EP2923803A1 - Procédé et appareil de travail destiné à enfoncer des éléments de fixation - Google Patents

Procédé et appareil de travail destiné à enfoncer des éléments de fixation Download PDF

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Publication number
EP2923803A1
EP2923803A1 EP14162069.0A EP14162069A EP2923803A1 EP 2923803 A1 EP2923803 A1 EP 2923803A1 EP 14162069 A EP14162069 A EP 14162069A EP 2923803 A1 EP2923803 A1 EP 2923803A1
Authority
EP
European Patent Office
Prior art keywords
fastener
implement
hand
guide
detected
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Withdrawn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
EP14162069.0A
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German (de)
English (en)
Inventor
Norbert Welte
Uwe Gerold
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 EP14162069.0A priority Critical patent/EP2923803A1/fr
Publication of EP2923803A1 publication Critical patent/EP2923803A1/fr
Withdrawn legal-status Critical Current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

Definitions

  • the invention relates to a method for driving fasteners into a substrate by means of a hand-held implement, which is detected after a setting operation, whether and / or how far a set fastener protrudes from the ground.
  • the invention further relates to a hand-held implement for driving fasteners.
  • the invention also relates to an interface unit for such a working device.
  • German patent application DE 103 03 006 A1 is a hand-held implement with a set-up or impact pulses generating work and known with at least one sensor device which is used to detect occurring during a set or impact pulse acceleration forces, as well as with an interface unit having an evaluation and storage unit for processing and storage includes the data determined by the sensor device.
  • the object of the invention is the quality of setting operations, which are driven, preferably by means of a hand-held implement, into a background, which is detected after a setting process, whether and / or how far a set fastener protrudes from the ground to further improve ,
  • the object is in a method for driving fasteners into a ground using a hand-held implement, which is detected after a setting process, whether and / or how far a set fastener protrudes from the ground, achieved in that the fastener element board of at least one previous or current setting process is detected capacitively or inductively.
  • the information as to whether and / or how far a set fastener protrudes from the ground is also referred to as fastener board.
  • the hand-held implement is preferably a hand-held implement for setting bolts, which is operated with fuel gas, propellants, compressed air or electricity. Therefore, the implement may also be referred to as a gas, powder, compressed air or electric, in particular battery-operated bolt gun or bolt push tool.
  • the present invention is not limited to bolt guns.
  • the fasteners may also be nails. Therefore, the fastener board is also referred to as nail board.
  • the fastener board or nail board can be detected, for example, by means of a suitable gauge, which is enclosed with a device case, in which the hand-held implement is transported. With the aid of such a teaching, it can be judged, for example, whether the depth of penetration of the fastening element achieved in a preceding setting operation is within a desired range.
  • the fastener element board is not determined manually or optically, but detected capacitively or inductively. This provides, among other things, the advantage that it is possible to react directly to a change in the fastener element board within the device.
  • the capacitive or inductive detection of the fastener element board the setting of the working device, in particular the setting of a provokerapergiemenge to be provided by the implement for a subsequent setting operation can be improved. In addition, device malfunctions can be reduced.
  • the capacitive or inductive detection of the fastener element board provides, inter alia, the following advantages: Higher mechanical robustness, in particular with a high device acceleration; less dirt sensitivity; lower heat sensitivity; lower energy consumption of the detection and measurement process.
  • an undesired damage of the fastener for example, a shear fracture of the fastener, detected or detected.
  • the capacitive or inductive detection of the fastener element board can be done directly on the fastener.
  • a capacitive or inductive sensor device can be integrated into the working device.
  • the capacitive or inductive sensor device can also be arranged detached from the working device, for example in a separate receiving device.
  • the capacitive and the inductive detection of the fastener board have in common that they use, for example, the physical effect of the resonant circuit detuning.
  • An operating point calibration takes place, for example, on the edge of a resonance frequency. This makes it possible in a simple manner a sensitive detection in detuning the resonant circuit and a resolution of the finest changes.
  • a preferred embodiment of the method is characterized in that the fastener element board is detected in a fastener guide by a sensor device integrated in the fastener guide.
  • the fastener guide guides the fasteners accelerated, for example, by a power piston, before exiting the work tool to be driven underground.
  • the sensor device is advantageously arranged spatially in the fastener guide. This provides the advantage that the sensor device can be accommodated protected. This allows trouble-free operation of the sensor device even under difficult external conditions, for example in a construction site operation.
