, with the control unit being provided for, depending on the detected parameter, still approaching the fastening element within the driving-in process to control transmitted drive-in energy.
  • control unit is provided for reducing the driving-in energy still to be transmitted to the fastening element during the driving-in process.
  • the control unit is preferably provided for ending the transmission of driving-in energy to the fastening element.
  • control unit is provided for diverting part of the driving-in energy provided for the driving-in process.
  • An advantageous embodiment is characterized in that the recorded parameter includes a force and/or acceleration acting on the fastening element during the driving-in process, preferably transversely to the driving-in direction.
  • the bolt driver comprises a drive which is provided for transferring driving-in energy to the driving piston while the driving piston drives the fastening element into the ground.
  • the drive preferably includes an overpressure chamber and is intended to generate an overpressure in the overpressure chamber and to allow the overpressure to act on the drive piston in order to transfer driving energy to the drive piston, the overpressure chamber having a relief valve that can be controlled by the control unit, and where the control unit is provided for controlling the driving-in energy still to be transmitted to the fastening element within the driving-in process by opening the blow-off valve during the driving-in process.
  • the overpressure chamber particularly preferably comprises a combustion chamber for a solid, liquid or gaseous fuel.
  • the drive also preferably includes an electrical energy store and a coil and is intended to electrically charge the electrical energy store, discharge it suddenly, conduct a discharge current that occurs through the coil and allow the electromagnetic energy released to act on the driving piston to generate driving energy to the driving piston, wherein the drive comprises a switch with which a current flow through the coil can be controlled, and wherein the control unit is provided for the driving energy still to be transmitted to the fastening element within the driving-in process by actuating the switch during the driving-in process Taxes.
  • the object is also achieved with a method for operating a bolt driver for driving fasteners into a substrate in a driving direction, with a driving piston which can be driven in a setting direction in order to push a fastener into the substrate, comprising a) detecting a parameter during a driving-in process, and b) controlling, preferably reducing, a driving-in energy still to be transmitted to the fastening element within the driving-in process as a function of the detected parameter.
  • the transmission of driving-in energy to the fastening element is particularly preferably terminated.
  • An advantageous embodiment is characterized in that part of the driving-in energy provided for the driving-in process is diverted.
  • the recorded parameter includes a force and/or acceleration acting on the fastening element during the driving-in process, in particular transversely to the driving-in direction.
  • a hand-held setting tool 10 for driving fasteners into a substrate is shown.
  • the setting tool 10 is designed as a bolt driver and has a receptacle 20 designed as a bolt guide, in which a fastening element 30 designed as a nail is received in order to be driven into the substrate along a setting axis A (in 1 to the left).
  • the setting tool 10 includes a magazine 40 in which the fasteners are received individually or in a magazine in the form of a fastener strip 50 and are gradually transported into the receptacle 20 .
  • the magazine 40 has a spring-loaded feed element, not designated in any more detail.
  • the setting tool 10 has a driving-in element 60 which includes a piston plate 70 and a piston rod 80 .
  • the driving-in element 60 is intended to convey the fastening element 30 out of the receptacle 20 along the setting axis A into the ground.
  • the driving-in element 60 is guided with its piston plate 70 in a guide cylinder 95 along the setting axis A.
  • the driving-in element 60 is in turn driven by a drive which comprises a squirrel-cage rotor 90 arranged on the piston plate 70, an excitation coil 100, a soft-magnetic frame 105, a circuit 200 and a capacitor 300 with an internal resistance of 5 mOhm.
  • the squirrel-cage rotor 90 consists of a preferably ring-shaped, particularly preferably circular ring-shaped element with a low electrical resistance, for example made of copper, and is attached to the piston plate 70 on the side of the piston plate 70 facing away from the receptacle 20, for example soldered, welded, glued, clamped or positively connected.
  • the piston plate itself is designed as a squirrel-cage rotor.
  • the switching circuit 200 is intended to bring about a rapid electrical discharge of the previously charged capacitor 300 and to conduct the discharge current thereby flowing through the excitation coil 100 which is embedded in the frame 105 .
  • the frame preferably has a saturation flux density of at least 1.0 T and / or an effective specific electrical conductivity of at most 10 6 S / m, so that one of the Excitation coil 100 magnetic field generated by the frame 105 and eddy currents are suppressed in the frame 105.
