EP0248101B1 - Mechanism for feeding fasteners mounted on magazine strips to an application tool - Google Patents

Mechanism for feeding fasteners mounted on magazine strips to an application tool Download PDF

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Publication number
EP0248101B1
EP0248101B1 EP86107680A EP86107680A EP0248101B1 EP 0248101 B1 EP0248101 B1 EP 0248101B1 EP 86107680 A EP86107680 A EP 86107680A EP 86107680 A EP86107680 A EP 86107680A EP 0248101 B1 EP0248101 B1 EP 0248101B1
Authority
EP
European Patent Office
Prior art keywords
magazine strip
lever
shaft
screwer
feed
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.)
Expired
Application number
EP86107680A
Other languages
German (de)
French (fr)
Other versions
EP0248101A1 (en
Inventor
Gerhard Dipl.-Ing. Bögel
Guido Hasler
Ernst Rüttimann
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.)
SFS Group International AG
Original Assignee
SFS Stadler 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 SFS Stadler AG filed Critical SFS Stadler AG
Priority to DE8686107680T priority Critical patent/DE3664741D1/en
Priority to AT86107680T priority patent/ATE45116T1/en
Priority to EP86107680A priority patent/EP0248101B1/en
Priority to NO872345A priority patent/NO164084C/en
Publication of EP0248101A1 publication Critical patent/EP0248101A1/en
Application granted granted Critical
Publication of EP0248101B1 publication Critical patent/EP0248101B1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/02—Arrangements for handling screws or nuts
    • B25B23/04—Arrangements for handling screws or nuts for feeding screws or nuts
    • B25B23/045—Arrangements for handling screws or nuts for feeding screws or nuts using disposable strips or discs carrying the screws or nuts

Definitions

  • the invention relates to a fastener held in a magazine strip for a setting device, the magazine strip being movable further before or after each setting process, and a feed lock which engages in the feed channel for the magazine strip and is releasable and reusable after each setting process is provided. wherein a drive wheel is provided which engages in a feed channel for the magazine strip and can be brought into operative connection therewith.
  • Some versions of a feed lock have also become known, which are intended to ensure that the magazine strip can be fixed in the respective setting position, but these known designs are of quite complicated construction and in some cases even are designed as a unit with the feed device, so that this results in a slower feed given is.
  • a feed device for a magazine strip is also known (US Pat. No. 4,139,036), in which a drive wheel which can be rotated by hand engages in a perforation provided on a longitudinal side region of the magazine strip. Perforation is also provided on the opposite side longitudinal boundary of the magazine strip, and a spring held on the feed device can snap into it as a feed lock. After each setting process, the magazine strip must be turned further by hand, this feed must be slow so that the feed lock does not simply spring over the next opening of the lateral perforation.
  • the present invention has therefore set itself the task of creating a simple and exact feed possibility and a simple feed lock for the magazine strip in order to bring this and thus the fasteners arranged therein quickly and reliably into the following setting position.
  • the drive wheel can be connected directly or indirectly via a friction clutch arranged in a screwdriver shaft to the rotary drive of the setting tool, and a feed lock designed as a pivotably mounted lever which is held in the locked locking position and acts as a stop for locking cams projecting on the magazine strip Feed channel for the magazine strip engages and its pivoting causes the screwdriver shaft.
  • the measures according to the invention have also made it possible to guide the feed of the magazine strip in a very simple manner from the rotary drive, since a friction clutch is interposed, so that the drive wheel and thus the magazine strip can stop as soon as possible regardless of the further rotary movement of the screw shaft Magazine strip is held by the feed lock.
  • Such an arrangement according to the invention is also practically maintenance-free and also ... grown even rough construction site operation, since no protruding, filigree transport levers are required.
  • the device is described with the aid of a setting tool which is used to screw in screws, preferably self-drilling and thread-cutting screws.
  • a setting tool which is used to screw in screws, preferably self-drilling and thread-cutting screws.
  • Such a device is equally suitable for setting differently designed screws, self-drilling rivets, bolts or the like.
  • the device essentially consists of the setting tool 1 and the setting tool drive 2, the setting device 1 being secured against rotation relative to the setting device drive 2.
  • a screwdriver shaft 3, which is mounted in the setting tool 1, is coupled to the setting tool drive 2.
  • a snap-in coupling 4 is then provided directly on the screwdriver shaft 3, so that the screw nut 5 can grip the head 6 of a screw 7 without any particular torque, the clutch 4 only engaging and thus engaging when the screwdriver shaft 3 is depressed further the rotary drive of the setting tool drive 2 has a full effect on the screw 7.
  • a normal drilling machine can be used as setting tool drive 2.
  • a snap-in coupling is generally integrated in the setting tool drive 2, the screwing shaft 3 executing a rotary movement only when the snap-in coupling is engaged in the setting tool drive 2.
  • the helical spring 59 acts on the snap-in coupling which may be arranged in the setting tool drive 2, the force of the spring 49 being greater than the spring provided in the snap-in coupling integrated in the setting tool drive 2, so that the snap-in coupling integrated in the setting tool drive 2 is practically always closed.
  • the screwdriver shaft 3 carries out a constant rotary movement as soon as the setting tool drive 2 is started up.
  • a rotary drive is maintained as is required for the transport of the magazine strip 18 by a drive wheel 20, which will be explained in more detail later.
  • a clamping part 9 is fastened to a cylindrical extension 8 of the setting tool drive 2, which also carries a guide rod 10, the free end of which engages in an indentation in a projection 11 of the setting device 1. During the entire screwing operation, the shoulder 11 can thus be displaced along the guide rod 10, and thus the setting tool 1 is secured against rotation relative to the setting tool drive 2.
  • An adjustment screw 12 is also provided on the setting tool 1, with which the screwing depth can be determined.
  • the lower end collar 14 of the coupling 4 comes to a stop depending on the setting height of the adjusting screw 12 on the upper head 13 of this adjusting screw 12, so that the screwing process is ended because the coupling 4 disengages shortly after contacting the head 13 and thus the screw nut 5 is no longer connected to the setting tool drive 2.
  • a groove 60 is provided behind the head 13 of the adjusting screw 12, an arcuate recess being present in the head 13 itself. There is thereby the possibility that the end collar 14 of the coupling 4 is pressed down over the head 13 of the adjusting screw 12, the collar 14 being fixed in the groove 60 after turning the head 13 and thus the adjusting screw 12.
  • the screw nut of the screwdriver shaft 3 is fixed in a freely accessible manner at the foremost region of the housing 17, so that any removal of screws, a replacement of the screw nut or also an individual screw connection with manual insertion of the screw into the nut 5 can take place.
  • a coupling corresponding to the coupling 4 according to FIG. 1 is integrated in the setting tool drive 2, so that the screwdriver shaft 3 is connected directly to the setting device drive 2.
  • a guide sleeve 15 is arranged on a corresponding clamping part 9, in which a guide rod 16 fastened to the setting tool 1 is guided. This measure also ensures that the setting tool 1 is prevented from rotating relative to the setting device drive 2.
  • an adjusting screw 12 is provided, which is adjustable at different heights to limit the screwing depth.
  • the setting tool 1 is essentially designed as a housing 17, in which the device for feeding a magazine strip 18 is accommodated.
  • a supply channel 19 is arranged in this housing, which leads continuously through the housing and thus serves for the passage of the magazine strip 18.
  • On the housing 17 is also an on drive wheel 10 mounted in the form of a gear which engages in the magazine strip 18 and is connected to the rotary drive of the setting device.
  • a feed lock 21 also engages in the feed channel 19, which can be released and reinserted after each setting operation.
  • the drive wheel 20 is connected via an angular gear with the interposition of a friction clutch to the screwdriver shaft 3, so that the rotary movement of the screwdriver shaft 3 can be used directly for further transport of the magazine strip 18.
  • the axis 22 of the drive wheel 20 is oriented perpendicular to the axis 23 of the screwdriver shaft 3, a crown wheel 24 seated on the screwdriver shaft 3 advantageously being provided for the transmission of rotation.
  • This crown wheel 24 is arranged in a sliding fit on the screwdriver shaft 3, and is frictionally supported on the screwdriver shaft 3 via resilient sections. This creates a very simple possibility of a friction clutch, so that the rotary movement of the screwdriver shaft 3 can be used to drive the drive wheel 20 and thus to advance the magazine strip 18.
  • this frictional engagement can be accomplished very simply in that the through bore of the crown wheel 24 has one or more axially parallel grooves 25, in which leaf springs 26 are embedded, the bulge of which is resiliently supported on the surface of the screwdriver shaft 3.
  • leaf springs 26 can be held captively on the crown wheel 24 by their upper section bent over the upper end of the crown wheel 24.
  • the crown gear 24 is secured against displacement in the axial direction, on the one hand downward by the engagement of the toothing in the toothing of the drive wheel 20 and on the other hand by the stop of a sleeve 50. It is thereby always a despite the forward and backward movement of the screwdriver shaft 3 secure engagement of the mutual toothing of the crown wheel 24 and the drive wheel 20 is ensured.
  • the drive wheel 20 is mounted on the inner wall of the housing 17 on a bolt 27 and engages with the region facing away from the crown wheel 24 into the feed channel 19 of the magazine strip 18. If the drive wheel 20 and thus also the crown wheel 24 are designed as gear wheels, a special embodiment of a magazine strip 18 is used which has continuous toothing 28 on at least one side edge region. A secure engagement between drive wheel 20 and magazine strip 18 is thereby ensured.
  • the drive wheel 10 would also be conceivable to design the drive wheel 10 as a friction wheel, it also being possible to transmit the force from the crown wheel 24 via a mutual contact surface. In such a case, the drive wheel 20 would have to bear against the magazine strip 18 with a corresponding contact pressure.
  • the drive wheel 20 it would of course also be possible for the drive wheel 20 to be mounted with an axis aligned parallel to the axis of rotation 23 of the screwdriver shaft 3, in which case a corresponding toothing would have to be provided towards the side region of the magazine strip 18.
  • the feed lock 21 essentially consists of a pivotably mounted lever 29 which is held in a locked position and a locking part 30 held thereon.
  • the locking part 30 engages in the feed channel 19 for the magazine strip 18 and serves as a stop for locking cams 31 projecting on the magazine strip.
  • the lever 29 has, at the end facing away from the pivot axis (bolt 32), an extension 33 which engages in the range of motion of the screwdriver shaft 3, so that the lever 29 together with the locking part 30 can be pivoted outwards during the advancing movement of the screwdriver shaft 3.
  • the feed lock is released and the magazine strip 18 can be moved on to a further position, this process being explained in detail later.
  • a spring body arranged in a longitudinal recess 34 on the lever 29 is provided as the locking part 30, this locking part 30 having at its free end an angled, freely projecting arm 35 which provides the feed stop for the magazine strip 18 forms.
  • the locking part 30 bears against one side wall 36 of the longitudinal recess 34, the other side wall 37 of this longitudinal recess 34 forming a movement limitation for the locking part 30 in the lateral pivoting direction.
  • the locking part 30 is thus held in the plane of the lever 29 as well as springs swingable transversely to its level. This is the only way to ensure proper function as a feed lock and to properly trigger the feed lock.
  • the locking part 30 can be fastened in a structurally simple manner to the bolt 32 forming the axis of rotation for the lever 29. It is also possible in this way to form the locking part 30 from a spring steel wire, since this is due to the stops on the side walls the 26 and 37 receives sufficient stability.
  • a leaf spring 30 can be used in a simple manner, which can be fastened to the outer wall of the housing 17 by screws 39.
  • This leaf spring 38 covers with its free end the lever 29 on the outside of the housing 17.
  • the magazine strip 18, which is provided with screws 7, is inserted into the setting tool 1 in the direction of arrow 40, specifically into the feed channel 19.
  • the drive wheel 28 engages in the toothing 28 of the magazine strip 18 and causes the magazine strip 18 to be transported further by the rotary drive of the screwdriver shaft 3 until the first locking cam 31 comes into contact with the arm 35 of the locking part 30.
  • This arm 35 and thus the locking part 30 are pivoted out by the contact pressure of the locking cam 31 of the magazine strip 18 until the free end of the locking part 30, that is to say the arm 35, comes into contact with the side boundary 37 of the longitudinal recess 34.
  • this end part 41 is freely rotatable in the screwdriver shaft 3 and only when pressed in the screwdriver shaft 3 is coupled directly to the setting tool drive, a gentle attachment to the screw head 6 is possible.
  • the screwdriver shaft 3 is depressed further, the screw 7 is pushed through the magazine strip 18, the screwdriver shaft 3 also being guided downward through the magazine strip 18 until the screwing process is complete.
  • the lever 29 see FIG. 6) is pivoted out, so that the locked position of the lever 29 or the locking part 30 is released.
  • the screwdriver shaft 3 holds the magazine strip 18 in place at this time, the feed lock is not required at this time.
  • a spring-loaded ball 53 or a corresponding bolt acts on the adjusting screw 12.
  • the adjusting screw 12 has one or more longitudinal grooves in the area of the thread, so that it can be fixed in different setting positions, since the ball 53 can snap into the corresponding grooves on the adjusting screw 12.
  • a spring body 55 is provided which engages through an opening 63 in the interior of the nut.
  • the housing 17 ends at its free end in two bow-shaped support parts 45, with which the setting tool 1 can be placed on the part to be screwed.
  • a profile piece 46 can be attached to a support part 45, e.g. by a releasable snap connection 56 in order to achieve centering in the case of special screw connections.
  • the profile piece 45 shown is used for screw connections on the crest of a trapezoidal sheet. This ensures a screw connection in the middle of the profile elevation. Depending on the area of application, different profile pieces can be used here.
  • a locking part 70 which is designed in one piece with the lever 29 and is designed as a latching lug, is provided.
  • the lateral displaceability for performing the required movements is taken over by the entire lever 29.
  • the lever 29 can be displaced in the direction of its pivot axis 32 against the frictional force of the pressing leaf spring 38, specifically in the area between the two housing boundaries 71 and 73.
  • Extension 33 is a side boundary 74 of this extension 33 aligned at an acute angle to the pivoting plane of the lever 29.
  • This acute-angled side limitation 74 cooperates with the fixed housing limitation 71, so that when the lever 29 is pivoted out in the direction of arrow 75, the lever 29 is forcibly moved in the direction of arrow 76 (FIG. 11), the frictional force between the pressing leaf spring 38 and the outer surface of the lever 29 must be overcome.
  • the locking part 70 provided here is designed as a latching lug, which has a latching stop 72, which comes into contact with the latching cams 31 of the magazine strip.
  • the locking part 70 On the side opposite the detent stop 72, the locking part 70 has a sloping boundary 77.
  • a screwing operation is also to be explained below for this embodiment according to FIGS. 7 to 11:
  • the magazine strip 18, which is covered with screws 7, is inserted into the setting tool 1 in the direction of arrow 40, specifically into the feed channel 19.
  • the drive wheel 20 engages in the toothing 28 of the magazine strip 18 and causes the magazine strip 18 to be transported further by the rotary drive of the screwdriver shaft 3 until the first locking cam 31 comes into contact with the locking part 70 designed as a snap-in lug.
  • This locking part 70 and thus also the entire lever 29 is displaced against the housing limitation 71 while overcoming the frictional force between the leaf spring 38 and the associated surface of the lever 29.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vending Machines For Individual Products (AREA)
  • Devices For Checking Fares Or Tickets At Control Points (AREA)
  • Indicating And Signalling Devices For Elevators (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Slide Fasteners (AREA)