  • a further preferred exemplary embodiment of the method is characterized in that the detected fastener element board together with drive-in energy information, pressure profile information and / or acceleration information is used in terms of control in order to improve the quality of subsequent setting operations.
  • the detected fastener element board together with drive-in energy information, pressure profile information and / or acceleration information is used in terms of control in order to improve the quality of subsequent setting operations.
  • the target specification or the desired value usually depends on the type and size of the fastening elements and on whether the fastening elements are equipped, for example, with sealing rings or other washers, which should come to lie on the ground after the driving operation.
  • the setpoint is entered by a user of the bolt setting tool before a setting or when inserting the fasteners in a magazine of the bolt setting device via an input device.
  • the bolt setting device particularly preferably has a reading device with the aid of which the type and / or size of the fastening elements is read.
  • the associated setpoint for the fastener element projection is then preferably stored in a memory of the bolt-firing device and is then used to determine the driving-in energy.
  • the reading takes place, for example, via a bar code and / or a so-called tag on a packaging of the fastening elements or via a coding on the fastening elements or a magazine strip carrying the fastening elements.
  • the pressure history information may be provided by a suitable pressure sensor integrated with the implement.
  • the acceleration information may be provided by at least one acceleration sensor integrated in the implement.
  • the acceleration information may relate to an axis of the implement, for example, in the direction of movement of the fastener in a setting process.
  • the acceleration information can also be assigned to several axes.
  • a further preferred exemplary embodiment of the method is characterized in that the automatically detected fastener element board together with further information, such as an ambient temperature or a device temperature, is used in a control-related manner for the quality of subsequent setting processes continue to improve.
  • the further information is taken into account, in particular, in the calculation of the future amount of driving energy.
  • the invention further relates to an interface unit for a hand-held implement, which is operable or operated according to a method described above.
  • the interface unit advantageously has an interface which connects an automatic receiving device for detecting the fastener element board of at least one current or previous setting operation with an evaluation unit.
  • the evaluation unit for example, the detected fastener element board is compared with a desired specification.
  • calculations are carried out in the evaluation unit, for example, to determine an optimized amount of drive-in energy.
  • the interface unit may be physically separate from the hand-held implement in a separate device, particularly a portable telephone and / or computer.
  • the interface unit may for example be received in a kind of wristwatch worn by a user of the hand-held implement.
  • the interface unit can also be integrated into the hand-held implement.
  • the interface unit may also be located further away from the user and the implement. Then it may be useful that the interface unit is connected via a remote data transmission with the implement.
  • a preferred embodiment of the interface unit is characterized in that the interface unit has a user interface via which a user is automatically transmitted information about at least one current or previous setting process and / or other information.
  • the information about the current or previous setting process includes information as to whether a given fastener board is within a desired target range.
  • the further information includes, for example, instructions as to how the user or user of the implement is to respond to deviations of the detected fastener board from a desired default.
  • a further preferred embodiment of the interface unit is characterized in that the interface unit comprises a visual display, via which a user automatically receives information about at least one current or previous setting process and / or further information.
  • the information can be transmitted alternatively or additionally haptically and / or acoustically.
  • the invention further relates to a receiving device for automatically detecting a fastener element board of at least one current or previous setting operation with a capacitive or inductive sensor device.
  • the receiving device may be the same or similar to a conventional doctrine.
  • the receiving device is advantageously equipped with a capacitive or inductive sensor device, which detects whether and / or how far a set fastener protrudes from the ground.
  • a capacitive or inductive sensor device which detects whether and / or how far a set fastener protrudes from the ground.
  • the measurement of the nail board can be done according to the principle of a caliper, but also contactless, for example, inductive.
  • the receiving device is preferably a separate device that can be operated independently of the working device.
  • the capacitive or inductive sensor device is arranged, for example, in a sleeve-like receiving body, which is designed to be the same or similar to the fastening element guide described above.
  • the above object is alternatively or additionally solved in a hand-held implement for driving fasteners, which is operable or operated according to a method described above, that the working device is equipped with a previously described interface unit.
  • the interface unit can be firmly connected to the implement.