  • the driving-in element 60 with the piston plate 70 dips into an unspecified annular recess of the frame 105 that the squirrel-cage rotor 90 is arranged at a small distance from the excitation coil 100 .
  • an excitation magnetic field which is generated by a change in an electrical excitation current flowing through the excitation coil, penetrates the squirrel-cage rotor 90 and in turn induces a ring-shaped, circulating electrical secondary current in the squirrel-cage rotor 90 .
  • This building up and thus changing secondary current in turn generates a secondary magnetic field which opposes the excitation magnetic field, as a result of which the squirrel-cage rotor 90 experiences a Lorentz force which is repelled by the excitation coil 100 and drives the driving-in element 60 towards the receptacle 20 and the fastening element 30 received therein .
  • the setting tool 10 further comprises a housing 110, in which the drive is accommodated, a handle 120 with an actuating element 130 designed as a trigger, an electrical energy store 140 designed as an accumulator, a control unit 150, a release switch 160, a pressure switch 170, an temperature sensor 180 arranged on frame 105 for detecting a temperature of exciter coil 100 and electrical connecting lines 141, 161, 171, 181, 201, 301, which connect control unit 150 to electrical energy store 140, release switch 160, pressure switch 170, temperature sensor 180, circuit 200 and capacitor 300 respectively.
  • the setting tool 10 is supplied with electrical energy by means of a mains cable instead of the electrical energy store 140 or in addition to the electrical energy store 140 .
  • the control unit includes electronic components, preferably interconnected on a circuit board to form one or more control circuits, in particular one or more microprocessors.
  • the control unit 150 When the setting tool 10 is attached to a substrate (not shown) (in 1 left) is pressed, a non-specified pressing element actuates the pressing switch 170, which thereby transmits a pressing signal to the control unit 150 by means of the connecting line 171. Triggered by this, the control unit 150 initiates a capacitor charging process, in which electrical energy is transmitted by means of the connecting line 141 from the electrical energy store 140 to the control unit 150 and by means of the connecting lines 301 from the control unit 150 to the capacitor 300 in order to charge the capacitor 300 .
  • the control unit 150 comprises a switching converter, not designated in any more detail, which converts the electrical current from the electrical energy store 140 into a suitable charging current for the capacitor 300 .
  • the setting tool 10 When the capacitor 300 is charged and the driving element 60 is in its in 1 is in the ready-to-set position shown, the setting tool 10 is in a ready-to-set state. Since the capacitor 300 is only charged when the setting tool 10 is pressed against the ground, a setting process is only possible to increase the safety of bystanders when the setting tool 10 is pressed against the ground. In the exemplary embodiments that are not shown, the control unit already initiates the capacitor charging process when the setting tool is switched on or when the setting tool is lifted off the ground or when a previous driving-in process is completed.
  • the actuating element 130 If the actuating element 130 is actuated when the setting tool 10 is ready to be set, for example by pulling with the index finger of the hand gripping the handle 120, the actuating element 130 actuates the release switch 160, which thereby transmits a release signal to the control unit 150 via the connecting line 161. Triggered by this, the control unit 150 initiates a capacitor discharge process, in which electrical energy stored in the capacitor 300 is conducted from the capacitor 300 to the exciter coil 100 by means of the circuit 200 by discharging the capacitor 300 .
  • the circuit 200 shown schematically comprises two discharge lines 210, 220, which connect the capacitor 300 to the excitation coil 200 and of which at least one discharge line 210 is interrupted by a normally open discharge switch 230.
  • Circuit 200 forms an electrical oscillating circuit with excitation coil 100 and capacitor 300 .
  • This resonant circuit oscillating back and forth and/or negative charging of the capacitor 300 may have a negative effect on the efficiency of the drive, but can be prevented with the aid of a freewheeling diode 240 .
  • the discharge lines 210, 220 are electrically connected to an electrode 310, 320 of the capacitor 300, for example by soldering, welding, Screwing, jamming or positive locking.
  • the discharge switch 230 is preferably suitable for switching a discharge current with a high current intensity and is designed, for example, as a thyristor.
  • the discharge lines 210, 220 are at a small distance from one another, so that a parasitic magnetic field induced by them is as small as possible.