Abstract

1. A device for feeding fasteners held in a magazine strip (18) to an application tool (1), it being possible to move the magazine strip (18) further before or after each application procedure, and a feed pawl being provided which engages in the feed channel (19) for the magazine strip (18) and which is releasable after each application prodedure and can be applied again, and a driving wheel (20) being provided which engages in the feed channel (19) for the magazine strip (18) and which can be operatively connected to the latter, characterized in that the driving wheel (20) can be connected to the rotary drive of the application tool either directly or indirectly by way of a friction clutch (24, 25, 26) arranged in a screwer shaft (3), and a feed pawl which is constructed as a pivotably mounted lever (29) held resiliently in the locking position and which as a stop for engagement dogs (31) projecting on the magazine strip engages in the feed channel (19) for the magazine strip (18) and is caused to swing out by the screwer shaft (3).

Description

Die Erfindung betrifft eine zum Zuführen von in einem Magazinierstreifen gehaltenen Befestigern zu einem Setzgerät, wobei vor bzw. nach jedem Setzvorgang der Magazinierstreifen weiter bewegbar ist, und eine in den Zuführkanal für den Magazinierstreifen eingreifende und nach jedem Setzvorgang lösbare und wieder einsetzbare Vorschubsperre vorgesehen ist, wobei ein in einen Zuführkanal für den Magazinerstreifen eingreifendes und mit diesem in Wirkverbindung bringbares Antriebsrad vorgesehen ist.The invention relates to a fastener held in a magazine strip for a setting device, the magazine strip being movable further before or after each setting process, and a feed lock which engages in the feed channel for the magazine strip and is releasable and reusable after each setting process is provided. wherein a drive wheel is provided which engages in a feed channel for the magazine strip and can be brought into operative connection therewith.

Zur Durchführung von rasch aufeinanderfolgenden Setzvorgängen, z.B. beim Eindrehen von Schrauben, werden diese in einem Magazinierstreifen gehalten und mittels diesem Magazinierstreifen in die jeweilige Ausgangsposition im Setzgerät geführt. Für den Transport eines Magazinierstreifens in dem Setzgerät sind bereits viele Ausführungsvarianten bekanntgeworden. Bei allen diesen Ausführungsvarianten werden in irgendeiner Form schwenkbar gelagerte Hebel vorgesehen, welche in eine Perforierung des Magazinierstreifens eingreifen, wobei die Bewegung dieser Hebel vom Vorschub beim Setzvorgang des Setzgerätes abgeleitet wird. Es ist daher ein relativ großer mechanischer Aufwand erforderlich, wobei außerdem eine hohe Genauigkeit vonnöten ist, um einen exakten Vorschub zu bewirken.To carry out quick successive setting processes, e.g. when screws are screwed in, they are held in a magazine strip and guided into the respective starting position in the setting tool by means of this magazine strip. Many design variants have already become known for the transport of a magazine strip in the setting device. In all of these variants, levers are pivotally mounted in some form, which engage in a perforation of the magazine strip, the movement of these levers being derived from the feed during the setting process of the setting tool. A relatively large mechanical effort is therefore required, and a high degree of accuracy is also required in order to achieve an exact feed.

Es sind auch einige Ausführungen einer Vorschubsperre bekanntgeworden, die dafür sorgen sollen, daß der Magazinierstreifen in der jeweiligen Setzposition fixiert werden kann, doch sind diese bekannten Ausführungen von recht kompliziertem Aufbau und teilweise sogar als Einheit mit der Vorschubeinrichtung ausgeführt, so daß dadurch ein langsamerer Vorschub gegeben ist.Some versions of a feed lock have also become known, which are intended to ensure that the magazine strip can be fixed in the respective setting position, but these known designs are of quite complicated construction and in some cases even are designed as a unit with the feed device, so that this results in a slower feed given is.

Es ist auch eine Vorschubeinrichtung für einen Magazinierstreifen bekannt (US-A 4 139 036), bei der ein von Hand drehbares Antriebsrad in eine an einem Seitenlängsbereich des Magazinierstreifens vorhandende Perforierung eingreift. An der gegenüberliegenden Seitenlängsbegrenzung des Magazinierstreifens ist ebenfalls eine Perforierung vorgesehen, wobei in diese eine an der Vorschubeinrichtung gehaltene Feder als Vorschubsperre einrasten kann. Nach jedem Setzvorgang muß der Magazinierstreifen von Hand weitergedreht werden, wobei dieser Vorschub langsam erfolgen muß, damit die Vorschubsperre die nächstfolgende Öffnung der seitlichen Perforation nicht einfach federnd überspringt.A feed device for a magazine strip is also known (US Pat. No. 4,139,036), in which a drive wheel which can be rotated by hand engages in a perforation provided on a longitudinal side region of the magazine strip. Perforation is also provided on the opposite side longitudinal boundary of the magazine strip, and a spring held on the feed device can snap into it as a feed lock. After each setting process, the magazine strip must be turned further by hand, this feed must be slow so that the feed lock does not simply spring over the next opening of the lateral perforation.

Die vorliegende Erfindung hat sich daher zur Aufgabe gestellt, eine einfache und exakte Vorschubmöglichkeit und eine einfache Vorschubsperre für den Magazinierstreifen zu schaffen, um diesen und somit die in diesem angeordneten Befestiger rasch und zuverlässig in die jeweils folgende Setzposition zu bringen.The present invention has therefore set itself the task of creating a simple and exact feed possibility and a simple feed lock for the magazine strip in order to bring this and thus the fasteners arranged therein quickly and reliably into the following setting position.