  • the interface unit can also be detachably attached to the implement.
  • the above object is alternatively or additionally achieved in a hand-held implement for driving fasteners, which is operable or operated according to a method described above, that the implement with an automatic recording device for detecting the fastener element board of at least one current or previous setting process and equipped with a capacitive or inductive sensor device.
  • the recording device is designed to be particularly robust and suitable for construction sites.
  • a further preferred embodiment of the hand-held implement is characterized in that the capacitive or inductive sensor device for detecting the fastener element board is arranged by at least one current or previous setting operation at a setting end of the implement. As setting one end of the hand-held implement is called, from which the fastener exits during a setting process and is driven into the ground.
  • the seating end is also referred to as a bolt leading end or fastener leading end because the fasteners or bolts exiting the seating end are guided in the tool prior to their exit, for example, in a previously described fastener guide.
  • the fastener guide is designed, for example, as a sleeve, which has substantially the shape of a straight circular cylinder jacket.
  • Another preferred exemplary embodiment of the hand-guided implement is characterized in that the capacitive or inductive sensor device is integrated into one or the fastener guide. This has proved to be advantageous with regard to use of the implement under difficult external conditions, for example on a construction site. By accommodating the sensor device in the fastener guide, in particular unwanted impairments of the function of the sensor device due to dirt, temperature influences, weathering or damage can be minimized.
  • a further preferred embodiment of the hand-held implement is characterized in that the or a further capacitive or inductive sensor device is integrated in a piston guide.
  • the piston guide serves to guide a piston in the implement.
  • the piston is preferably used to drive the fasteners into the ground.
  • About the integrated into the piston guide sensor means of fastener board can be detected indirectly.
  • the fastener element board can be determined in a simple manner indirectly via the sensor device in the piston guide.
  • a further preferred embodiment of the hand-held implement is characterized in that at least one coil is arranged in the fastener guide or in the piston guide.
  • the coil is used to represent the inductive Sensor device and can be completely integrated into the piston guide or in the fastener guide. As a result, a robust protection for the sensor device can be represented in a simple manner.
  • Another preferred embodiment of the hand-held implement is characterized in that two plates are arranged in the fastener guide or in the piston guide, which constitute an electrical capacitor.
  • the two plates serve to represent the capacitive sensor device.
  • the two plates like the previously described coil, can be completely integrated into the fastener guide or the piston guide.
  • FIG. 1 is an inventive implement 1 with a housing 2 shown greatly simplified.
  • the implement 1 is designed as a hand-held bolt setting device with a handle 4 to which the bolt setting device 1 for driving a fastener can be tacked, which emerges on actuation of a trigger switch 3 at a bolt leading end 5 from the bolt setting device 1 and can be driven into a ground.
  • the Bolt guide end 5 is also generally referred to as a fastener guide end or shortened as a seated end.
  • the fasteners used are preferably provided via a device-internal magazine 6, which is mounted in the vicinity of the bolt guide end 5 of the bolt-firing device 1. From the magazine 6, the fasteners are preferably automatically removed individually and provided at the bolt leading end 5.
  • the energy required for driving the fastening elements into the ground is provided in a fuel container in the interior of the bolt setting device 1.
  • the fuel container preferably contains liquid fuel gas and is therefore also referred to as a gas container or gas cartridge.
  • the fuel tank can be connected via an adjustable or controllable metering device and a gas line with a combustion chamber or a combustion chamber 12.
  • the metering device preferably comprises a metering valve, via which the amount of gas supplied to the combustion chamber 12, for example volumetrically or time-dependently, can be controlled.
  • fuel in particular gas
  • air in the combustion chamber 12
  • a fastener such as a bolt or a nail
  • the energy required for driving is transmitted, for example via a working piston from the combustion chamber 12 to a fastening element on the bolt guide end 5.
  • a device 14 is arranged, which serves to generate turbulence in the combustion chamber 12, to flush the combustion chamber 12 and / or to cool.
  • the device 14 comprises a fan 15, which is driven by an electric motor 18.
  • the electric motor 18 is controlled via an electronic control device 20.
  • the energy required to drive in the fastening elements can also be provided mechanically, for example via a prestressed spring device. That is, the present invention is not limited to gas powered bolt guns.
  • a receiving device 22 is mounted on the bolt guide end 5, with which during operation of the implement 1 can be automatically detected whether and / or how far a set fastener protrudes from the ground.
  • the receiving device 22 is connected to a device-internal evaluation unit 24, which is integrated in the control device 20.
  • the evaluation unit 24 is connected to a user interface 25, which comprises a display 26.
  • the evaluation unit 24 is also connected to an actuator device 28 in connection.