  • the discharge lines 210, 220 are combined to form a bus bar and held together with a suitable means, for example a holder or a clip.
  • the freewheeling diode is electrically connected in parallel with the discharge switch. In other exemplary embodiments that are not shown, no freewheeling diode is provided in the circuit.
  • the control unit 150 closes the discharge switch 230 by means of the connecting line 201, as a result of which a discharge current of the capacitor 300 flows through the excitation coil 100 at a high current intensity.
  • the rapidly increasing discharge current induces an excitation magnetic field which penetrates the squirrel-cage rotor 90 and in turn induces a ring-shaped circulating electrical secondary current in the squirrel-cage rotor 90 .
  • This secondary current which builds up in turn generates a secondary magnetic field which opposes the excitation magnetic field, as a result of which the squirrel-cage rotor 90 experiences a Lorentz force which is repelled by the excitation coil 100 and which drives the driving-in element 60 towards the receptacle 20 and the fastening element 30 received therein.
  • the piston rod 80 of the driving-in element 60 hits a head of the fastening element 30 (not designated in any more detail)
  • the fastening element 30 is driven into the ground by the driving-in element 60 .
  • the drive-in element is already in contact with the fastening element before or at the start of the capacitor discharge.
  • the capacitor 300 in particular its center of gravity, is arranged on the setting axis A behind the driving element 60, whereas the receptacle 20 is arranged in front of the driving element 60.
  • the capacitor 300 is therefore arranged axially offset with respect to the drive-in element 60 and radially overlapping with the drive-in element 60 .
  • a short length of the discharge lines 210, 220 can be achieved, as a result of which their resistances can be reduced and the efficiency of the drive can thus be increased.
  • a small distance between a center of gravity of the setting tool 10 and the setting axis A can be implemented. As a result, tilting moments in the event of a recoil of the setting tool 10 during a driving-in process are low.
  • the capacitor is arranged around the drive-in element.
  • the electrodes 310, 320 are arranged on opposite sides of a carrier film 330 wound around a winding axis, for example by metallization of the carrier film 330, in particular vapor-deposited, with the winding axis coinciding with the setting axis A.
  • the carrier film with the electrodes is wound around the winding axis in such a way that a passage remains along the winding axis.
  • the capacitor is arranged around the setting axis, for example.
  • the carrier film 330 With a charging voltage of the capacitor 300 of 1500 V, the carrier film 330 has a film thickness of between 2.5 ⁇ m and 4.8 ⁇ m, with a charging voltage of the capacitor 300 of 3000 V a film thickness of 9.6 ⁇ m, for example.
  • the carrier film is in turn composed of two or more individual films which are layered on top of one another.
  • the electrodes 310, 320 have a sheet resistance of 50 ohms/ ⁇ .
  • a surface of the capacitor 300 has the shape of a cylinder, in particular a circular cylinder, the cylinder axis of which coincides with the setting axis A.
  • a height of this cylinder in the direction of the winding axis is essentially as great as its diameter measured perpendicularly to the winding axis.
  • a low ratio of the height to the diameter of the cylinder results in a low internal resistance with a relatively high capacitance of the capacitor 300 and last but not least a compact design of the setting tool 10 .
  • a low internal resistance of the capacitor 300 is also achieved by a large line cross section of the electrodes 310, 320, in particular by a high layer thickness of the electrodes 310, 320, the effects of the layer thickness on a Self-healing effect and / or a lifetime of the capacitor 300 are to be considered.
  • the capacitor 300 is mounted on the rest of the setting tool 10 in a damped manner by means of a damping element 350 .
  • the damping element 350 dampens movements of the capacitor 300 relative to the rest of the setting device 10 along the setting axis A.
  • the damping element 350 is arranged on the end face 360 of the capacitor 300 and completely covers the end face 360 .
  • the electrical contacts 370, 380 protrude from the end face 360 and penetrate the damping element 350.
  • the damping element 350 has a clearance through which the electrical contacts 370, 380 protrude.
  • the connecting lines 301 each have a relief and/or expansion loop (not shown in detail).
  • a further damping element is arranged on the capacitor, for example on its end face remote from the receptacle.
  • the capacitor is then preferably clamped between two damping elements, that is to say the damping elements are in contact with the capacitor with a bias voltage.
  • the connecting lines have a rigidity which decreases continuously as the distance from the capacitor increases.