Erfindungsgemäß gelingt dies dadurch, daß das Antriebsrad direkt oder indirekt über eine in einer Schrauberwelle angeordnete Reibungskupplung mit dem Drehantrieb des Setzgerätes verbindbar ist, und eine als schwenkbar gelagerter, federnd in Sperrstellung gehaltener Hebel ausgebildete Vorschubsperre, welche als Anschlag für am Magazinierstreifen vorspringende Rastnocken in den Zuführkanal für den Magazinierstreifen eingreift und dessen Ausschwenken die Schrauberwelle bewirkt.According to the invention, this is achieved in that the drive wheel can be connected directly or indirectly via a friction clutch arranged in a screwdriver shaft to the rotary drive of the setting tool, and a feed lock designed as a pivotably mounted lever which is held in the locked locking position and acts as a stop for locking cams projecting on the magazine strip Feed channel for the magazine strip engages and its pivoting causes the screwdriver shaft.

Durch diese Maßnahmen ist es in einfacher Weise erstmals ermöglicht worden, den Vorschubantrieb für den Magazinierstreifen vom Drehantrieb der Setzvorrichtung abzuleiten, so daß komplizierte Gestänge und schwenkbare Transporthebel vermieden werden können. Außerdem ist durch die Anordnung der besonderen Art einer Vorschubsperre gewährleistet, daß der Transport des Magazinierstreifens exakt um die erforderliche Länge weitergeschoben wird, so daß der Befestiger immer genau mit der Schrauberwelle ausgerichtet ist.These measures made it possible for the first time in a simple manner to derive the feed drive for the magazine strip from the rotary drive of the setting device, so that complicated linkages and pivotable transport levers can be avoided. In addition, the arrangement of the special type of feed lock ensures that the transport of the magazine strip is pushed exactly by the required length, so that the fastener is always exactly aligned with the screwdriver shaft.

Durch die erfindungsgemäßen Maßnahmen ist es auch ermöglicht worden, den Vorschub des Magazinierstreifens in sehr einfacher Weise vom Drehantrieb anzuleiten, da eine Reibungskupplung dazwischengeschaltet ist, so daß unabhängig von der weiteren Drehbewegung der Schraubenwelle das Antriebsrad und somit der Magazinierstreifen stehen bleiben können, so bald der Magazinierstreifen von der Vorschubsperre gehalten wird. Eine solche erfindungsgemäße Anordnung ist auch praktisch wartungsfrei und außerdem ... auch rauhem Baustellenbetrieb gewachsen, da keine vorstehenden, filigranen Transporthebel erforderlich sind.The measures according to the invention have also made it possible to guide the feed of the magazine strip in a very simple manner from the rotary drive, since a friction clutch is interposed, so that the drive wheel and thus the magazine strip can stop as soon as possible regardless of the further rotary movement of the screw shaft Magazine strip is held by the feed lock. Such an arrangement according to the invention is also practically maintenance-free and also ... grown even rough construction site operation, since no protruding, filigree transport levers are required.

Weitere Vorteile werden in der nachstehenden Beschreibung anhang der Zeichnungen noch näher erläutert. Es zeigen:

  • Fig. 1 und 2 zwei verschiedene Ausführungsformen eines Setzgerätes mit der angebauten erfindungsgemäßen Einrichtung;
  • Fig. 3 einen Schnitt nach der Linie 1 -1 in Fig. 1;
  • Fig. 4 einen Schnitt nach der Linie II - II in Fig. 3;
  • Fig. 5 eine Schrägsicht eines Teils eines Magazinierstreifens zusammen mit der Vorschubsperre, wobei der Übersichtlichkeit halber alle anderen Teile weggelassen wurden;
  • Fig. 6 eine gleiche Darstellung wie Fig. 3, wobei jedoch die Schrauberwelle die dargestellte Schraube bereits ausgestoßen hat und den Einschraubvorgang durchführt;
  • Fig. 7 und 8 Schnitte ähnlich den Fig. 3 und 6 mit einer anderen Ausführungsform einer Vorschubsperre;
  • Fig. 9 eine Schrägsicht des nach den Fig. 7 und 8 vorgesehenen, als Vorschubsperre wirkenden Hebels;
  • Fig. 10 einen Schnitt nach der Linie 111 - 111 in Fig. 7;
  • Fig. 11 einen Schnitt nach der Linie IV - IV in Fig. 8.
Further advantages are explained in more detail in the following description attached to the drawings. Show it:
  • Figures 1 and 2 two different embodiments of a setting tool with the attached device according to the invention.
  • 3 shows a section along the line 1 -1 in Fig. 1.
  • 4 shows a section along the line II - II in Fig. 3.
  • 5 shows an oblique view of part of a magazine strip together with the feed lock, all other parts being omitted for the sake of clarity;
  • FIG. 6 shows the same representation as FIG. 3, but with the screwdriver shaft already ejecting the screw shown and carrying out the screwing-in process;
  • Fig. 7 and 8 sections similar to Figures 3 and 6 with another embodiment of a feed lock.
  • 9 shows an oblique view of the lever provided according to FIGS. 7 and 8 and acting as a feed lock;
  • 10 shows a section along the line 111-111 in FIG. 7;
  • 11 shows a section along the line IV-IV in FIG. 8.

Die Einrichtung wird anhand eines Setzgerätes beschrieben, welches zum Eindrehen von Schrauben, vorzugsweise selbstbohrenden und gewindeschneidenden Schrauben dient. Eine solche Einrichtung ist in gleicher Weise zum Setzen von anders ausgebildeten Schrauben, von Selbstbohrnieten, Bolzen od. dgl. geeignet.The device is described with the aid of a setting tool which is used to screw in screws, preferably self-drilling and thread-cutting screws. Such a device is equally suitable for setting differently designed screws, self-drilling rivets, bolts or the like.

Die Einrichtung besteht im wesentlichen aus dem Setzgerät 1 und dem Setzgerätantrieb 2, wobei das Setzgerät 1 gegenüber dem Setzgerätantrieb 2 gegen Verdrehen gesichert ist. Eine Schrauberwelle 3, welche im Setzgerät 1 gelagert ist, ist mit dem Setzgerätantrieb 2 gekuppelt. Bei der Ausführung nach Fig. 1 ist direkt an die Schrauberwelle 3 anschließend eine Einrastkupplung 4 vorgesehen, so daß die Schraubnuß 5 ohne besondere Drehkrafteinwirkung den Kopf 6 einer Schraube 7 erfassen kann, wobei erst bei weiterem Niederdrücken der Schrauberwelle 3 die Kupplung 4 einrastet und somit der Drehantrieb des Setzgerätantriebes 2 sich voll auf die Schraube 7 auswirkt. Bei einer solchen Anordnung kann als Setzgerätantrieb 2 eine normale Bohrmaschine verwendet werden. Bei Verwendung eines Schrauberantriebes ist in der Regel eine Einrastkupplung in dem Setzgerätantrieb 2 integriert, wobei nur bei eingerasteter Einrastkupplung in dem Setzgerätantrieb 2 die Schrauberwelle 3 eine Drehbewegung ausführt. Bei der Ausführung nach Fig. 1 wirkt die Schraubenfeder 59 auf die eventuell in dem Setzgerätantrieb 2 angeordnete Einrastkupplung, wobei die Kraft der Feder 49 größer ist als die in der im Setzgerätantrieb 2 integrierten Einrastkupplung vorgesehene Feder, so daß also die im Setzgerätantrieb 2 integrierte Einrastkupplung praktisch ständig geschlossen ist. Die Schrauberwelle 3 führt dadurch eine ständige Drehbewegung durch, sobald der Setzgerätantrieb 2 in Betrieb gesetzt wird. Es wird dadurch ein Drehantrieb aufrechterhalten, wie er für den Transport des Magazinierstreifens 18 durch ein Antriebsrad 20 erforderlich ist, was später noch näher erläutert wird.The device essentially consists of the setting tool 1 and the setting tool drive 2, the setting device 1 being secured against rotation relative to the setting device drive 2. A screwdriver shaft 3, which is mounted in the setting tool 1, is coupled to the setting tool drive 2. In the embodiment according to FIG. 1, a snap-in coupling 4 is then provided directly on the screwdriver shaft 3, so that the screw nut 5 can grip the head 6 of a screw 7 without any particular torque, the clutch 4 only engaging and thus engaging when the screwdriver shaft 3 is depressed further the rotary drive of the setting tool drive 2 has a full effect on the screw 7. In such an arrangement, a normal drilling machine can be used as setting tool drive 2. When using a screwdriver drive, a snap-in coupling is generally integrated in the setting tool drive 2, the screwing shaft 3 executing a rotary movement only when the snap-in coupling is engaged in the setting tool drive 2. In the embodiment according to FIG. 1, the helical spring 59 acts on the snap-in coupling which may be arranged in the setting tool drive 2, the force of the spring 49 being greater than the spring provided in the snap-in coupling integrated in the setting tool drive 2, so that the snap-in coupling integrated in the setting tool drive 2 is practically always closed. As a result, the screwdriver shaft 3 carries out a constant rotary movement as soon as the setting tool drive 2 is started up. As a result, a rotary drive is maintained as is required for the transport of the magazine strip 18 by a drive wheel 20, which will be explained in more detail later.

An einem zylindrischen Ansatzteil 8 des Setzgerätantriebes 2 ist ein Klemmteil 9 befestigt, welcher außerdem eine Führungsstange 10 trägt, deren freies Ende in eine Einbuchtung an einem Ansatz 11 des Setzgerätes 1 eingreift. Während des ganzen Schraubvorganges ist also der Ansatz 11 entlang der Führungsstange 10 verschiebbar und somit ist das Setzgerät 1 gegenüber dem Setzgerätantrieb 2 gegen Verdrehen gesichert.A clamping part 9 is fastened to a cylindrical extension 8 of the setting tool drive 2, which also carries a guide rod 10, the free end of which engages in an indentation in a projection 11 of the setting device 1. During the entire screwing operation, the shoulder 11 can thus be displaced along the guide rod 10, and thus the setting tool 1 is secured against rotation relative to the setting tool drive 2.

