EP0522996A1 - Powder-actuated fastening tool with magazine for fasteners - Google Patents
Powder-actuated fastening tool with magazine for fasteners Download PDFInfo
- Publication number
- EP0522996A1 EP0522996A1 EP92810192A EP92810192A EP0522996A1 EP 0522996 A1 EP0522996 A1 EP 0522996A1 EP 92810192 A EP92810192 A EP 92810192A EP 92810192 A EP92810192 A EP 92810192A EP 0522996 A1 EP0522996 A1 EP 0522996A1
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- EP
- European Patent Office
- Prior art keywords
- guide
- setting tool
- bolt
- driving
- housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
- B25C1/00—Hand-held nailing tools; Nail feeding devices
- B25C1/08—Hand-held nailing tools; Nail feeding devices operated by combustion pressure
- B25C1/10—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge
- B25C1/14—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge acting on an intermediate plunger or anvil
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
- B25C1/00—Hand-held nailing tools; Nail feeding devices
- B25C1/08—Hand-held nailing tools; Nail feeding devices operated by combustion pressure
- B25C1/10—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge
- B25C1/18—Details and accessories, e.g. splinter guards, spall minimisers
- B25C1/182—Feeding devices
- B25C1/184—Feeding devices for nails
Definitions
- the invention relates to a powder-operated setting tool with a housing, in which a pressing device that can project beyond the end face of the housing on the driving direction side and a piston guide that serves to guide a driving piston can be axially displaced under mutual axial contact, the pressing device and the piston guide being axially displaced counter to the driving direction, a tensioning device for tension a firing pin and a laterally protruding magazine aligned with a passage opening in the housing is arranged on the housing for the fastening elements held in guide bushes connected to one another in the manner of a belt.
- a powder-powered setting tool with a laterally projecting magazine for fastening elements which are guided in guide bushes connected to one another in the manner of a belt is known, for example, from DE-A-36 06 514.
- this setting tool provided with a magazine as with single-shot devices, the problem can be solved that the device can only be put into operation by igniting propellant charges if it is pressed against the component into which the fastening elements are to be driven. This is the only way to avoid accidents that can lead to personal injury.
- the setting tool mentioned has an ignition pin for the propellant charges, which is only tensioned when the setting device is pressed against the component.
- a clamping device for the ignition pin is provided, which interacts with the axially displaceable piston guide.
- This piston guide is slidable within the housing on which the magazine is also arranged.
- the housing can be designed in several parts to achieve further functions.
- An axially displaceable pressure sensor interacts with the axially displaceable piston guide and, in the unpressurized state of the setting tool, projects beyond the end face of the driving direction.
- the pressure sensor is pushed back against the driving direction in the housing, which also involves moving the piston guide back with the associated activation of the tensioning device for the firing pin.
- the setting tool is thus ready for operation, which can be done by igniting the propellant charge.
- the setting tool described above fulfills the functions with regard to safety in connection with the pressing of the setting tool against the component.
- the functional reliability in connection with the feeding of the fastening elements into the bolt guide is not fully guaranteed.
- the housing in the area of the laterally protruding magazine has a through-opening for the fastening elements, which has a constant projection in all functional positions of the setting tool, there is a risk that, due to the feed mechanism for the fastening elements, they will be driven so far into the interior of the device, that the next following fastening element is also gripped by the driving piston.
- the invention has for its object to provide a powder-powered setting tool that on the one hand fulfills all safety requirements such that a propellant charge can only be ignited when the setting tool is pressed on, and on the other hand ensures that only the fastening element provided for driving is acted upon by the driving piston.
- the object is achieved in that the axially displaceable pressing device is designed as a bolt guide aligned with the driving piston and has a feed slot allowing the fastening elements with guide bushes to pass through.
- a bolt guide which is separate from the housing is available according to the solution according to the invention. This enables precise adjustment to the fastening elements including the guide bushes used for holding. This ensures that the fastening element is adequately guided during the entire driving-in process and that the driving piston acts exclusively on the fastening element to be driven effectively.
- the feed slot can take over a slide function with a corresponding design, ie the clear cross section of the feed slot can be designed in such a way that the fastening elements with the guide bushes can only enter in a certain position.
- the width of the feed slot in the entry area of the guide bushes advantageously corresponds essentially to the projection of the guide bushes in the feed direction and the width in the remaining area at least corresponds to the diameter of the exposed areas of the fastening elements. Areas are understood to mean the corresponding length of both the guide bushes and the other exposed areas of the fastening elements. So it arises width-offset feed slot, the greatest width of which is arranged in the end region counter to the driving-in direction after the fastening elements are held in the guide bushes in the rear region.
- guide bushes are used for the fastening elements, as are known, for example, from DE-A-36 06 901, ie guide bushes with guide areas of circular cross section adjoining an axial section on both sides, the area of the feed slot is expediently stepped out with a greater width.
- the stepped areas of the feed slot with a larger width and shoulders which have a smaller clear width, cooperate with the axial section of the guide bushes lying between the guide areas, so that a securing against rotation of the fastening elements is achieved.
- Such protection against rotation is particularly advantageous when it is the last fastener to be supplied or when only a few fasteners are connected to each other like a belt.
- the aforementioned slide function which arises from the axial displaceability of the pin guide, can act in two ways if the length of the individual areas is selected accordingly.
- One mode of operation consists in that when the device is pressed against it, the end region of the feed slot with a smaller width lying counter to the driving direction is at least partially pushed over the guide bushes, so that stops are formed in the transport direction of the fastening elements, which on the one hand prevent the propulsion of the next fastening element and on the other hand create perfect management conditions during the driving process.
- a fastening element is thus always pushed into the bolt guide in the unpressed position of the device by the feed mechanism of the magazine.