  • the setting tool has a housing (not shown), a handle (not shown) with an actuating element, a receptacle (not shown), a magazine (not shown), a driving element (not shown) and a drive for the driving element.
  • the drive comprises a squirrel-cage rotor (not shown) arranged on the driving element, an excitation coil 410, a soft-magnetic frame (not shown), a circuit 420, a capacitor 430, an electrical energy store 440 designed as an accumulator, and a control unit 450 with a direct-current direct-current Transformer (English "DC / DC converter") trained switching converter 451.
  • the switching converter 451 has an electrically connected to the electrical energy store 440 low-voltage side U LV and an electrically connected to the capacitor 430 high-voltage side U HV .
  • the switching circuit 420 is intended to bring about a rapid electrical discharge of the previously charged capacitor 430 and to conduct the discharge current that flows through the excitation coil 410 .
  • the circuit 420 comprises two discharge lines 421, 422, which connect the capacitor 430 to the excitation coil 420 and of which at least one discharge line 421 is interrupted by a normally open discharge switch 423.
  • a freewheeling diode 424 prevents an oscillating circuit formed by circuit 420 with excitation coil 410 and capacitor 430 from excessively oscillating back and forth.
  • the control unit 450 When the setting tool is pressed against the ground, the control unit 450 initiates a capacitor charging process, in which electrical energy is conducted from the electrical energy store 440 to the switching converter 451 of the control unit 450 and from the switching converter 451 to the capacitor 430 in order to charge the capacitor 430 charge.
  • the switching converter 451 converts the electrical current from the electrical energy store 440 at an electrical voltage of 22 V, for example, into a suitable charging current for the capacitor 430 at an electrical voltage of 1500 V, for example.
  • the control unit 450 initiates a capacitor discharge process, in which electrical energy stored in the capacitor 430 is routed from the capacitor 430 to the excitation coil 410 by means of the circuit 420 by discharging the capacitor 430 .
  • the control unit 450 closes the discharge switch 430, as a result of which a discharge current of the capacitor 430 flows through the excitation coil 410 at a high current intensity.
  • the squirrel-cage rotor (not shown) experiences a Lorentz force that is repelled by the excitation coil 410 and drives the driving element. Thereafter, the driving element is returned to a ready-to-set position by a resetting device (not shown).
  • An amount of energy of the current flowing through the excitation coil 410 during the rapid discharge of the capacitor 430 is controlled by the control unit 450, in particular in a continuously variable manner, by adjusting a charging voltage (U HV ) present at the capacitor 430 during and/or at the end of the capacitor charging process and before the start of the rapid discharge will.
  • U HV a charging voltage
  • the current flowing through the capacitor 430 is proportional to the charging voltage and can therefore be controlled by means of the charging voltage.
  • the capacitor is charged during the capacitor charging process until the charging voltage U HV has reached a target value. Then the charging current is switched off. If the charging voltage decreases before the rapid discharge, for example due to parasitic effects, the charging current is switched on again until the charging voltage U HV has reached the target value again.
  • the control unit 450 controls the amount of energy of the current flowing through the excitation coil 410 during the rapid discharge of the capacitor 430 as a function of a number of control variables.
  • the setting tool comprises a means designed as a temperature sensor 460 for detecting a temperature of the excitation coil 410 and a means for detecting a capacitance of the capacitor, which is designed, for example, as a calculation program 470 and the capacitance of the capacitor from a current intensity and an electrical voltage curve of the charging current during the capacitor charging process.
  • the setting tool comprises a means designed as an acceleration sensor 480 for detecting a mechanical load of the setting tool.
  • the setting tool includes a means for detecting a driving depth of the fastener into the ground, which includes an optical, capacitive or inductive proximity sensor 490, for example, which includes a reverse position of the driving element, which is not shown.
  • the setting tool also includes a means for detecting a speed of the driving element, which is a means designed as a first proximity sensor 500 for detecting a first point in time at which the driving element passes a first position during its movement towards the fastening element, a means designed as a second proximity sensor 510 for detecting a second point in time at which the driving-in element passes a second position during its movement towards the fastening element, and a means designed as a calculation program 520 for detecting a time difference between the first point in time and the second point in time.