Am Setzgerät 1 ist ferner eine Einstellschraube 12 vorgesehen, mit der die Einschraubtiefe festgelegt werden kann. Der untere Abschlußbund 14 der Kupplung 4 kommt je nach der Einstellhöhe der Einstellschraube 12 am oberen Kopf 13 dieser Einstellschraube 12 zum Anschlag, so daß der Schraubvorgang dadurch beendet wird, da die Kupplung 4 kurz nach dem Anliegen an dem Kopf 13 auskuppelt und somit die Schraubnuß 5 nicht mehr mit dem Setzgerätantrieb 2 verbunden ist. Hinter dem Kopf 13 der Einstellschraube 12 ist eine Nut 60 vorgesehen, wobei im Kopf 13 selbst eine bogenförmige Ausnehmung vorhanden ist. Es besteht dadurch die Möglichkeit, daß der Abschlußbund 14 der Kupplung 4 über den Kopf 13 der Einstellschraube 12 nach unten gedrückt wird, wobei nach einem Verdrehen des Kopfes 13 und somit der Einstellschraube 12 der Bund 14 in der Nut 60 fixiert wird. Durch eine solche Maßnahme ist die Schraubnuß der Schrauberwelle 3 am vordersten Bereich des Gehäuses 17 frei zugänglich fixiert, so daß eventuell ein Entfernen von Schrauben, ein Auswechseln der Schraubnuß oder auch eine Einzelverschraubung mit Handeinführung der Schraube in die Nuß 5 erfolgen kann.An adjustment screw 12 is also provided on the setting tool 1, with which the screwing depth can be determined. The lower end collar 14 of the coupling 4 comes to a stop depending on the setting height of the adjusting screw 12 on the upper head 13 of this adjusting screw 12, so that the screwing process is ended because the coupling 4 disengages shortly after contacting the head 13 and thus the screw nut 5 is no longer connected to the setting tool drive 2. A groove 60 is provided behind the head 13 of the adjusting screw 12, an arcuate recess being present in the head 13 itself. There is thereby the possibility that the end collar 14 of the coupling 4 is pressed down over the head 13 of the adjusting screw 12, the collar 14 being fixed in the groove 60 after turning the head 13 and thus the adjusting screw 12. By such a measure, the screw nut of the screwdriver shaft 3 is fixed in a freely accessible manner at the foremost region of the housing 17, so that any removal of screws, a replacement of the screw nut or also an individual screw connection with manual insertion of the screw into the nut 5 can take place.

Bei der Ausgestaltung nach Fig. 2 ist eine Kupplung entsprechend der Kupplung 4 nach Fig. 1 in den Setzgerätantrieb 2 integriert, so daß die Schrauberwelle 3 direkt mit dem Setzgerätantrieb 2 verbunden ist. Bei einer solchen Anordnung ist an einem entsprechenden Klemmteil 9 eine Führungshülse 15 angeordnet, in welcher eine am Setzgerät 1 befestigte Führungsstange 16 geführt ist. Es ist auch mit dieser Maßnahme eine Verdrehsicherung des Setzgerätes 1 gegenüber dem Setzgerätantrieb 2 gewährleistet. Auch bei dieser Anordnung ist eine Einstellschraube 12 vorgesehen, die zur Begrenzung der Schraubtiefe in verschiedenen Höhenlagen einstellbar ist. Bei der Ausführung nach Fig. 2 ist eine dem Kopf 13 und der Nut 60 in Funktion ähnliche Anordnung getroffen, wobei hier jedoch an dem Klemmteil 9 ein schwenkbarer Bügel 57 vorgesehen wird, der in zusammengedrückter Stellung des Setzgerätes unterhalb der Begrenzung 58 des Ansatzes 11 eingehängt werden kann. Es ist dadurch ebenfalls eine Fixierung der Schrauberwelle 3 in der vordersten Stellung innerhalb des Gehäuses 17 und somit eine freie Zugänglichkeit gegeben.In the embodiment according to FIG. 2, a coupling corresponding to the coupling 4 according to FIG. 1 is integrated in the setting tool drive 2, so that the screwdriver shaft 3 is connected directly to the setting device drive 2. In such an arrangement, a guide sleeve 15 is arranged on a corresponding clamping part 9, in which a guide rod 16 fastened to the setting tool 1 is guided. This measure also ensures that the setting tool 1 is prevented from rotating relative to the setting device drive 2. In this arrangement, too, an adjusting screw 12 is provided, which is adjustable at different heights to limit the screwing depth. In the embodiment according to FIG. 2, an arrangement similar to the head 13 and the groove 60 is made, but here a pivotable bracket 57 is provided on the clamping part 9, which is suspended below the boundary 58 of the extension 11 in the compressed position of the setting tool can be. This also fixes the screwdriver shaft 3 in the foremost position within the housing 17 and thus provides free accessibility.

Um die Möglichkeit zur Aufrechterhaltung eines Drehantriebes der Schrauberwelle 3 bei der Ausführung nach Fig. 2 zu erläutern, ist ein Vorgriff auf die Erläuterung zu Fig. 4 notwendig. Es ist dort die Anordnung eines durch eine Feder 52 belasteten Sperrbolzens 51 vorgesehen, der wohl das Verschieben der Schrauberwelle 3 in Pfeilrichtung 61 zuläßt, jedoch ein Herausziehen der Schrauberwelle 3 entgegen der Pfeilrichtung 61 verhindert. Zur Aufrechterhaltung eines Drehantriebes der Schrauberwelle 3 bei der Ausgestaltung nach Fig. 2 ist es erforderlich, daß sofort beim Niederdrücken des Setzgerätantriebes 2 eine Drehbewegung der Schrauberwelle 3 hervorgerufen wird, um das Antriebsrad 20 antreiben zu können und somit den Vorschub des Magazinierstreifens 18 zu bewirken. Wenn bei einer solchen Ausführung anstelle der in Fig. 4 vorgesehenen umlaufenden Nut 62 eine Nut ähnlich einer Gewindeform ansteigend verlaufend vorgesehen wird, wobei ein Übergleiten des vollen Querschnittes der Schrauberwelle 3 über den Sperrbolzen 51 nur am Ende dieses nutenförmigen Gewindeganges möglich ist, dann wird beim Niederdrücken des Setzgerätantriebes 2 die in diesem Setzgerätantrieb 2 integrierte Einrastkupplung zumindest über eine oder mehrere Umdrehungen geschlossen, da ein entsprechender Widerstand beim Niederdrücken vorhanden ist. Dadurch wird auf jeden Fall vom dem Auftreffen der Nuß 5 auf dem Kopf 6 der Schraube 7 eine Drehbewegung der Schrauberwelle 3 und somit des Antriebsrades 20 hervorgerufen, so daß rechtzeitig ein Vorschub des Magazinierstreifens 18 erfolgen kann.In order to explain the possibility of maintaining a rotary drive of the screwdriver shaft 3 in the embodiment according to FIG. 2, an anticipation of the explanation of FIG. 4 is necessary. There is provided the arrangement of a locking bolt 51 loaded by a spring 52, which probably allows the screwdriver shaft 3 to be displaced in the direction of the arrow 61, but prevents the screwdriver shaft 3 from being pulled out against the direction of the arrow 61. In order to maintain a rotary drive of the screwdriver shaft 3 in the embodiment according to FIG. 2, it is necessary that a rotary movement of the screwdriver shaft 3 is caused immediately when the setting tool drive 2 is depressed in order to be able to drive the drive wheel 20 and thus to cause the magazine strip 18 to be advanced. If, in such an embodiment, instead of the circumferential groove 62 provided in FIG. 4, a groove similar to a thread shape is provided with an increasing gradient, with the entire cross section of the screwdriver shaft 3 sliding over the locking bolt 51 only at the end of this groove-shaped thread, then at Depressing the setting device drive 2, the snap-in clutch integrated in this setting device drive 2 is closed at least over one or more revolutions, since there is a corresponding resistance when pressing down. As a result, the impact of the nut 5 on the head 6 of the screw 7 causes a rotation of the screwdriver shaft 3 and thus of the drive wheel 20, so that the magazine strip 18 can be advanced in time.

Das Setzgerät 1 ist im wesentlichen als Gehäuse 17 ausgeführt, in welchem die Einrichtung zum Zuführen eines Magazinierstreifens 18 untergebracht ist. In diesem Gehäuse ist ein Zuführkanal 19 angeordnet, welcher durchgehend durch das Gehäuse führt und somit zum Durchtritt des Magazinierstreifens 18 dient. Am Gehäuse 17 ist ferner ein Antriebsrad 10 in Form eines Zahnrades gelagert, welches in den Magazinierstreifen 18 eingreift und mit dem Drehantrieb der Setzvorrichtung verbunden ist. In den Zuführkanal 19 greift ferner eine Vorschubsperre 21 ein, welche nach jedem Setzvorgang lösbar und wieder einsetzbar ist.The setting tool 1 is essentially designed as a housing 17, in which the device for feeding a magazine strip 18 is accommodated. A supply channel 19 is arranged in this housing, which leads continuously through the housing and thus serves for the passage of the magazine strip 18. On the housing 17 is also an on drive wheel 10 mounted in the form of a gear which engages in the magazine strip 18 and is connected to the rotary drive of the setting device. A feed lock 21 also engages in the feed channel 19, which can be released and reinserted after each setting operation.