- the other mode of operation is that the entry area of the guide slot for the guide bushes in the unpressurized position of the device is axially offset in the driving direction in such a way that no fastening element can be driven into the bolt guide by the feed mechanism.
- the dimensioning of the feed slot is thus to be selected such that the entry area of the feed slot assigned to the guide bushes is aligned with the guide bushes only after overcoming at least part of the contact path of the pin guide, so that a fastening element can get into the pin guide.
- the result of this is that there is no fastening element in the bolt guide when the device is not pressed on, but that such a fastening element can only get into the bolt guide shortly before the ignition, that is to say after a part or the entire pressing path has been overcome.
- the length of the feed slot expediently corresponds at least to the length of the fastening elements.
- the feed slot is expediently designed to be open towards the end of the pin guide in the direction of driving.
- an anti-rotation device is preferably provided for the bolt guide.
- This protection against rotation can be ensured, for example, in a simple manner in that the bolt guide has a lateral flattening on its outer contour, which in turn has a corresponding flattening Flattening in the housing cooperates, this flattening can be provided in the housing, for example in the form of a separate, detachable part.
- the setting tool consists of a housing 1 within which a piston guide 2 and a pin guide 3 are axially displaceable and supported against one another.
- a driving piston 4 is also axially displaceable and is mounted on the one hand in the piston guide 2 and on the other hand in the pin guide 3.
- This driving piston 4 is driven by propellant charges, not shown in the drawing, which can be supplied, for example, in magazine form through a channel 5 passing through the housing 1 to a cartridge receptacle 6 of the piston guide 2.
- propellant charges are fed into the cartridge bearing 6 by moving the piston guide 2 back into the area of the channel 5, which occurs, for example, when the device is pressed against a component 10.
- the pin guide 3 pushes the piston guide 2 against Driving back direction, which also has the consequence that the firing pin 9 is tensioned via a pin 7, which acts on a tensioning device 8.
- the setting tool reaches its position ready for operation, as shown in FIG. 2.
- a laterally projecting magazine 1a is also arranged on the housing 1.
- This magazine 1 a is used to hold fastening elements 11, which are held in guide bushes 12 which are connected to one another in the manner of a belt.
- These guide bushes 12 have guide areas 12b, 12c on both sides of an axial section 12a.
- the fastening elements 11, together with their guide bushes 12, are fed through a feed mechanism (not shown in the drawing), the fastening elements 11 with the guide bushes 12 coming into the bolt guide 3 in the position of the device which is not pressed against the component 10, in accordance with the functioning principle of this exemplary embodiment. If the tensioning device 8 is triggered by a trigger 13 in the position of the device pressed against the component 10 according to FIG.
- the firing pin 9 strikes the propellant charge, not shown in the drawing, which is introduced into the cartridge bearing 6, so that the powder gases generated when it is ignited the driving piston 4 is accelerated in the setting direction.
- This acceleration has the consequence that one of the fastening elements 11 is driven into the component 10, which takes place while a guide bush 12 is sheared off from the adjacent guide bush 12.
- the sheared guide bush 12 thus serves as a guide for the fastening element 11 within the bolt guide 3 during the entire driving-in process.
- a through opening 1 b is aligned with the magazine 1 a in the housing 1, so that the fastening elements 11 together with their guide bushes 12 can be fed to the pin guide 3.
- the bolt guide 3 has, for feeding the fastening elements 11 together with their guide bushes 12, a feed slot 3a which, as shown in particular in FIG. 4, is graduated in width.
- This width is larger against the end in the direction of driving and essentially corresponds to the projection of the guide bushes 12 in the feed direction.
- the axial length of this area of greater width essentially corresponds to the axial length of the guide bushes 12 and is offset in such a way that shoulders 3c are formed.
- the clear width between these shoulders 3c is slightly larger than the correspondingly measured extent of the axial section 12a.
- the width of the feed slot 3a corresponds at least to the diameter of the exposed areas of the fastening elements 11.
- the aforesaid width gradation of the feed slot 3a has the result that when the bolt guide 3 is moved against the driving direction by pressing the setting tool against the component 10, that area of the feed slot 3a with a smaller width is at least one Part of the height of the guide bushes 12 covered. This results in a closure such that the next fastening element 11 cannot penetrate into the bolt guide 3 even under the action of the feed mechanism. This effect can be seen from FIG. 2 with the supplied fastening elements 11 together with their guide bushes 12.
- the bolt guide 3 has a flattened portion 3b as an anti-twist device, which flattens out 3b, which interacts with a correspondingly designed inner contour of the housing 1, as shown in particular in FIG. 3.
- 3 shows further details for the formation of the feed slot 3a, these details consisting in particular in that the feed slot 3a is tapered at the free ends in the region with a smaller width, so that when the bolt guide 3 is axially displaced counter to the driving-in direction in cooperation with the guide bushes 12 no disability arises.
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Abstract
Description
Die Erfindung betrifft ein pulverkraftbetriebenes Setzgerät mit Gehäuse, in welchem eine die eintreibrichtungsseitige Stirnseite des Gehäuses überragbare Anpresseinrichtung und eine der Führung eines Treibkolbens dienende Kolbenführung unter gegenseitiger axialer Anlage axial verschiebbar sind, wobei die Anpresseinrichtung und die Kolbenführung unter axialem Verschieben entgegen der Eintreibrichtung eine Spanneinrichtung für einen Zündbolzen spannen und wobei am Gehäuse ein seitlich abragendes, mit einer Durchtrittsöffnung im Gehäuse fluchtendes Magazin für die in gurtartig miteinander verbundenen Führungsbüchsen gehalterten Befestigungselemente angeordnet ist.The invention relates to a powder-operated setting tool with a housing, in which a pressing device that can project beyond the end face of the housing on the driving direction side and a piston guide that serves to guide a driving piston can be axially displaced under mutual axial contact, the pressing device and the piston guide being axially displaced counter to the driving direction, a tensioning device for tension a firing pin and a laterally protruding magazine aligned with a passage opening in the housing is arranged on the housing for the fastening elements held in guide bushes connected to one another in the manner of a belt.