  • the setting tool comprises an operating element 530 that can be adjusted by a user and a means designed as a barcode reader 540 for detecting a parameter of a fastening element to be driven in.
  • control variables as a function of which control unit 450 controls the amount of energy in the current flowing through excitation coil 410 during the rapid discharge of capacitor 430, include the temperature detected by temperature sensor 460 and/or the the capacitance of the capacitor calculated by calculation program 470 and/or the load magnitude of the setting tool recorded by acceleration sensor 480 and/or the depth of drive of the fastener recorded by proximity sensor 490 and/or the speed of the driving element calculated by calculation program 520 and/or the user set setting of the operating element 530 and/or the parameter of the fastening element detected by the barcode reader 540.
  • the setting tool also includes a sensor device designed as an acceleration sensor 550 for detecting an actual acceleration of the driving element during a driving process and for transmitting a signal that is dependent on the detected actual acceleration to the control unit 450.
  • the control unit 450 includes a memory 560 in which a target -Acceleration of the driving element is stored during a successful driving process. As soon as control unit 450 detects a difference between the target acceleration and the actual acceleration, for example if the driving element is braked more than would be expected during a trouble-free driving process, control unit 450 ends the transmission of driving energy to the fastening element. This is accomplished in that part of the driving energy provided for the driving process is diverted by opening the discharge switch 423 . The discharge current is used to charge the capacitor 430 or the battery 440, for example.
  • the acceleration sensor detects an acceleration acting on the fastening element during the driving-in process, transversely to the driving-in direction.
  • a hand-held setting tool 600 for driving fasteners into a substrate is shown schematically.
  • the setting tool 600 is designed as a bolt driver and has a housing 605 and a receptacle 610 designed as a bolt guide, in which a fastening element (not shown) is accommodated in order to be driven into the ground along a setting axis B (in 3 to the left).
  • the setting tool 600 includes a magazine 620 in which a plurality of fastening elements are received and are gradually transported into the receptacle 610 .
  • the setting tool 600 has a driving-in element 630 designed as a piston, which includes a piston plate 631 and a piston rod 632 .
  • the driving-in element 630 is intended to convey the fastening element out of the receptacle 610 along the setting axis B into the ground.
  • the driving element 630 with his Piston plate 631 is guided in a guide cylinder 640 along the setting axis B, which has a plurality of blow-out openings 645.
  • the driving-in element 630 is in turn driven by a drive 700 which has an overpressure chamber 650 designed as a combustion chamber for a combustion gas.
  • the drive 700 is intended to generate an overpressure in the overpressure chamber 650 in that a fuel in the form of liquid gas is conducted by means of an injection valve 660 from a fuel tank 670 through an injection line 680 into the overpressure chamber 650 and ignited there. Additionally or alternatively, an overpressure is generated in the overpressure chamber 650 in that a compressor 710 supplied with electrical energy by an electric battery 690 directs compressed air into the overpressure chamber 650 by means of a compressed air line 720 .
  • the driving-in element 630 transmits the driving-in energy to the fastening element by means of the piston rod 632.
  • This driving-in process is triggered by a user of the setting tool 600 actuating a trigger 730 designed as a trigger.
  • the setting tool 600 further comprises a control unit 740, a sensor device 750 arranged in the region of the driving-in element 630 and/or the receptacle 610 for detecting an actual acceleration of the driving-in element 630 during a driving-in process, and a first signal line 760 for transmitting one of the actual accelerations detected dependent signal from the sensor device 750 to the control unit 740.
  • the setting tool 600 further comprises a relief valve 770 arranged on the overpressure chamber for releasing excess pressure in the overpressure chamber 650 and a first control line 780 for transmitting a control signal from the control unit 740 to the relief valve 770.
  • the control unit 740 detects an unusual acceleration or deceleration of the driving element 630 by means of a signal transmitted from the sensor device 750 via the signal line 760, the control unit 740 reduces the transmission of driving energy to the driving element 630 and thus to the fastening element. This is accomplished in that the control unit 740 transmits a control signal to the blow-off valve 770 via the control line 780 in order to open the blow-off valve 770 . As a result, any overpressure that may still be present in the overpressure chamber 650 is partially or completely blown off, so that the Driving element is accelerated less or no longer. This reduces the risk of damage to the subsoil due to excessive driving energy.