Das Antriebsrad 20 ist über ein Winkelgetriebe unter Zwischenschaltung einer Reibungskupplung mit der Schrauberwelle 3 verbunden, so daß die Drehbewegung der Schrauberwelle 3 direkt zum Weitertransport des Magazinierstreifens 18 ausgenützt werden kann. Die Achse 22 des Antriebsrades 20 ist senkrecht zur Achse 23 der Schrauberwelle 3 ausgerichtet, wobei zur Drehübertragung vorteilhaft ein auf der Schrauberwelle 3 sitzendes Kronenrad 24 vorgesehen ist. Dieses Kronenrad 24 ist in einem Gleitsitz auf der Schrauberwelle 3 angeordnet, und über federnde Abschnitte reibungsschlüssig an der Schrauberwelle 3 abgestützt. Es ist dadurch eine sehr einfache Möglichkeit einer Reibungskupplung geschaffen, so daß die Drehbewegung der Schrauberwelle 3 zum Antrieb des Antriebsrades 20 und somit zum Vorschub des Magazinierstreifens 18 herangezogen werden kann. Sobald aber der Magazinierstreifen 18 in der vorgesehenen Position angelangt ist und somit die Vorschubsperre 21 zum Einsatz kommt, kann sich die Schrauberwelle 3 gegenüber dem nunmehr festsitzenden Kronenrad 24 weiter verdrehen. Die Kraft dieser Reibungskupplung muß nicht besonders groß sein, da zum Weitertransport des Magazinierstreifens 18 keine großen Kräfte erforderlich sind. Es ist deshalb auch die notwendige Reibung zwischen dem Kronenrad 24 und der Schrauberwelle 3 nicht besonders groß, so daß sich infolge der reibungssschlüssigen Anlage der federnden Abschnitte keinerlei Abnützungserscheinungen an der Schrauberwelle 3 bilden können.The drive wheel 20 is connected via an angular gear with the interposition of a friction clutch to the screwdriver shaft 3, so that the rotary movement of the screwdriver shaft 3 can be used directly for further transport of the magazine strip 18. The axis 22 of the drive wheel 20 is oriented perpendicular to the axis 23 of the screwdriver shaft 3, a crown wheel 24 seated on the screwdriver shaft 3 advantageously being provided for the transmission of rotation. This crown wheel 24 is arranged in a sliding fit on the screwdriver shaft 3, and is frictionally supported on the screwdriver shaft 3 via resilient sections. This creates a very simple possibility of a friction clutch, so that the rotary movement of the screwdriver shaft 3 can be used to drive the drive wheel 20 and thus to advance the magazine strip 18. However, as soon as the magazine strip 18 has reached the intended position and thus the feed lock 21 is used, the screwdriver shaft 3 can continue to rotate relative to the crown wheel 24, which is now stuck. The force of this friction clutch does not have to be particularly large, since no great forces are required to transport the magazine strip 18 further. Therefore, the necessary friction between the crown gear 24 and the screwdriver shaft 3 is not particularly large, so that no signs of wear and tear can form on the screwdriver shaft 3 as a result of the frictional engagement of the resilient sections.

In konstruktiver Weise läßt sich dieser Reibungsschluß sehr einfach dadurch bewerkstelligen, daß die Durchgangbohrung des Kronenrades 24 eine oder mehrere achsparallele Nuten 25 aufweist, in welche Blattfedern 26 eingelassen sind, deren Auswölbung federnd an der Oberfläche der Schrauberwelle 3 abgestützt sind. Diese Blattfedern 26 können unverlierbar am Kronenrad 24 gehalten werden, indem ihr oberer Abschnitt umgebogen über den oberen Abschluß des Kronenrades 24 greift. Das Kronenrad 24 ist gegen Verschieben in Achsrichtung gesichert, und zwar einerseits nach unten hin durch das Eingreifen der Verzahnung in die Verzahnung des Antriebsrades 20 und andererseits durch den Anschlag einer Hülse 50. Es ist dadurch trotz der Vor- und Zurückbewegung der Schrauberwelle 3 stets ein sicherer Eingriff der gegenseitigen Verzahnung des Kronenrades 24 und des Antriebsrades 20 gewährleistet.In a constructive manner, this frictional engagement can be accomplished very simply in that the through bore of the crown wheel 24 has one or more axially parallel grooves 25, in which leaf springs 26 are embedded, the bulge of which is resiliently supported on the surface of the screwdriver shaft 3. These leaf springs 26 can be held captively on the crown wheel 24 by their upper section bent over the upper end of the crown wheel 24. The crown gear 24 is secured against displacement in the axial direction, on the one hand downward by the engagement of the toothing in the toothing of the drive wheel 20 and on the other hand by the stop of a sleeve 50. It is thereby always a despite the forward and backward movement of the screwdriver shaft 3 secure engagement of the mutual toothing of the crown wheel 24 and the drive wheel 20 is ensured.

Das Antriebsrad 20 ist an der Innenwandung des Gehäuses 17 an einem Bolzen 27 gelagert und greift mit dem dem Kronenrad 24 abgewandten Bereich in den Zuführkanal 19 des Magazinierstreifens 18 ein. Wenn das Antriebsrad 20 und somit auch das Kronenrad 24 als Zahnräder ausgebildet sind, wird eine besondere Ausführungsform eines Magazinierstreifens 18 eingesetzt, der an wenigstens einem Seitenrandbereich eine durchgehende Verzahnung 28 aufweist. Es ist dadurch ein sicherer Eingriff zwischen Antriebsrad 20 und Magazinierstreifen 18 gewährleistet.The drive wheel 20 is mounted on the inner wall of the housing 17 on a bolt 27 and engages with the region facing away from the crown wheel 24 into the feed channel 19 of the magazine strip 18. If the drive wheel 20 and thus also the crown wheel 24 are designed as gear wheels, a special embodiment of a magazine strip 18 is used which has continuous toothing 28 on at least one side edge region. A secure engagement between drive wheel 20 and magazine strip 18 is thereby ensured.

In diesem Zusammenhang wäre es auch denkbar, das Antriebsrad 10 als Reibrad auszubilden, wobei auch die Kraftübertragung vom Kronenrad 24 her über eine gegenseitige Berührungsfläche möglich wäre. In einem solchen Falle müßte das Antriebsrad 20 mit einem entsprechenden Anpreßdruck gegen den Magazinierstreifen 18 anliegen. Im Rahmen der Erfindung wäre es selbstverständlich auch möglich, daß das Antriebsrad 20 mit parallel zur Drehachse 23 der Schrauberwelle 3 ausgerichteter Achse montiert wäre, wobei dann eine entsprechende Verzahnung zum Seitenbereich des Magaziniersteifens 18 hin vorzusehen wäre. Bei einer solchen Ausgestaltung wäre es auch denkbar, ein Reibrad einzusetzen, wobei die Übertragung der Drehbewegung wiederum über ein an der Schrauberwelle 3 anliegendes Reibrad möglich wäre, so daß wieder die notwendige Reigungskupplung geschaffen wäre. Eine solche Ausgestaltung bedingt aber eine wesentlich größere konstruktive Ausbildung des Setzgerätes 1 und würde sich daher gerade bei schwer zugänglichen Stellen negativ auswirken.In this context, it would also be conceivable to design the drive wheel 10 as a friction wheel, it also being possible to transmit the force from the crown wheel 24 via a mutual contact surface. In such a case, the drive wheel 20 would have to bear against the magazine strip 18 with a corresponding contact pressure. Within the scope of the invention, it would of course also be possible for the drive wheel 20 to be mounted with an axis aligned parallel to the axis of rotation 23 of the screwdriver shaft 3, in which case a corresponding toothing would have to be provided towards the side region of the magazine strip 18. In such an embodiment, it would also be conceivable to use a friction wheel, the transmission of the rotary movement again being possible via a friction wheel abutting the screwdriver shaft 3, so that the necessary cleaning clutch would be created again. Such a configuration, however, requires a significantly larger structural design of the setting tool 1 and would therefore have a negative effect especially in places that are difficult to access.

Die Vorschubsperre 21 besteht im wesentlichen aus einem schwenkbar gelagerten und federn in einer Sperrstellung gehaltenen Hebel 29 sowie einem an diesem gehaltenen Sperrteil 30. Der Sperrteil 30 greift in den Zuführkanal 19 für den Magazinierstreifen 18 ein und dient als Anschlag für am Magazinierstreifen vorspringende Rastnocken 31.The feed lock 21 essentially consists of a pivotably mounted lever 29 which is held in a locked position and a locking part 30 held thereon. The locking part 30 engages in the feed channel 19 for the magazine strip 18 and serves as a stop for locking cams 31 projecting on the magazine strip.

Der Hebel 29 weist an dem der Schwenkachse (Bolzen 32) abgewandten Ende einen in den Bewegungsbereich der Schrauberwelle 3 eingreifenden Fortsatz 33 auf, so daß der Hebel 29 zusammen mit dem Sperrteil 30 bei der Vorschubbewegung der Schrauberwelle 3 nach außen verschwenkt werden kann. Dadurch ist die Vorschubsperre gelöst und der Magazinierstreifen 18 kann um eine weitere Position weitergeführt werden, wobei dieser Ablauf später noch eingehend erläutert wird.The lever 29 has, at the end facing away from the pivot axis (bolt 32), an extension 33 which engages in the range of motion of the screwdriver shaft 3, so that the lever 29 together with the locking part 30 can be pivoted outwards during the advancing movement of the screwdriver shaft 3. As a result, the feed lock is released and the magazine strip 18 can be moved on to a further position, this process being explained in detail later.

Bei der Ausführung nach den Fig. 1 bis 6 ist als Sperrteil 30 ein in einer Längsausnehmung 34 am Hebel 29 angeordneter Federkörper vorgesehen, wobei dieser Sperrteil 30 an seinem freien Ende einen abgewinkelten, frei auskragenden Arm 35 aufweist, welcher den Vorschubanschlag für den Magazinierstreifen 18 bildet. Der Sperrteil 30 liegt in seiner Ruhestellung an der einen Seitenwandung 36 der Längsausnehmung 34 an, wobei die andere Seitenwand 37 dieser Längsausnehmung 34 eine Bewegungsbegrenzung für den Sperrteil 30 in seitlicher Ausschwenkrichtung bildet. Der Sperrteil 30 ist also sowohl in der Ebene des Hebels 29 als auch quer zu dessen Ebene federn ausschwenkbar gehalten. Erst dadurch ergibt sich eine einwandfreie Funktion als Vorschubsperre und zum einwandfreien Auslösen der Vorschubsperre. Der Sperrteil 30 kann in konstruktiv einfacher Weise an dem die Drehachse für den Hebel 29 bildenden Bolzen 32 befestigt werden. Es ist auf diese Weise auch möglich, den Sperrteil 30 aus einem Federstahldraht zu bilden, da dieser durch die Anschläge an den Seitenwänden 26 und 37 eine ausreichende Stabilität erhält.In the embodiment according to FIGS. 1 to 6, a spring body arranged in a longitudinal recess 34 on the lever 29 is provided as the locking part 30, this locking part 30 having at its free end an angled, freely projecting arm 35 which provides the feed stop for the magazine strip 18 forms. In its rest position, the locking part 30 bears against one side wall 36 of the longitudinal recess 34, the other side wall 37 of this longitudinal recess 34 forming a movement limitation for the locking part 30 in the lateral pivoting direction. The locking part 30 is thus held in the plane of the lever 29 as well as springs swingable transversely to its level. This is the only way to ensure proper function as a feed lock and to properly trigger the feed lock. The locking part 30 can be fastened in a structurally simple manner to the bolt 32 forming the axis of rotation for the lever 29. It is also possible in this way to form the locking part 30 from a spring steel wire, since this is due to the stops on the side walls the 26 and 37 receives sufficient stability.