Ein pulverkraftbetriebenes Setzgerät mit seitlich abragendem Magazin für Befestigungselemente, die in gurtartig miteinander verbundenen Führungsbüchsen geführt sind, ist beispielsweise aus der DE-A-36 06 514 bekannt. Auch bei diesem mit einem Magazin versehenen Setzgerät ist wie bei Einzelschussgeräten die Problematik zu lösen, dass das Gerät durch Zünden von Treibladungen nur dann in Betrieb gesetzt werden kann, wenn dieses gegen das Bauteil, in welches die Befestigungselemente eingetrieben werden sollen, gepresst wird. Nur so lassen sich Unfälle, welche beispielsweise zur Verletzung von Personen führen können, vermeiden.A powder-powered setting tool with a laterally projecting magazine for fastening elements which are guided in guide bushes connected to one another in the manner of a belt is known, for example, from DE-A-36 06 514. With this setting tool provided with a magazine, as with single-shot devices, the problem can be solved that the device can only be put into operation by igniting propellant charges if it is pressed against the component into which the fastening elements are to be driven. This is the only way to avoid accidents that can lead to personal injury.
Zur Sicherstellung der vorgenannten Funktion weist das erwähnte Setzgerät einen Zündbolzen für die Treibladungen auf, der nur dann gespannt ist, wenn das Setzgerät gegen das Bauteil gepresst wird. Zu diesem Zwecke ist eine Spanneinrichtung für den Zündbolzen vorgesehen, welche mit der axial verschiebbaren Kolbenführung zusammenwirkt. Diese Kolbenführung ist innerhalb des Gehäuses, an welchem auch das Magazin angeordnet ist, verschiebbar. Dabei kann zur Erzielung weiterer Funktionen das Gehäuse mehrteilig ausgebildet sein.To ensure the aforementioned function, the setting tool mentioned has an ignition pin for the propellant charges, which is only tensioned when the setting device is pressed against the component. For this purpose, a clamping device for the ignition pin is provided, which interacts with the axially displaceable piston guide. This piston guide is slidable within the housing on which the magazine is also arranged. The housing can be designed in several parts to achieve further functions.
Mit der axial verschiebbaren Kolbenführung wirkt ein ebenfalls axial verschiebbarer Anpressfühler zusammen, welcher in unangepresstem Zustand des Setzgerätes dessen eintreibrichtungsseitige Stirnseite überragt. Beim Anpressen des Setzgerätes gegen das Bauteil wird der Anpressfühler entgegen der Eintreibrichtung im Gehäuse zurückverschoben, was auch ein Zurückverschieben der Kolbenführung mit der damit verbundenen Aktivierung der Spanneinrichtung für den Zündbolzen verbunden ist. Somit ist das Setzgerät betriebsbereit, was unter Zünden der Treibladung erfolgen kann.An axially displaceable pressure sensor interacts with the axially displaceable piston guide and, in the unpressurized state of the setting tool, projects beyond the end face of the driving direction. When the setting tool is pressed against the component, the pressure sensor is pushed back against the driving direction in the housing, which also involves moving the piston guide back with the associated activation of the tensioning device for the firing pin. The setting tool is thus ready for operation, which can be done by igniting the propellant charge.
An sich erfüllt das vorstehend geschilderte Setzgerät die Funktionen hinsichtlich Sicherheit im Zusammenhang mit dem Anpressen des Setzgerätes gegen das Bauteil. Dagegen ist die Funktionssicherheit im Zusammenhang mit der Zuführung der Befestigungselemente in die Bolzenführung nicht vollumfänglich gewährleistet. Dadurch, dass das Gehäuse im Bereich des seitlich abragenden Magazins eine Durchtrittsöffnung für die Befestigungselemente aufweist, welche eine in allen Funktionsstellungen des Setzgerätes konstante lichte Projektion aufweist, besteht die Gefahr, dass aufgrund des Zuführmechanismus für die Befestigungselemente diese derart weit in das Geräteinnere vorgetrieben werden, dass vom Treibkolben auch das nächstfolgende Befestigungselement erfasst wird. Dies hat zur Folge, dass einerseits das effektiv zum Eintreiben vorgesehene Befestigungselement aufgrund des zur Verfügung stehenden Freiraumes ordnungsgemäss in das Bauteil eingetrieben wird, dass aber das nächstfolgende Befestigungselement, für das kein Freiraum zur Verfügung steht, sich im Gehäuse oder im Magazin verklemmt und zu Funktionsstörungen führt. Im Extremfalle kann sich dieses nächstfolgende Befestigungselement selbst einen Weg suchen und beispielsweise durch Zerstörung von Wandungsteilen des Gehäuses oder des Magazins aus dem Setzgerät heraustreten.As such, the setting tool described above fulfills the functions with regard to safety in connection with the pressing of the setting tool against the component. In contrast, the functional reliability in connection with the feeding of the fastening elements into the bolt guide is not fully guaranteed. Because the housing in the area of the laterally protruding magazine has a through-opening for the fastening elements, which has a constant projection in all functional positions of the setting tool, there is a risk that, due to the feed mechanism for the fastening elements, they will be driven so far into the interior of the device, that the next following fastening element is also gripped by the driving piston. This means that on the one hand the fastener that is effectively intended to be driven in is properly driven into the component due to the free space available, but that the next fastener for which there is no free space is jammed in the housing or in the magazine and leads to malfunctions leads. In extreme cases, this next fastening element can find a way for itself and can emerge from the setting tool, for example by destroying wall parts of the housing or the magazine.