  • the setting tool comprises an operating element 790, for example a reset button, by means of which a user can reset the control unit 740.

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

Claims (14)

  1. Appareil de scellement servant à l'enfoncement d'éléments de fixation dans un sens d'enfoncement dans un substrat, comportant un piston d'entraînement (60) qui peut être entraîné dans un sens d'enfoncement, afin de pousser un élément de fixation dans le substrat, comportant une unité de commande (150), laquelle est prévue pour commander une opération d'enfoncement de l'appareil de scellement, comportant un dispositif de détection (750) servant à la détection d'un paramètre pendant l'opération d'enfoncement et à la transmission d'un signal dépendant du paramètre détecté à l'unité de commande (150), caractérisé en ce que l'unité de commande (150) est prévue pour commander une énergie d'enfoncement devant encore être transmise à l'élément de fixation pendant l'opération d'enfoncement en fonction du paramètre détecté.
  2. Appareil de scellement selon la revendication 1, l'unité de commande (150) étant prévue pour réduire l'énergie d'enfoncement devant encore être transmise à l'élément de fixation pendant l'opération d'enfoncement.
  3. Appareil de scellement selon la revendication 2, l'unité de commande (150) étant prévue pour achever la transmission d'énergie d'enfoncement à l'élément de fixation.
  4. Appareil de scellement selon l'une des revendications 1 et 2, l'unité de commande (150) étant prévue pour détourner une partie d'une énergie d'enfoncement fournie pour l'opération d'enfoncement.
  5. Appareil de scellement selon l'une des revendications précédentes, le paramètre détecté comprenant une force et/ou une accélération agissant sur l'élément de fixation pendant l'opération d'enfoncement.
  6. Appareil de scellement selon la revendication 5, le paramètre détecté comprenant une force et/ou une accélération transversales au sens d'enfoncement et agissant sur l'élément de fixation pendant l'opération d'enfoncement.
  7. Appareil de scellement selon l'une des revendications précédentes, comprenant en outre un entraînement (700), lequel est prévu pour transmettre de l'énergie d'enfoncement au piston d'entraînement (60), pendant que le piston d'entraînement (60) enfonce l'élément de fixation dans le substrat.
  8. Appareil de scellement selon la revendication 7, l'entraînement (700) comprenant une chambre de surpression (650) et étant prévu pour produire une surpression dans la chambre de surpression (650) et pour laisser la surpression agir sur le piston d'entraînement (60), afin de transmettre de l'énergie d'enfoncement au piston d'entraînement (60), la chambre de surpression (650) présentant une soupape de décharge (770) pouvant être commandée par l'unité de commande (150), et l'unité de commande (150) étant prévue pour commander l'énergie d'enfoncement devant encore être transmise à l'élément de fixation pendant l'opération d'enfoncement par ouverture de la soupape de décharge (770) pendant l'opération d'enfoncement.
  9. Appareil de scellement selon la revendication 8, la chambre de surpression (650) comprenant une chambre de combustion pour un combustible solide, liquide ou gazeux.
  10. Appareil de scellement selon la revendication 7, l'entraînement (700) comprenant un accumulateur d'énergie électrique (440) et une bobine (100) et étant prévu pour charger électriquement l'accumulateur d'énergie électrique (440), pour le décharger brusquement, pour conduire un courant de décharge se produisant ainsi à travers la bobine (100) et pour laisser agir sur le piston d'entraînement (60) une énergie électromagnétique libérée ainsi, afin de transmettre de l'énergie d'enfoncement au piston d'entraînement (60), l'entraînement (700) comprenant un commutateur (230) à l'aide duquel un flux de courant à travers la bobine (100) peut être commandé, et l'unité de commande (150) étant prévue pour commander l'énergie d'enfoncement devant encore être transmise à l'élément de fixation pendant l'opération d'enfoncement par actionnement du commutateur (230) pendant l'opération d'enfoncement.
  11. Procédé de fonctionnement d'un appareil de scellement servant à l'enfoncement d'éléments de fixation dans un sens d'enfoncement dans un substrat, comportant un piston d'entraînement (60) qui peut être entraîné dans un sens d'enfoncement, afin de pousser un élément de fixation dans le substrat, comprenant
    - la détection d'un paramètre pendant une opération d'enfoncement
    caractérisé par
    - la commande, en particulier la réduction, d'une énergie d'enfoncement devant encore être transmise à l'élément de fixation pendant l'opération d'enfoncement en fonction du paramètre détecté.