Zur Federbelastung des Hebels 29 kann in einfacher Weise eine Blattfeder 30 eingesetzt werden, welche an der Außenwandung des Gehäuses 17 durch Schrauben 39 befestigt werden kann. Diese Blattfeder 38 deckt mit ihrem freien Ende den Hebel 29 an der Außenseite des Gehäuses 17 ab.For spring loading of the lever 29, a leaf spring 30 can be used in a simple manner, which can be fastened to the outer wall of the housing 17 by screws 39. This leaf spring 38 covers with its free end the lever 29 on the outside of the housing 17.

Nachstehend soll ein Verschraubvorgang bei einer Ausführung nach den Fig. 1 bis 6 näher erläutert werden: Der mit Schrauben 7 besetzte Magazinierstreifen 18 wird in Pfeilrichtung 40 in das Setzgerät 1, und zwar in den Zuführkanal 19 eingeführt. Das Antriebsrad 28 greift in die Verzahnung 28 des Magazinierstreifens 18 ein und bewirkt durch den Drehantreib der Schrauberwelle 3 einen Weitertransport des Magazinierstreifens 18, bis die erste Rastnocke 31 an dem Arm 35 des Sperrteils 30 zur Anlage kommt. Dieser Arm 35 und somit der Sperrteil 30 werden durch die Anpreßkaft des Rastnockens 31 des Magazinierstreifens 18 ausgeschwenkt , bis das freie Ende des Sperrteils 30, also der Arm 35 an der Seitenbegrenzung 37 der Längsausnehmung 34 zur Anlage kommt. Dieser Arm 35 und somit der Sperrteil 30 werden durch die Anpreßkraft des Rastnockens 31 des Magazinierstreifens 18 ausgeschwenkt, bis das freie Ende des Sperrteils 30, also der Arm 35 an der Seitenbegrenzung 37 der Längsausnehmung 34 zur Anlage kommt. Nun ist ein Weiterbewegen des Magazinierstreifens 18 gesperrt, so daß sich auch das Antriebsrad 20 nicht mehr weiter drehen kann. Es bleibt somit auch das Kronenrad 24 stehen, wobei sich infolge der hier vorgsehenen Reibungskupplung die Schrauberwelle 3 weiterbewegen kann. Es erfolgt nun der Vorschub durch Niederdrücken der Schrauberwelle 3. Der die Schraubnuß aufnehmende freie Endteil 41 der Schrauberwelle 3 bewegt sich in Richtung zum Schraubenkopf 6 einer Schraube 7. Dadurch, daß dieser Endteil 41 in der Schrauberwelle 3 frei drehbar ist und erst beim Eindrücken in die Schrauberwelle 3 direkt mit dem Setzgerätantrieb gekuppelt wird, ist ein schonendes Ansetzen am Schraubenkopf 6 möglich. Beim weiteren Niederdrücken der Schrauberwelle 3 wird die Schraube 7 durch den Magazinierstreifen 18 hindurchgedrückt, wobei auch die Schrauberwelle 3 durch den Magazinierstreifen 18 nach unten geführt wird bis zur Beendigung des Schraubvorganges. Beim Weiterbewegen der Schrauberwelle 3 nach unten hin wird ein Ausschwenken des Hebels 29 (siehe Fig. 6) bewirkt, so daß die Sperrstellung des Hebels 29 bzw. des Sperrteils 30 aufgehoben wird. Da jedoch zu diesem Zeitpunkt die Schrauberwelle 3 den Magazinierstreifen 18 in seiner Lage festhält, wird zu diesem Zeitpunkt die Vorschubsperre nicht benötigt. Sobald der Hebel 29 durch Wegdrücken des Fortsatzes 33 ausgeschwenkt wird, springt der Sperrteil 30 infolge dessen federnder Ausbildung in die Ruhelage zurück und liegt dann wiederum an der Seitenbegrenzung 36 des Hebels 29 an. Damit ist der Arm 35 nunmehr gegenüber dem Rastnocken 31 am Magazinierstreifen 18 versetzt angeordnet, so daß theoretisch bereits eine Weiterbewegung des Magazinierstreifens 18 möglich wäre. Dies wird aber erst dann möglich, wenn die Schrauberwelle 3 in ihre Ruhelage zurückgezogen ist, wenn also die Schrauberwelle 3 selbst den Magazinierstreifen 18 freigibt. Sofort nach dieser Freigabe setzt sich das Kronenrad 24 wieder zusammen mit der Schrauberwelle 3 in Drehbewegung und bewirkt somit über das Antriebsrad 20 ein Weiterbewegen des Magazinierstreifens 18 bis zu dem durch den Arm 35 des Sperrteiles 30 gebildeten Anschlag, da der Hebel 29 und somit der Sperrteil 30 wiederum eingerastet ist. Es erfolgt also nun wieder ein Vorschub des Magazinierstreifens 18 bis zu der Stellung, in der der Arm 35 des Sperrteiles 30 an der Seitenbegrenzung 37 des Hebels 29 zur Anlage kommt. Es ist dann also wieder ein Schraubvorgang vorbereitet, so daß nurmehr die Schrauberwelle 3 niedergedrückt werden muß.A screwing operation in an embodiment according to FIGS. 1 to 6 will be explained in more detail below: The magazine strip 18, which is provided with screws 7, is inserted into the setting tool 1 in the direction of arrow 40, specifically into the feed channel 19. The drive wheel 28 engages in the toothing 28 of the magazine strip 18 and causes the magazine strip 18 to be transported further by the rotary drive of the screwdriver shaft 3 until the first locking cam 31 comes into contact with the arm 35 of the locking part 30. This arm 35 and thus the locking part 30 are pivoted out by the contact pressure of the locking cam 31 of the magazine strip 18 until the free end of the locking part 30, that is to say the arm 35, comes into contact with the side boundary 37 of the longitudinal recess 34. This arm 35 and thus the locking part 30 are pivoted out by the pressing force of the locking cam 31 of the magazine strip 18 until the free end of the locking part 30, that is to say the arm 35, comes into contact with the side boundary 37 of the longitudinal recess 34. Now further movement of the magazine strip 18 is blocked, so that the drive wheel 20 can no longer rotate. The crown gear 24 thus also stops, the screwdriver shaft 3 being able to move further as a result of the friction clutch provided here. Now the feed takes place by depressing the screwdriver shaft 3. The free end part 41 of the screwdriver shaft 3 receiving the screw nut moves in the direction of the screw head 6 of a screw 7. Because this end part 41 is freely rotatable in the screwdriver shaft 3 and only when pressed in the screwdriver shaft 3 is coupled directly to the setting tool drive, a gentle attachment to the screw head 6 is possible. When the screwdriver shaft 3 is depressed further, the screw 7 is pushed through the magazine strip 18, the screwdriver shaft 3 also being guided downward through the magazine strip 18 until the screwing process is complete. When the screwdriver shaft 3 is moved downward, the lever 29 (see FIG. 6) is pivoted out, so that the locked position of the lever 29 or the locking part 30 is released. However, since the screwdriver shaft 3 holds the magazine strip 18 in place at this time, the feed lock is not required at this time. As soon as the lever 29 is pivoted out by pushing the extension 33 away, the locking part 30 springs back into the rest position as a result of its resilient design and then bears against the side limit 36 of the lever 29. Thus, the arm 35 is now offset from the locking cam 31 on the magazine strip 18, so that theoretically a further movement of the magazine strip 18 would be possible. However, this is only possible when the screwdriver shaft 3 is retracted into its rest position, ie when the screwdriver shaft 3 itself releases the magazine strip 18. Immediately after this release, the crown wheel 24 starts rotating again together with the screwdriver shaft 3 and thus causes the magazine strip 18 to move further via the drive wheel 20 to the stop formed by the arm 35 of the locking part 30, since the lever 29 and thus the locking part 30 is engaged again. The magazine strip 18 is now advanced again to the position in which the arm 35 of the locking part 30 comes to rest against the side boundary 37 of the lever 29. A screwing operation is then prepared again, so that only the screwdriver shaft 3 has to be depressed.

Rein aus dieser Beschreibung des Funktionsablaufes ist ersichtlich, daß ein sicherer und wartungsfreier Vorschub eines Magazinierstreifens 18 ermöglicht wird ohne die Anordnung komplizierter Vorschubhebel, die auf den Vorschub der Schrauberwelle 3 ausgerichtet wären.Purely from this description of the functional sequence, it can be seen that a safe and maintenance-free feed of a magazine strip 18 is made possible without the arrangement of complicated feed levers which would be aligned with the feed of the screwdriver shaft 3.

Aus der Fig. 4 ist noch ersichtlich, daß auf die Einstellschraube 12 eine federbelastete Kugel 53 bzw. ein entsprechender Bolzen einwirkt. Die Einstellschraube 12 weist eine oder mehrere Längsnuten im Bereich des Gewindes auf, so daß in verschiedenen Einstell-Lagen eine Fixierung erfolgen kann, da die Kugel 53 in die entsprechenden Nuten an der Einstellschraube 12 einrasten kann.From Fig. 4 it can still be seen that a spring-loaded ball 53 or a corresponding bolt acts on the adjusting screw 12. The adjusting screw 12 has one or more longitudinal grooves in the area of the thread, so that it can be fixed in different setting positions, since the ball 53 can snap into the corresponding grooves on the adjusting screw 12.

Am freien Ende der Schraubnuß 5 ist ein Federkörper 55 vorgesehen, der durch eine Öffnung 63 in das Innere der Schraubnuß eingreift. Durch diesen Federkörper 55 wird der Schraubenkopf 6 nach dem Einführen in die Schraubnuß 5 federbelastet festgehalten, so daß eine Zentrierung der Schraube auch nach dem Verlassen des Magazinierstreifens 18 gegeben ist.At the free end of the nut 5, a spring body 55 is provided which engages through an opening 63 in the interior of the nut. By means of this spring body 55, the screw head 6 is held in a spring-loaded manner after insertion into the screw nut 5, so that the screw is centered even after it has left the magazine strip 18.

Das Gehäuse 17 läuft an seinem freien Ende in zwei bügelförmige Abstützteile 45 aus, mit denen das Setzgerät 1 auf dem zu verschraubenden Teil aufgesetzt werden kann. An einem Abstützteil 45 kann ein Profilstück 46 befestigt werden, z.B. durch eine lösbare Schnappverbindung 56, um eine Zentrierung bei speziellen Verschraubungen zu erreichen. Das gezeigte Profilstück 45 wird bei Verschraubungen am Wellenberg eines Trapezbleches eingesetzt. So ist immer eine Verschraubung in der Mitte der Profilerhebung gewährleistet. Je nach Einsatzgebiet können hier verschiedene Profilstücke verwendet werden.The housing 17 ends at its free end in two bow-shaped support parts 45, with which the setting tool 1 can be placed on the part to be screwed. A profile piece 46 can be attached to a support part 45, e.g. by a releasable snap connection 56 in order to achieve centering in the case of special screw connections. The profile piece 45 shown is used for screw connections on the crest of a trapezoidal sheet. This ensures a screw connection in the middle of the profile elevation. Depending on the area of application, different profile pieces can be used here.