Der Erfindung liegt die Aufgabe zugrunde, ein pulverkraftbetriebenes Setzgerät zu schaffen, das einerseits sämtliche Sicherheitsanforderungen dahingehend, dass nur bei angepresstem Setzgerät eine Treibladung gezündet werden kann, erfüllt und andererseits sichergestellt ist, dass vom Treibkolben ausschliesslich das zum Eintreiben vorgesehene Befestigungselement beaufschlagt wird.The invention has for its object to provide a powder-powered setting tool that on the one hand fulfills all safety requirements such that a propellant charge can only be ignited when the setting tool is pressed on, and on the other hand ensures that only the fastening element provided for driving is acted upon by the driving piston.
Erfindungsgemäss wird die Aufgabe dadurch gelöst, dass die axial verschiebbare Anpresseinrichtung als mit dem Treibkolben fluchtende Bolzenführung ausgebildet ist und einen den Durchtritt der Befestigungselemente mit Führungsbüchsen erlaubenden Zuführschlitz aufweist.According to the invention, the object is achieved in that the axially displaceable pressing device is designed as a bolt guide aligned with the driving piston and has a feed slot allowing the fastening elements with guide bushes to pass through.
Im Gegensatz zur herkömmlichen Lösung, wo das eintreibrichtungsseitige Ende des Gehäuses die Funktion einer Bolzenführung übernommen hat, steht nach der erfindungsgemässen Lösung eine gegenüber dem Gehäuse separate Bolzenführung zur Verfügung. Dies ermöglicht eine präzise Abstimmung auf die Befestigungselemente samt den zur Halterung dienenden Führungsbüchsen. Somit ist sichergestellt, dass während des gesamten Eintreibvorganges das Befestigungselement ausreichend geführt ist und der Treibkolben ausschliesslich auf das effektiv einzutreibende Befestigungselement wirkt.In contrast to the conventional solution, where the end of the housing on the driving-in direction has taken on the function of a bolt guide, a bolt guide which is separate from the housing is available according to the solution according to the invention. This enables precise adjustment to the fastening elements including the guide bushes used for holding. This ensures that the fastening element is adequately guided during the entire driving-in process and that the driving piston acts exclusively on the fastening element to be driven effectively.
Durch die axiale Verschiebbarkeit der Bolzenführung kann der Zuführschlitz bei entsprechender Ausgestaltung quasi eine Schieberfunktion übernehmen, dh der lichte Querschnitt des Zuführschlitzes kann derart ausgestaltet sein, dass der Eintritt der Befestigungselemente mit den Führungsbüchsen nur in einer bestimmten Stellung möglich ist. Zu diesem Zwecke entspricht vorteilhafterweise die Breite des Zuführschlitzes im Eintrittsbereich der Führungsbüchsen im wesentlichen der Projektion der Führungsbüchsen in Zuführrichtung und die Breite im restlichen Bereich mindestens dem Durchmesser der freiliegenden Bereiche der Befestigungselemente. Dabei wird unter Bereichen die jeweils entsprechende Länge sowohl der Führungsbüchsen als auch der übrigen freiliegenden Bereiche der Befestigungselemente verstanden. Es entsteht somit ein in der Breite abgesetzter Zuführschlitz, wobei dessen grösste Breite im Endbereich entgegen der Eintreibrichtung angeordnet ist, nachdem die Befestigungselemente im rückwärtigen Bereich in den Führungsbüchsen gehaltert sind.Due to the axial displaceability of the bolt guide, the feed slot can take over a slide function with a corresponding design, ie the clear cross section of the feed slot can be designed in such a way that the fastening elements with the guide bushes can only enter in a certain position. For this purpose, the width of the feed slot in the entry area of the guide bushes advantageously corresponds essentially to the projection of the guide bushes in the feed direction and the width in the remaining area at least corresponds to the diameter of the exposed areas of the fastening elements. Areas are understood to mean the corresponding length of both the guide bushes and the other exposed areas of the fastening elements. So it arises width-offset feed slot, the greatest width of which is arranged in the end region counter to the driving-in direction after the fastening elements are held in the guide bushes in the rear region.
Werden Führungsbüchsen für die Befestigungselemente verwendet, wie sie beispielsweise aus der DE-A-36 06 901 bekannt sind, dh Führungsbüchsen mit beidseitig an einen axialen Abschnitt anschliessenden Führungsbereichen von kreisrundem Querschnitt, ist zweckmässigerweise der Bereich des Zuführschlitzes mit grösserer Breite entsprechend abgesetzt. Somit bilden die abgesetzten eine kleinere lichte Weite aufweisenden Bereiche des Zuführschlitzes mit grösserer Breite Schultern, welche mit dem zwischen den Führungsbereichen liegenden axialen Abschnitt der Führungsbüchsen zusammenwirken, so dass dadurch eine Sicherung gegen Verdrehen der Befestigungselemente erzielt wird. Eine solche Sicherung gegen Verdrehen ist insbesondere dann von Vorteil, wenn es sich um das letzte zuzuführende Befestigungselement handelt oder wenn nur noch wenige Befestigungselement gurtartig miteinander verbunden sind.If guide bushes are used for the fastening elements, as are known, for example, from DE-A-36 06 901, ie guide bushes with guide areas of circular cross section adjoining an axial section on both sides, the area of the feed slot is expediently stepped out with a greater width. Thus, the stepped areas of the feed slot with a larger width and shoulders, which have a smaller clear width, cooperate with the axial section of the guide bushes lying between the guide areas, so that a securing against rotation of the fastening elements is achieved. Such protection against rotation is particularly advantageous when it is the last fastener to be supplied or when only a few fasteners are connected to each other like a belt.