  12. Procédé selon la revendication 11, comprenant en outre
    - l'achèvement de la transmission d'énergie d'enfoncement à l'élément de fixation.
  13. Procédé selon l'une des revendications 11 et 12, comprenant en outre
    - le détournement d'une partie d'une énergie d'enfoncement fournie pour l'opération d'enfoncement.
  14. Procédé selon l'une des revendications précédentes 11 à 13, le paramètre détecté comprenant une force et/ou une accélération en particulier transversales au sens d'enfoncement et agissant sur l'élément de fixation pendant l'opération d'enfoncement.
EP19808602.7A 2018-12-19 2019-11-27 Appareil de scellement et procédé de fonctionnement d'un appareil de scellement Active EP3898120B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP18214155.6A EP3670098A1 (fr) 2018-12-19 2018-12-19 Appareil de scellement et procédé de fonctionnement d'un appareil de scellement
PCT/EP2019/082711 WO2020126366A1 (fr) 2018-12-19 2019-11-27 Pistolet goujonneur et procédé pour faire fonctionner un pistolet goujonneur

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EP3898120B1 true EP3898120B1 (fr) 2023-01-04

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EP19808602.7A Active EP3898120B1 (fr) 2018-12-19 2019-11-27 Appareil de scellement et procédé de fonctionnement d'un appareil de scellement

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EP3578308A1 (fr) * 2018-06-06 2019-12-11 HILTI Aktiengesellschaft Appareil de pose
EP3578305A1 (fr) * 2018-06-06 2019-12-11 HILTI Aktiengesellschaft Appareil de pose
EP3578316A1 (fr) * 2018-06-06 2019-12-11 HILTI Aktiengesellschaft Appareil de pose
EP4370283B1 (fr) 2021-07-10 2025-12-24 Rhefor GbR Outil de pose
CA3230366A1 (fr) * 2021-09-08 2023-03-16 Illinois Tool Works Inc. Dispositif electroportatif
AU2022343525A1 (en) 2021-09-08 2024-03-14 Illinois Tool Works Inc. Electroportable device
AU2023402008A1 (en) * 2022-12-01 2025-05-15 Illinois Tool Works Inc. Actuation mechanism

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EP1277548B1 (fr) * 2001-07-19 2006-05-17 HILTI Aktiengesellschaft Appareil de scellement de chevilles avec réglage de la profondeur de pose
EP2656974A2 (fr) * 2012-04-25 2013-10-30 HILTI Aktiengesellschaft Outil a main et procédé de fonctionnement
US20130319705A1 (en) * 2012-06-05 2013-12-05 Illinois Tool Works Inc. Fastener-driving tool including a fastening result detector
DE102017219712A1 (de) * 2017-11-07 2019-05-09 Robert Bosch Gmbh Gerät mit Rucksteuerung

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EP2681011A2 (fr) * 2011-02-28 2014-01-08 Hitachi Koki Co., Ltd. Outil électrique et procédé de commande dudit outil électrique
DE102012223011A1 (de) * 2012-12-13 2014-06-18 Hilti Aktiengesellschaft Verfahren zum Betreiben eines handgeführten Arbeitsgeräts
JP6623662B2 (ja) * 2015-10-09 2019-12-25 マックス株式会社 打込機

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Publication number Priority date Publication date Assignee Title
EP1277548B1 (fr) * 2001-07-19 2006-05-17 HILTI Aktiengesellschaft Appareil de scellement de chevilles avec réglage de la profondeur de pose
EP2656974A2 (fr) * 2012-04-25 2013-10-30 HILTI Aktiengesellschaft Outil a main et procédé de fonctionnement
US20130319705A1 (en) * 2012-06-05 2013-12-05 Illinois Tool Works Inc. Fastener-driving tool including a fastening result detector
DE102017219712A1 (de) * 2017-11-07 2019-05-09 Robert Bosch Gmbh Gerät mit Rucksteuerung

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EP3898120A1 (fr) 2021-10-27
WO2020126366A1 (fr) 2020-06-25
US20210387317A1 (en) 2021-12-16
EP3670098A1 (fr) 2020-06-24

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