Bei der Ausführung nach den Fig. 7 bis 11 ist anstelle des als Federelement ausgebildeten Sperrteiles 30 ein mit dem Hebel 29 einstückig ausgebildeter,als Einrastnase ausgeführter Sperrteil 70 vorgesehen. Die seitliche Verschiebbarkeit zur Durchführung der erforderlichen Bewegungen wird hier vom ganzen Hebel 29 übernommen. Der Hebel 29 ist in Richtung seiner Schwenkachse 32 gegen die Reibungskraft der anpressenden Blattfeder 38 verschiebbar, und zwar im Bereich zwischen den beiden Gehäusebegrenzungen 71 und 73. Zum zwangsweisen Verschieben des Hebels 29 bei Einwirken der niedergedrückten Schrauberwelle 3 auf den am freien Ende des Hebels 29 vorgesehenen Fortsatz 33 ist eine Seitenbegrenzung 74 dieses Fortsatzes 33 spitzwinklig zur Verschwenkebene des Hebels 29 ausgerichtet. Diese spitzwinklige Seitenbegrenzung 74 wirkt mit der feststehenden Gehäusebegrenzung 71 zusammen, so daß bei einem Ausschwenken des Hebels 29 in Pfeilrichtung 75 zwangsweise der Hebel 29 in Pfeilrichtung 76 (Fig. 11) verschoben wird, wobei bei diesem Verschieben die Reibungskraft zwischen der andrückenden Blattfeder 38 und der Außenoberfläche des Hebels 29 überwunden werden muß.In the embodiment according to FIGS. 7 to 11, instead of the locking part 30 designed as a spring element, a locking part 70, which is designed in one piece with the lever 29 and is designed as a latching lug, is provided. The lateral displaceability for performing the required movements is taken over by the entire lever 29. The lever 29 can be displaced in the direction of its pivot axis 32 against the frictional force of the pressing leaf spring 38, specifically in the area between the two housing boundaries 71 and 73. For the forced displacement of the lever 29 when the screwdriver shaft 3 acts on the free end of the lever 29 provided Extension 33 is a side boundary 74 of this extension 33 aligned at an acute angle to the pivoting plane of the lever 29. This acute-angled side limitation 74 cooperates with the fixed housing limitation 71, so that when the lever 29 is pivoted out in the direction of arrow 75, the lever 29 is forcibly moved in the direction of arrow 76 (FIG. 11), the frictional force between the pressing leaf spring 38 and the outer surface of the lever 29 must be overcome.

Wie schon ausgeführt, ist der hier vorgesehene Sperrteil 70 als Einrastnase ausgebildet, welche einen Rastanschlag 72 aufweist, welcher an den Rastnocken 31 des Magazinierstreifens zur Anlage kommt. An der dem Rastanschlag 72 gegenüberliegenden Seite weist der Sperrteil 70 eine schräg abfallende Begrenzung 77 auf.As already stated, the locking part 70 provided here is designed as a latching lug, which has a latching stop 72, which comes into contact with the latching cams 31 of the magazine strip. On the side opposite the detent stop 72, the locking part 70 has a sloping boundary 77.

Die Funktion bleibt dabei die gleiche, ob nun die Schwenkachse 32 (Bolzen) fest mit dem Hebel 29 verbunden ist und diese Achse in den entsprechenden Bohrungen verschiebbar ist oder aber, ob diese Schwenkachse 32 (Bolzen) fest im Gehäuse verankert ist und der Hebel 29 eine entsprechend größere Bohrung zur Längsverschiebung auf der Schwenkachse 32 aufweist.The function remains the same whether the pivot axis 32 (bolt) is now firmly connected to the lever 29 and this axis is displaceable in the corresponding bores or whether this pivot axis 32 (bolt) is firmly anchored in the housing and the lever 29 has a correspondingly larger bore for longitudinal displacement on the pivot axis 32.

Auch zu dieser Ausführungsform nach den Fig. 7 bis 11 soll ein Verschraubvorgang nachstehend erläutert werden: Der mit Schrauben 7 besetzte Magazinierstreifen 18 wird in Pfeilrichtung 40 in das Setzgerät 1, und zwar in den Zuführkanal 19 eingeführt. Das Antriebsrad 20 greift in die Verzahnung 28 des Magazinierstreifens 18 ein und bewirkt durch den Drehantrieb der Schrauberwelle 3 einen Weitertransport des Magazinierstreifens 18, bis die erste Rastnocke 31 an dem als Einrastnase ausgebildeten Sperrteil 70 zur Anlage kommt. Dieser Sperrteil 70 und somit auch der ganze Hebel 29 wird unter Überwindung der Reibungskraft zwischen der Blattfeder 38 und der zugeordneten Oberfläche des Hebels 29 gegen die Gehäusebegrenzung 71 verschoben. Sobald die eine Begrenzung des Hebels 29 an dieser Gehäusebegrenzung 71 zur Anlage kommt, ist die Weiterbewegung des Magazinierstreifens 18 gesperrt, so daß sich auch das Antriebsrad 20 nicht mehr weiter drehen kann. Infolge der Reibungskupplung kann sich jedoch die Schrauberwelle 3 weiterdrehen. Es erfolgt nun der Vorschub durch Niederdrücken der Schrauberwelle 3. Die Schraube 7 wird wie auch bereits bei dem vorhergehenden Beispiel erläutert, durch den Magazinierstreifen 18 hindurchgedrückt, wobei auch die Schrauberwelle 3 durch den Magazinierstreifen 18 nach unten geführt wird bis zur Beendigung des Schraubvorganges. Beim Weiterbewegen der Schrauberwelle 3 nach unten hin wird ein Ausschwenken des Hebels 29 in Pfeilrichtung 75 (siehe Fig. 8 und 11) bewirkt, so daß die Sperrstellung des Hebels 29 bzw. des Sperrteiles 70 aufgehoben wird. Da jedoch die Schrauberwelle 3 den Magazinierstreifen 18 in seiner Lage festhält, wird zu diesem Zeitpunkt die Vorschubsperre nicht benötigt. Beim Ausschwenken des Hebels 29 in Pfeilrichtung 75 gleitet die spitzwinklige Seitenbegrenzung 74 des Fortsatzes 33 an der Gehäusebegrenzung 71, so daß während des Verschwenkvorganges des Hebels in Pfeilrichtung 75 dieser zwangsweise auch in Pfeilrichtung 76 seitlich gegen die Gehäusebegrenzung 73 verschoben wird. Durch die Reibung zwischen der Blattfeder 38 und der zugeordneten Oberfläche des Hebels 29 bleibt der Hebel 29 zwangsweise in dieser seitlich verschobenen Stellung, so daß der Rastanschlag 72 des Sperrteiles 70 nunmehr gegenüber dem Rastnocken 31 am Magazinierstreifen 18 (siehe Fig. 11) versetzt angeordnet ist. Dadurch wäre theoretisch bereits eine Weiterbewegung des Magazinierstreifens 18 möglich.A screwing operation is also to be explained below for this embodiment according to FIGS. 7 to 11: The magazine strip 18, which is covered with screws 7, is inserted into the setting tool 1 in the direction of arrow 40, specifically into the feed channel 19. The drive wheel 20 engages in the toothing 28 of the magazine strip 18 and causes the magazine strip 18 to be transported further by the rotary drive of the screwdriver shaft 3 until the first locking cam 31 comes into contact with the locking part 70 designed as a snap-in lug. This locking part 70 and thus also the entire lever 29 is displaced against the housing limitation 71 while overcoming the frictional force between the leaf spring 38 and the associated surface of the lever 29. As soon as the one limit of the lever 29 comes into contact with this housing limit 71, the further movement of the magazine strip 18 is blocked, so that the drive wheel 20 can no longer rotate. As a result of the friction clutch, however, the screwdriver shaft 3 can continue to rotate. The feed is now carried out by depressing the screwdriver shaft 3. The screw 7 is, as already explained in the previous example, pushed through the magazine strip 18, the screwdriver shaft 3 also being guided downward through the magazine strip 18 until the screwing process has ended. When the screwdriver shaft 3 is moved downward, the lever 29 is pivoted out in the direction of arrow 75 (see FIGS. 8 and 11), so that the locked position of the lever 29 or the locking part 70 is released. However, since the screwdriver shaft 3 holds the magazine strip 18 in place, the feed lock is not required at this time. When the lever 29 is pivoted out in the direction of the arrow 75, the acute-angled side boundary 74 of the extension 33 slides on the housing boundary 71, so that during the pivoting operation of the lever in the direction of arrow 75, the latter is also forcibly moved laterally against the housing boundary 73 in the direction of arrow 76. Due to the friction between the leaf spring 38 and the associated surface of the lever 29, the lever 29 inevitably remains in this laterally displaced position, so that the latching stop 72 of the locking part 70 is now offset relative to the latching cam 31 on the magazine strip 18 (see FIG. 11) . In theory, this would already allow the magazine strip 18 to move further.

Dies wird aber erst dann möglich, wenn die Schrauberwelle 3 in ihre Ruhelage nach oben zurückgezogen ist, wenn also die Schrauberwelle 3 selbst den Magazinierstreifen 18 freigibt. Sofort nach dieser Freigabe setzt sich das Kronenrad 24 wieder zusammen mit der Schrauberwelle 3 in Bewegung und bewirkt somit über das Antriebsrad 20 ein Weiterbewegen des Magazinierstreifens 18 bis zu der durch den Rastanschlag 72 des Sperrteiles 70 gebildeten Vorschubsperre, da der Hebel 29 und somit der Sperrteil 70 sofort beim Zurückziehen der Schrauberwelle 3 in ihre Sperrstellung einrasten. Es erfolgt also nun wieder ein Vorschub des Magazinierstreifens 18 bis zu der Stellung, in der der Hebel 29 wiederum an der Gehäusebegrenzung 71 zur Anlage kommt. Es ist dann wieder ein Schraubvorgang vorbereitet, so daß nur mehr die Schrauberwelle 3 niedergedrückt werden muß.However, this is only possible when the screwdriver shaft 3 has been retracted upwards into its rest position, ie when the screwdriver shaft 3 itself releases the magazine strip 18. Immediately after this release, the crown wheel 24 sets in motion again together with the screwdriver shaft 3 and thus causes the magazine strip 18 to move further via the drive wheel 20 to the feed lock formed by the detent stop 72 of the locking part 70, since the lever 29 and thus the locking part 70 immediately snap into their locked position when the screwdriver shaft 3 is pulled back. The magazine strip 18 is now advanced again to the position in which the lever 29 in turn comes to bear against the housing boundary 71. A screwing operation is then prepared again, so that only the screwdriver shaft 3 has to be depressed.