  • the actuator device 28 is integrated together with the control device 20 in the handle 4 of the implement 1.
  • the user interface 25 is attached to the top of the implement 1 so that the display 26 is readily visible to a user during operation of the implement 1.
  • the interface unit 35 comprises four rectangular symbols 41, 42, 43 and 45.
  • the rectangle symbol 41 is the receiving device 22 in FIG. 1 assigned.
  • the rectangular symbol 42 is the evaluation unit 24 in FIG FIG. 1 assigned.
  • the rectangle icon 43 is the indicator 26 in FIG FIG. 1 assigned.
  • the rectangular symbol 45 symbolizes an interface which connects the automatic recording device 41 or 22 with the evaluation unit 42 or 24.
  • these optimization measures are automatically carried out device-internally.
  • the optimization measures are preferably controlled by the control device 20 and executed by the actuator device 28.
  • the automatic device setting avoids wrong, user-dependent settings.
  • the automatically correct setting will cause device malfunction reduces and increases device life. Furthermore, the security of the application is increased.
  • an acceleration sensor device are detected with the accelerations of the implement 1 during operation.
  • the acceleration sensor device 21 includes, for example, an acceleration sensor with which the acceleration of a piston in the implement 1 is detected.
  • the acceleration sensor device 21 may also include a plurality of acceleration sensors with which accelerations along different axes of the implement 1 can be detected.
  • the acceleration information acquired with the acceleration sensor device 21 can advantageously be used in combination with the detected fastener element board for detecting incorrect applications of the implement 1.
  • damage to the fastening elements, in particular shear fractures can be detected by the combined evaluation of the acceleration information with the fastener element board.
  • FIG. 1 illustrated implement 1 comprises at its bolt guide end 5, a fastener guide 23, which is also referred to as bolt guide when using bolts as fasteners.
  • the receiving device 22 is combined with the fastener guide 23 at the bolt guide end 5 of the implement 1.
  • the receiving device 22 may also be designed as a separate device which can be used separately and independently of the implement 1.
  • a sensor device 40 is integrated in the fastener guide 23 .
  • the sensor device 40 is designed as an inductive or capacitive sensor device.
  • the fastener element board of a preceding setting process can be detected automatically.
  • the fastener board can be detected in a current setting process.
  • the fastener element board may also be detected during the driving-in process if necessary.
  • FIGS. 3 and 4 is the fastener guide 23 of the implement 1 from FIG. 1 enlarged and shown in longitudinal section according to two different embodiments of the sensor device 40.
  • the fastener guide 23 is placed with the bolt guide end 5 on a mounting part 52.
  • the mounting part 52 is, for example, a sheet-metal part which is fastened by means of a fastening element 54 to a substrate 50 indicated by hatching.
  • the mounting part 52 is partially disposed between the seating end or bolt leading end 5 and the ground 50.
  • the sensor device 40 is integrated in the fastener guide 23. In this case, the sensor device 40 via at least one (not shown) control line to the evaluation unit (24 in FIG. 1 ) of the implement. In addition, the sensor device 40 is connected via at least one (also not shown) power supply line to a power source in the implement.
  • the sensor device 40 is designed as an inductive sensor device with a coil or winding 60 which is arranged in the fastener guide 23.
  • the winding or coil 60 includes, for example, some turns that are recessed in a front portion of the fastener guide 23.
  • a voltage in the winding or coil 60 is induced.
  • the sensor device 40 is designed as a capacitive sensor device with two plates 61 and 62.
  • the two plates 61 and 62 are arranged in a front region of the fastener guide 23 and serve to represent a capacitor for capacitive detection of the volume of the fastener in the fastener guide 23 via the capacitive sensor device 40 in FIG. 4 It is also particularly advantageous for changes to the fastening element 54 itself, for example shear fractures, to be detected.
  • FIG. 5 is a piston guide 65 of the in FIG. 1 shown working device 1 shown in longitudinal section.
  • the piston guide 65 serves to guide a piston 66 when driving a fastener into the ground.
  • the piston 66 includes a Base 67, with which the piston 66 is guided in the piston guide 65. From the main body 67 of the piston 66 is a plunger 68 goes out. The plunger 68 is with its free end in the fastener guide (23 in the FIGS. 3 and 4 ) guided.
  • a winding 70 and two plates 71, 72 are integrated.
  • the winding 70 and the plates 71, 72 serve to represent an inductive or capacitive sensor device 80, which is assigned to the main body 67 of the piston 66.
  • the sensor device 80 may also comprise only the winding 70 or only the two plates 71, 72.
  • the current position and / or a speed profile of the piston 66 can be detected.
  • the piston position or the piston speed curve can be deduced on the driving behavior.
EP14162069.0A 2014-03-27 2014-03-27 Procédé et appareil de travail destiné à enfoncer des éléments de fixation Withdrawn EP2923803A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14162069.0A EP2923803A1 (fr) 2014-03-27 2014-03-27 Procédé et appareil de travail destiné à enfoncer des éléments de fixation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14162069.0A EP2923803A1 (fr) 2014-03-27 2014-03-27 Procédé et appareil de travail destiné à enfoncer des éléments de fixation