Die vorgenannte Schieberfunktion, die durch die axiale Verschiebbarkeit der Bolzenführung entsteht, kann bei entsprechender Längenwahl der einzelnen Bereiche in zweifacher Weise wirken.The aforementioned slide function, which arises from the axial displaceability of the pin guide, can act in two ways if the length of the individual areas is selected accordingly.
Die eine Funktionsweise besteht darin, dass beim Anpressen des Gerätes der entgegen der Eintreibrichtung liegende Endbereich des Zuführschlitzes mit geringerer Breite zumindest teilweise über die Führungsbüchsen geschoben wird, so dass in Transportrichtung der Befestigungselemente Anschläge gebildet werden, welche einerseits den Vortrieb des nächstfolgenden Befestigungselementes verhindern und andererseits während des Eintreibvorganges einwandfreie Führungsbedingungen schaffen. Bei dieser Ausgestaltung des Zuführschlitzes wird damit in unangepresster Stellung des Gerätes durch den Zuführmechanismus des Magazins immer ein Befestigungselement in die Bolzenführung geschoben.One mode of operation consists in that when the device is pressed against it, the end region of the feed slot with a smaller width lying counter to the driving direction is at least partially pushed over the guide bushes, so that stops are formed in the transport direction of the fastening elements, which on the one hand prevent the propulsion of the next fastening element and on the other hand create perfect management conditions during the driving process. In this embodiment of the feed slot, a fastening element is thus always pushed into the bolt guide in the unpressed position of the device by the feed mechanism of the magazine.
Die andere Funktionsweise besteht darin, dass der Eintrittsbereich des Führungsschlitzes für die Führungsbüchsen in unangepresster Stellung des Gerätes in Eintreibrichtung axial derart versetzt ist, dass vom Zuführmechanismus kein Befestigungselement in die Bolzenführung hineingetrieben werden kann. Die Dimensionierung des Zuführschlitzes ist damit so zu wählen, dass erst nach Ueberwindung wenigstens eines Teiles des Anpressweges der Bolzenführung der den Führungsbüchsen zugeordnete Eintrittsbereich des Zuführschlitzes mit den Führungsbüchsen fluchtet, so dass ein Befestigungselement in die Bolzenführung gelangen kann. Dies hat zur Folge, dass in unangepresster Stellung des Gerätes sich kein Befestigungselement in der Bolzenführung befindet, dass aber ein solches erst kurz vor der Zündung, dh nach Ueberwindung eines Teiles oder des gesamten Anpressweges ein Befestigungselement in die Bolzenführung gelangen kann. Auch bei dieser Funktionsweise wird einerseits der Vortrieb des nächstfolgenden Befestigungselementes verhindert und andererseits während des gesamten Eintreibvorganges einwandfreie Führungsbedingungen geschaffen.The other mode of operation is that the entry area of the guide slot for the guide bushes in the unpressurized position of the device is axially offset in the driving direction in such a way that no fastening element can be driven into the bolt guide by the feed mechanism. The dimensioning of the feed slot is thus to be selected such that the entry area of the feed slot assigned to the guide bushes is aligned with the guide bushes only after overcoming at least part of the contact path of the pin guide, so that a fastening element can get into the pin guide. The result of this is that there is no fastening element in the bolt guide when the device is not pressed on, but that such a fastening element can only get into the bolt guide shortly before the ignition, that is to say after a part or the entire pressing path has been overcome. With this mode of operation, on the one hand, the propulsion of the next fastening element is prevented and, on the other hand, perfect guiding conditions are created during the entire driving-in process.
Um den Eintritt der Befestigungselemente in die Bolzenführung ausreichend sicherzustellen, entspricht zweckmässigerweise die Länge des Zuführschlitzes mindestens der Länge der Befestigungselemente. Einerseits zur Erfüllung dieser Forderung und andererseits zur Erzielung einer einfachen wirtschaftlichen Herstellung der Bolzenführung ist zweckmässigerweise der Zuführschlitz zum eintreibrichtungsseitigen Ende der Bolzenführung hin offen ausgebildet.In order to ensure that the fastening elements enter the bolt guide sufficiently, the length of the feed slot expediently corresponds at least to the length of the fastening elements. On the one hand to meet this requirement and on the other hand to achieve simple economical production of the pin guide, the feed slot is expediently designed to be open towards the end of the pin guide in the direction of driving.
Um sicherzustellen, dass der Zuführschlitz immer ausreichend mit der Durchttrittsöffnung im Gehäuse fluchtet und dadurch der Eintritt der Befestigungselemente in die Bolzenführung nicht behindert wird, ist vorzugsweise eine Verdrehsicherung für die Bolzenführung vorgesehen. Diese Verdrehsicherung kann beispielsweise in einfacher Weise dadurch sichergestellt werden, dass die Bolzenführung an ihrer Aussenkontur eine seitliche Abflachung aufweist, die ihrerseits mit einer entsprechenden Abflachung im Gehäuse zusammenwirkt, wobei diese Abflachung im Gehäuse beispielsweise in Form eines separaten, lösbaren Teiles vorgesehen sein kann.In order to ensure that the feed slot is always sufficiently aligned with the passage opening in the housing and that the entry of the fastening elements into the bolt guide is not hindered, an anti-rotation device is preferably provided for the bolt guide. This protection against rotation can be ensured, for example, in a simple manner in that the bolt guide has a lateral flattening on its outer contour, which in turn has a corresponding flattening Flattening in the housing cooperates, this flattening can be provided in the housing, for example in the form of a separate, detachable part.
Die Erfindung wird nachstehend anhand von Zeichnungen, die ein Ausführungsbeispiel wiedergebenden, näher erläutert. Es zeigen:
- Fig. 1 das erfindungsgemässe Setzgerät in Ruhe- und Ladestellung teilweise im Längsschnitt;
- Fig. 2 den vorderen Teil des Setzgerätes entsprechend Fig. 1 in vergrösserter Darstellung und in gegen ein Bauteil gepresster setzbereiter Stellung;
- Fig. 3 einen Schnitt längs der Linie III-III entsprechend Fig. 2;
- Fig. 4 die Bolzenführung in Ansicht entsprechend Pfeil IV der Fig. 2 in strichpunktiert angedeuteter Wiederladestellung.