Im Rahmen der Erfindung sind selbstverständlich verschiedene konstruktive Ausführungsvarianten möglich, und zwar sowohl beim Antrieb als auch bei der Vorschubsperre für den Magazinierstreifen. Wesentlich und wichtig ist jedoch, daß der Vorschubantrieb des Magazinierstreifens vom Drehantrieb der Schrauberwelle her abgeleitet wird, wobei zur Unterbrechung dieses Drehantreibes eine Reibungskupplung eingesetzt ist. Außerdem ist es wichtig, eine entsprechende Vorschubsperre vorzusehen, die nach jedem Setzvorgang in einfacher Weise lösbar und wieder einsetzbar ist.Within the scope of the invention, of course, various design variants are possible, both for the drive and for the feed lock for the magazine strip. It is essential and important, however, that the feed drive of the magazine strip is derived from the rotary drive of the screwdriver shaft, a friction clutch being used to interrupt this rotary drive. It is also important to provide a corresponding feed lock that can be easily released and reinserted after each setting process.

Claims (20)

1. A device for feeding fasteners held in a magazine strip (18) to an application tool (1), it being possible to move the magazine strip (18) further before or after each application procedure, and a feed pawl being provided which engages in the feed channel (19) for the magazine strip (18) and which is releasable after each application procedure and can be applied again, and a driving wheel (20) being provided which engages in the feed channel (19) for the magazine strip (18) and which can be operatively connected to the latter, characterized in that the driving wheel (20) can be connected to the rotary drive of the application tool either directly or indirectly by way of a friction clutch (24, 25, 26) arranged in a screwer shaft (3), and a feed pawl which is constructed as a pivotably mounted lever (29) held resiliently in the locking position and which as a stop for engagement dogs (31) projecting on the magazine strip engages in the feed channel (19) for the magazine strip (18) and is caused to swing out by the screwer shaft (3).
2. A device according to Claim 1, characterized in that the feed channel (19), the driving wheel (20) and the friction clutch are arranged in a housing (17) which guides the screwer shaft (3) and which is held rotationally rigidly with respect to the application tool drive (2) and can be disengaged therefrom.
3. A device according to Claim 2, characterized in that the screwer shaft (3) is connected to an application tool drive (2) by way of an engagement coupling (4).
4. A device according to Claim 2, characterized in that the screwer shaft (3) is connected directly to the application tool drive (2), an engagement coupling being integrated in the application tool drive (2).
5. A device according to Claims 1 and 2, characterized in that the driving wheel (20) is constructed as a gearwheel and is connected to the screwer shaft (3) by way of a mitre gear with the interposition of a friction clutch,
6. A device according to Claims 1 to 5, characterized in that the axis (22) of the driving wheel (20) is orientated at right angles to the axis (23) with the screwer shaft (3).
7. A device according to Claims 1 to 6, characterized in that the driving wheel (20) meshes with a crown gear (24) mounted on the screwer shaft (3).
8. A device according to Claims 1, 5 and 7, characterized in that the crown gear (24) is arranged in a sliding seat on the screwer shaft (3), and the crown gear (24) and the screwer shaft (3) are connected in a frictionlocking manner.
9. A device according to Claim 8, characterized in that the through bore of the crown gear (24) has one or more axially parallel grooves (25) into which are inserted leaf springs (26) whose curved portions are resiliently supported on the surface of the screwer shaft (3).
10. A device according to Claims 7 to 9, characterized in that the crown gear (24) is held in the housing (17) so as to be prevented from moving in the axial direction.
11. A device according to Claims 1 to 10, characterized in that the driving wheel (20) is mounted on the inner wall of the housing (17) and with its area remote from the crown gear (24) engages in the feed channel (19) of the magazine strip (18).
12. A device according to Claims 1 and 11, characterized in that the driving wheel (20) and the crown gear (24) are constructed as gearwheels and can be operatively connected to a continuous toothing (28) formed on the edge area of the magazine strip (18).
13. A device according to Claims 1 and 11, characterized in that the driving wheel (20) and the crown gear (24) are constructed as friction wheels which abut against each other with a suitable contact pressure.
14. A device according to Claim 1, characterized in that the lever (29) is provided at its end remote from the pivot axis with an extension engaging in the region of movement of the screwer shaft (3).
15. A device according to Claims 1 and 14, characterized in that the feed pawl is constructed as a locking member (30) which is pivotably and laterally deflectable on the pivotably mounted lever (29) held resiliently in the locking position.
16. A device according to Claims 1, 14 and 15, characterized in that a spring member, which is arranged in a longitudinal recess (34) on the lever (29) and the free end of which comprises an angled freely projecting arm (35) forming the feed stop for the magazine strip (18), is provided as the locking member (30).
17. A device according to Claims 15 and 16, characterized in that the locking member (30) is held resiliently deflectably both in the plane of the lever (29) and transversely to the said plane.
18. A device according to Claims 1 and 14, characterized in that the lever (29) is spring-loaded in the direction of the feed pawl setting by a leaf spring (38) secured to the exterior wall of the housing (17) and covering the lever (29) with its free end.
19. A device according to Claims 1, 14 and 18, characterized in that the lever (29) is displaceable in the direction of its pivot axis (32) against the frictional force of the pressing leaf spring (38), a lateral limit (74) of the extension (33) provided at the free end of the lever (29) being orientated at an acute angle to the plane of displacement of the lever (29) for the forced displacement of the lever (29) during the action of the screwer shaft (3) upon the said extension (33) and cooperating with a fixed housing limit (71).
20. A device according to Claim 19, characterized in that in the region of the feed channel (19) for the magazine strip (18) for acting upon the engagement dogs (31) of the magazine strip the lever (29) comprises a locking member (70) which is integral with the magazine strip (18) and is constructed as an engagement stud and which comprises an inclined limit (77) on the side opposite the engagement stop (72).
EP86107680A 1986-06-05 1986-06-05 Mechanism for feeding fasteners mounted on magazine strips to an application tool Expired EP0248101B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE8686107680T DE3664741D1 (en) 1986-06-05 1986-06-05 Mechanism for feeding fasteners mounted on magazine strips to an application tool
AT86107680T ATE45116T1 (en) 1986-06-05 1986-06-05 DEVICE FOR FEEDING FASTENERS HELD IN A MAGAZINE STRIP TO A SETTING MACHINE.
EP86107680A EP0248101B1 (en) 1986-06-05 1986-06-05 Mechanism for feeding fasteners mounted on magazine strips to an application tool
NO872345A NO164084C (en) 1986-06-05 1987-06-04 DEVICE FOR SUPPLY OF INSTALLATION STORES IN A STORAGE CLEANER TO A SET.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP86107680A EP0248101B1 (en) 1986-06-05 1986-06-05 Mechanism for feeding fasteners mounted on magazine strips to an application tool

Publications (2)

Publication Number Publication Date
EP0248101A1 EP0248101A1 (en) 1987-12-09
EP0248101B1 true EP0248101B1 (en) 1989-08-02

Family

ID=8195172

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86107680A Expired EP0248101B1 (en) 1986-06-05 1986-06-05 Mechanism for feeding fasteners mounted on magazine strips to an application tool

Country Status (4)

Country Link
EP (1) EP0248101B1 (en)
AT (1) ATE45116T1 (en)
DE (1) DE3664741D1 (en)
NO (1) NO164084C (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE127060T1 (en) * 1991-09-16 1995-09-15 Sheh Fung Screws Co Ltd DEVICE FOR POSITIONING AND FEEDING SCREWS.
US6055891A (en) * 1993-02-17 2000-05-02 Habermehl; G. Lyle Exit locating screwdriver
US5699704A (en) * 1993-02-17 1997-12-23 Habermehl; G. Lyle Exit locating collated screw strips and screwdrivers therefore
DE4315403A1 (en) * 1993-05-08 1994-11-10 Reich Maschf Gmbh Karl Screwdriver with a conveyor
US5542323A (en) * 1994-04-28 1996-08-06 G. Lyle Habermehl Screw strip with overlapping washers, and method and apparatus for installation
DE4443497C2 (en) * 1994-12-07 2001-10-18 Opel Adam Ag Screw spindle holder for assembly systems, in particular for motor vehicle assembly
US6212980B1 (en) 1999-08-12 2001-04-10 Vermont American Corporation Screw aligning and guiding device having arrangement which facilitates loading and unloading of screw strip
DE20002058U1 (en) 2000-02-04 2000-05-04 AHORN Geräte- und Werkzeuge-Vertiebs GmbH, 35410 Hungen Magazine with magazine band for a screwdriver
CN102328290B (en) * 2011-09-13 2013-11-27 永康市正大实业有限公司 Automatic feed electric screwdriver

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Publication number Priority date Publication date Assignee Title
US3802222A (en) * 1972-08-30 1974-04-09 Black & Decker Mfg Co Torque-responsive clutch for hedge trimmers and the like
JPS5396170A (en) * 1976-12-29 1978-08-23 Bridgestone Corp Device for feeding constant length of band material
US4139036A (en) * 1977-06-10 1979-02-13 Regan Joseph R Screw starter
AU544421B2 (en) * 1981-02-23 1985-05-23 Nisco Inc. Screw feeding apparatus
FR2553694B1 (en) * 1983-10-19 1991-12-13 Sfs Stadler Ag STORAGE STRIP FOR SCREWS AND DRIVING APPARATUS FOR SCREWS DELIVERED IN THE STORAGE STRIP

Also Published As

Publication number Publication date
NO164084C (en) 1990-08-29
NO872345D0 (en) 1987-06-04
EP0248101A1 (en) 1987-12-09
NO872345L (en) 1987-12-07
ATE45116T1 (en) 1989-08-15
NO164084B (en) 1990-05-21
DE3664741D1 (en) 1989-09-07

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