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EP2923803A1 true EP2923803A1 (fr) 2015-09-30

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EP14162069.0A Withdrawn EP2923803A1 (fr) 2014-03-27 2014-03-27 Procédé et appareil de travail destiné à enfoncer des éléments de fixation

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10303006A1 (de) 2003-01-27 2004-08-05 Hilti Ag Handgeführtes Arbeitsgerät
US20050001000A1 (en) * 2003-06-17 2005-01-06 Bernard Favre-Bulle Setting device
US20050217097A1 (en) * 2002-01-21 2005-10-06 Antonin Solfronk Placing tool with means for contolling placing processes
DE102006002237A1 (de) 2006-01-17 2007-07-19 Böllhoff Verbindungstechnik GmbH Verfahren und Vorrichtung zum Überwachen eines Setzbolzen-Fügeprozesses
EP2465641A2 (fr) * 2010-12-15 2012-06-20 HILTI Aktiengesellschaft Outil électrique de fixation de boulons
US20130319705A1 (en) * 2012-06-05 2013-12-05 Illinois Tool Works Inc. Fastener-driving tool including a fastening result detector

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050217097A1 (en) * 2002-01-21 2005-10-06 Antonin Solfronk Placing tool with means for contolling placing processes
DE10303006A1 (de) 2003-01-27 2004-08-05 Hilti Ag Handgeführtes Arbeitsgerät
US20050001000A1 (en) * 2003-06-17 2005-01-06 Bernard Favre-Bulle Setting device
DE102006002237A1 (de) 2006-01-17 2007-07-19 Böllhoff Verbindungstechnik GmbH Verfahren und Vorrichtung zum Überwachen eines Setzbolzen-Fügeprozesses
EP2465641A2 (fr) * 2010-12-15 2012-06-20 HILTI Aktiengesellschaft Outil électrique de fixation de boulons
US20130319705A1 (en) * 2012-06-05 2013-12-05 Illinois Tool Works Inc. Fastener-driving tool including a fastening result detector

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