- 1 shows the setting tool according to the invention in the rest and loading position, partly in longitudinal section;
- FIG. 2 shows the front part of the setting tool corresponding to FIG. 1 in an enlarged representation and in a position ready for setting pressed against a component;
- Fig. 3 is a section along the line III-III corresponding to Fig. 2;
- Fig. 4 shows the bolt guide in a view corresponding to arrow IV of Fig. 2 in dash-dot indicated reloading position.
Wie die Fig. 1 bis 3, insbesondere die Fig. 1 zeigt, besteht das erfindungsgemässe Setzgerät aus einem Gehäuse 1, innerhalb welchem sich axial verschiebbar und gegeneinander abgestützt eine Kolbenführung 2 und eine Bolzenführung 3 befinden. Ebenfalls axial verschiebbar ist ein Treibkolben 4 angeordnet, welcher einerseits in der Kolbenführung 2 und andererseits in der Bolzenführung 3 gelagert ist. Angetrieben wird dieser Treibkolben 4 durch zeichnerisch nicht dargestellte Treibladungen, welche beispielsweise in magazinierter Form durch einen das Gehäuse 1 durchquerenden Kanal 5 einer Kartuschenaufnahme 6 der Kolbenführung 2 zugeführt werden können. Das Zuführen solcher Treibladungen in das Kartuschenlager 6 erfolgt durch Zurückverschieben der Kolbenführung 2 in den Bereich des Kanals 5, was beispielsweise beim Anpressen des Gerätes gegen ein Bauteil 10 erfolgt. In diesem Falle schiebt die Bolzenführung 3 die Kolbenführung 2 entgegen der Eintreibrichtung zurück, was zudem zur Folge hat, dass über einen Stift 7, der auf eine Spanneinrichtung 8 einwirkt, der Zündbolzen 9 gespannt wird. Dadurch erreicht das Setzgerät seine betriebsbereite Position, wie dies in Fig. 2 dargestellt ist.1 to 3, in particular FIG. 1, the setting tool according to the invention consists of a
Am Gehäuse 1 ist ferner ein seitlich abragendes Magazin 1a angeordnet. Dieses Magazin 1a dient der Aufnahme von Befestigungselementen 11, welche in gurtartig miteinander verbundenen Führungsbüchsen 12 gehaltert sind. Diese Führungsbüchsen 12 weisen beidseitig eines axialen Abschnittes 12a Führungsbereiche 12b, 12c auf. Durch einen zeichnerisch nicht dargestellten Zuführmechanismus werden die Befestigungselemente 11 samt ihren Führungsbüchsen 12 zugeführt, wobei die Befestigungselemente 11 mit den Führungsbüchsen 12 entsprechend der diesem Ausführungsbeispiel zugrundeliegende Funktionsweise in nicht gegen das Bauteil 10 gepresster Stellung des Gerätes in die Bolzenführung 3 gelangen. Wird in der gegen das Bauteil 10 gepressten Stellung des Gerätes entsprechend Fig. 2 die Spanneinrichtung 8 mittels eines Triggers 13 ausgelöst, schlägt der Zündbolzen 9 auf die zeichnerisch nicht dargestellte, in das Kartuschenlager 6 eingeführte Treibladung, so dass durch die bei deren Zündung erzeugten Pulvergase der Treibkolben 4 in Setzrichtung beschleunigt wird. Diese Beschleunigung hat zur Folge, dass eines der Befestigungselemente 11 in das Bauteil 10 eingetrieben wird, was unter Abscheren einer Führungsbüchse 12 von der benachbarten Führungsbüchse 12 erfolgt. Die abgescherte Führungsbüchse 12 dient somit während des gesamten Eintreibvorganges als Führung für das Befestigungselement 11 innerhalb der Bolzenführung 3.A laterally projecting
Wie die Fig. 1 bis 3 zeigen, fluchtet mit dem Magazin 1a eine Durchtrittsöffnung Ib im Gehäuse 1, so dass die Befestigungselemente 11 samt ihren Führungsbüchsen 12 der Bolzenführung 3 zugeführt werden können. Die Bolzenführung 3 weist zur Zuführung der Befestigungselemente 11 samt ihren Führungsbüchsen 12 einen Zuführschlitz 3a auf, welcher, wie dies insbesondere Fig. 4 zeigt, in der Breite abgestuft ist.As shown in FIGS. 1 to 3, a through opening 1 b is aligned with the
Diese Breite ist entgegen dem eintreibrichtungsseitigen Ende grösser und entspricht im wesentlichen der Projektion der Führungsbüchsen 12 in Zuführrichtung. Die axiale Länge dieses Bereiches mit grösserer Breite entspricht im wesentlichen der axialen Länge der Führungsbüchsen 12 und ist derart abgesetzt, dass sich Schultern 3c bilden. Die lichte Weite zwischen diesen Schultern 3c ist geringfügig grösser als die entsprechend gemessene Erstreckung des axialen Abschnittes 12a. Im restlichen Bereich entspricht die Breite des Zuführschlitzes 3a mindestens dem Durchmesser der freiliegenden Bereiche der Befestigungselemente 11.This width is larger against the end in the direction of driving and essentially corresponds to the projection of the
Wie insbesondere Fig. 2 zeigt, hat bei der diesem Ausführungsbeispiel zugrundeliegenden Funktionsweise die vorgenannte Breitenabstufung des Zuführschlitzes 3a zur Folge, dass bei Verschieben der Bolzenführung 3 entgegen der Eintreibrichtung unter Anpressen des Setzgerätes gegen das Bauteil 10 jener Bereich des Zuführschlitzes 3a mit geringerer Breite zumindest einen Teil der Höhe der Führungsbüchsen 12 überdeckt. Dadurch entsteht ein derartiger Verschluss, dass selbst unter Wirkung des Zuführmechanismus das nächstfolgende Befestigungselement 11 nicht in die Bolzenführung 3 eindringen kann. Dieser Effekt ist aus Fig. 2 mit den zugeführten Befestigungselementen 11 samt ihren Führungsbüchsen 12 ersichtlich.As shown in FIG. 2 in particular, in the mode of operation on which this exemplary embodiment is based, the aforesaid width gradation of the
Um sicherzustellen, dass Zuführschlitz 3a und Durchtrittsöffnung 1b aufeinander ausgerichtet bleiben, weist als Verdrehsicherung die Bolzenführung 3 eine Abflachung 3b auf, welche mit einer entsprechend ausgebildeten Innenkontur des Gehäuses 1 zusammenwirkt, wie dies insbesondere Fig. 3 zeigt. Im übrigen zeigt die Fig. 3 weitere Details zur Ausbildung des Zuführschlitzes 3a, wobei diese Details insbesondere darin bestehen, dass der Zuführschlitz 3a im Bereich mit geringerer Breite an den freien Enden verjüngt ausgebildet ist, so dass beim axialen Verschieben der Bolzenführung 3 entgegen der Eintreibrichtung im Zusammenwirken mit den Führungsbüchsen 12 keine Behinderung entsteht.In order to ensure that the
Claims (6)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4122873A DE4122873A1 (en) | 1991-07-11 | 1991-07-11 | POWDER-POWERED SETTING UNIT WITH MAGAZINE FOR FASTENING ELEMENTS |
| DE4122873 | 1991-07-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0522996A1 true EP0522996A1 (en) | 1993-01-13 |
| EP0522996B1 EP0522996B1 (en) | 1994-12-14 |
Family
ID=6435856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92810192A Expired - Lifetime EP0522996B1 (en) | 1991-07-11 | 1992-03-17 | Powder-actuated fastening tool with magazine for fasteners |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US5220123A (en) |
| EP (1) | EP0522996B1 (en) |
| JP (1) | JPH05192877A (en) |
| KR (1) | KR100201176B1 (en) |
| AT (1) | ATE115457T1 (en) |
| AU (1) | AU651212B2 (en) |
| CA (1) | CA2073639C (en) |
| DE (2) | DE4122873A1 (en) |
| DK (1) | DK0522996T3 (en) |
| FI (1) | FI105663B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2713128A1 (en) * | 1993-11-29 | 1995-06-09 | Hilti Ag | Sealing tool for installing fasteners in receiving materials. |
| EP0743141A1 (en) * | 1995-05-15 | 1996-11-20 | HILTI Aktiengesellschaft | Powder-actuated fastening tool with magazine for fasteners |
| EP0836914A1 (en) * | 1996-10-19 | 1998-04-22 | Adolf Würth GmbH & Co. KG | Bolt driving tool |
| EP0862971A2 (en) * | 1997-03-08 | 1998-09-09 | Beto-Tornado GmbH | Bolt magazine strip |
| CN106078620A (en) * | 2016-07-25 | 2016-11-09 | 临海市微能铸机有限公司 | Nailing gun |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19532411A1 (en) * | 1995-09-01 | 1997-03-06 | Hilti Ag | Powder-powered setting tool |
| US5722578A (en) * | 1995-09-29 | 1998-03-03 | Illinois Tool Works Inc. | High velocity, combustion-powered, fastener-driving tool |
| DE19544105A1 (en) * | 1995-11-27 | 1997-05-28 | Hilti Ag | Bolt setting tool with shock absorber |
| US6010513A (en) * | 1997-11-26 | 2000-01-04 | Bionx Implants Oy | Device for installing a tissue fastener |
| US5988477A (en) * | 1998-06-03 | 1999-11-23 | Illinois Tools Works, Inc. | Nosepiece shield for combustion powered tool |
| DE19831060A1 (en) * | 1998-07-13 | 2000-01-20 | Hilti Ag | Setting tool with nail magazine |
| EP0987086A3 (en) * | 1998-09-18 | 2000-12-20 | Ramset Fasteners (Aust.) Pty. Ltd. | Power actuated tools with magazine feed |
| US6059162A (en) * | 1998-10-16 | 2000-05-09 | Illinois Tool Works Inc. | Exhaust baffle and spring assisted reset and dampener for powder actuated tool |
| US6343535B1 (en) * | 1999-07-13 | 2002-02-05 | Powers Fastening, Inc. | Device for advancing charges in a powder-actuated tool, and improved tool including the same |
| DE19950349B4 (en) * | 1999-10-19 | 2006-07-27 | Hilti Ag | Setting tool for fastening elements |
| DE10136509A1 (en) * | 2001-07-20 | 2003-01-30 | Wuerth Adolf Gmbh & Co Kg | Arrangement for feeding bolts to a bolt pusher |
| US6568302B2 (en) | 2001-08-10 | 2003-05-27 | Illinois Tool Works Inc | Telescoping support device for fastener driving tool |
| US6641021B2 (en) * | 2002-03-25 | 2003-11-04 | Illinois Toolworks Inc. | Magazine rail system for fastener-driving tool |
| US6708821B2 (en) * | 2002-08-21 | 2004-03-23 | Illinois Tool Works Inc. | Fastener collation strip and debris exhaust mechanism |
| US7021511B2 (en) * | 2002-09-18 | 2006-04-04 | Illinois Tool Works Inc. | Lock-out mechanism for powder actuated tool |
| US6834788B2 (en) | 2002-09-18 | 2004-12-28 | Illinois Tool Works Inc. | Magazine assembly with stabilizing members |
| FR2865427B1 (en) * | 2004-01-23 | 2006-04-28 | Prospection & Inventions | INDIRECT FIRING APPARATUS FOR SEALING FASTENING ELEMENTS IN A SUPPORT MATERIAL |
| US7971768B2 (en) * | 2004-05-04 | 2011-07-05 | Illinois Tool Works Inc. | Guidance system for fasteners |
| US7328826B2 (en) * | 2005-03-28 | 2008-02-12 | Illinois Tool Works Inc. | Power nailer with driver blade blocking mechanism magazine |
| TW200927397A (en) * | 2007-12-25 | 2009-07-01 | Chung-Heng Lee | Firing apparatus for powder-actuated nail gun |
| DE102009016947A1 (en) * | 2009-04-08 | 2010-10-14 | Fischerwerke Gmbh & Co. Kg | Internal combustion setting device |
| KR102200654B1 (en) * | 2020-01-16 | 2021-01-08 | 한겸진 | Striker for anchor nail |
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| FR2106135A5 (en) * | 1970-08-28 | 1972-04-28 | Hilti Ag | |
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| DE3606901A1 (en) * | 1986-03-03 | 1987-09-10 | Hilti Ag | NAIL STRIP |
| EP0237477A2 (en) * | 1986-03-12 | 1987-09-16 | HILTI Aktiengesellschaft | Powder-actuated setting tool |
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| DE3606514A1 (en) * | 1986-02-28 | 1987-09-03 | Hilti Ag | POWDER POWERED BOLT SETTING DEVICE |
| DE3806626C2 (en) * | 1988-03-02 | 1997-04-24 | Hilti Ag | Powder-powered setting tool |
| DE3806625A1 (en) * | 1988-03-02 | 1989-09-14 | Hilti Ag | POWDER POWERED SETTING DEVICE |
| DE4015449A1 (en) * | 1990-05-14 | 1991-11-21 | Hilti Ag | POWDER POWERED SETTING DEVICE |
-
1991
- 1991-07-11 DE DE4122873A patent/DE4122873A1/en not_active Withdrawn
-
1992
- 1992-03-17 AT AT92810192T patent/ATE115457T1/en not_active IP Right Cessation
- 1992-03-17 DE DE59200954T patent/DE59200954D1/en not_active Expired - Lifetime
- 1992-03-17 EP EP92810192A patent/EP0522996B1/en not_active Expired - Lifetime
- 1992-03-17 DK DK92810192.2T patent/DK0522996T3/en active
- 1992-06-11 AU AU18194/92A patent/AU651212B2/en not_active Expired
- 1992-06-26 JP JP4169653A patent/JPH05192877A/en active Pending
- 1992-07-07 FI FI923119A patent/FI105663B/en active
- 1992-07-08 US US07/910,462 patent/US5220123A/en not_active Expired - Lifetime
- 1992-07-10 KR KR1019920012272A patent/KR100201176B1/en not_active IP Right Cessation
- 1992-07-10 CA CA002073639A patent/CA2073639C/en not_active Expired - Fee Related
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| FR2106135A5 (en) * | 1970-08-28 | 1972-04-28 | Hilti Ag | |
| DE2314920A1 (en) * | 1973-03-26 | 1974-10-03 | Rapid Befestigungstech Gmbh | BOLT FASTENER WITH BOLT MAGAZINE |
| DE3606901A1 (en) * | 1986-03-03 | 1987-09-10 | Hilti Ag | NAIL STRIP |
| EP0237477A2 (en) * | 1986-03-12 | 1987-09-16 | HILTI Aktiengesellschaft | Powder-actuated setting tool |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2713128A1 (en) * | 1993-11-29 | 1995-06-09 | Hilti Ag | Sealing tool for installing fasteners in receiving materials. |
| US5642848A (en) * | 1993-11-29 | 1997-07-01 | Hilti Aktiengesellschaft | Tool for driving fastening elements into a receiving material |
| EP0743141A1 (en) * | 1995-05-15 | 1996-11-20 | HILTI Aktiengesellschaft | Powder-actuated fastening tool with magazine for fasteners |
| EP0836914A1 (en) * | 1996-10-19 | 1998-04-22 | Adolf Würth GmbH & Co. KG | Bolt driving tool |
| EP0862971A2 (en) * | 1997-03-08 | 1998-09-09 | Beto-Tornado GmbH | Bolt magazine strip |
| EP0862971A3 (en) * | 1997-03-08 | 1999-04-07 | Beto-Tornado GmbH | Bolt magazine strip |
| CN106078620A (en) * | 2016-07-25 | 2016-11-09 | 临海市微能铸机有限公司 | Nailing gun |
| CN106078620B (en) * | 2016-07-25 | 2018-02-09 | 临海市微能铸机有限公司 | Nailing gun |
Also Published As
| Publication number | Publication date |
|---|---|
| FI923119A (en) | 1993-01-12 |
| EP0522996B1 (en) | 1994-12-14 |
| AU651212B2 (en) | 1994-07-14 |
| KR100201176B1 (en) | 1999-06-15 |
| DE59200954D1 (en) | 1995-01-26 |
| KR930002041A (en) | 1993-02-22 |
| DE4122873A1 (en) | 1993-01-14 |
| CA2073639C (en) | 1998-09-22 |
| DK0522996T3 (en) | 1995-05-15 |
| JPH05192877A (en) | 1993-08-03 |
| ATE115457T1 (en) | 1994-12-15 |
| FI923119A0 (en) | 1992-07-07 |
| CA2073639A1 (en) | 1993-01-12 |
| US5220123A (en) | 1993-06-15 |
| FI105663B (en) | 2000-09-29 |
| AU1819492A (en) | 1993-01-14 |
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