EP0616873B1 - Screwdriving tool for screws connected by a strip - Google Patents
Screwdriving tool for screws connected by a strip Download PDFInfo
- Publication number
- EP0616873B1 EP0616873B1 EP94104059A EP94104059A EP0616873B1 EP 0616873 B1 EP0616873 B1 EP 0616873B1 EP 94104059 A EP94104059 A EP 94104059A EP 94104059 A EP94104059 A EP 94104059A EP 0616873 B1 EP0616873 B1 EP 0616873B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- screw
- lift
- unit according
- screwdriving
- strip
- 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 - Lifetime
Links
Images
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 screwdriver for taped screws according to the preamble of claim 1.
- the screw strip is moved in the direction of the screw blade by means of a conveying device and during the screwing-in process the screw to be screwed in is released from the connecting belt, the loop being torn open.
- parts of the connecting belt can get between the screw head and the workpiece surface when screwing in, which is particularly disruptive for sensitive workpieces.
- the object of the present invention is therefore to provide a screwing device of the type mentioned, in which the screw is separated from the connecting belt safely and without residues during the screwing-in process.
- the complete separation of the connecting belt from the screw to be screwed in by the lifting element according to the invention ensures that the screw is screwed into the workpiece unimpeded and without entrainment of parts of the connecting belt.
- a guide channel 11 is provided for the screw strip 2, which opens into a guide bore 12. This is aligned with a bearing bore 13 for the screw blade 14, so that the first screw 3 'of screw strip 2 is also aligned with the screw blade 14.
- the screw blade 14 can be driven by an indicated electric motor 15, when the screw 3 'is screwed into the workpiece 16, the shaft 8 of the screw 3' is guided by an elastic centering funnel 17.
- a lifting member 18 is pivotally mounted in the bearing body 1 at the end of the guide channel 11, its pivot axis 19 being arranged inclined to the guide bore 12.
- a form spring 20 presses it against a stop surface 21 of the bearing body 1.
- the lifting element 18 is essentially angled, the free holding back 6 ′ of the connecting belt 5 being pushed in front of a leg 22 of the lifting element 18. This also has an inclined and curved contact surface 23 directed against the guide channel 11 and a prismatic centering surface 24 parallel to the guide bore 12.
- the function of the lifting element 18 is assumed to be in its rest position shown in FIGS. 1 and 3. After switching on the electric motor 15, it sets the screw blade 14 in rotation and this is moved in the direction of the workpiece 16 by pressing the electric motor 15 in the bearing body. After the head 9 of the screw 3 'has been reached, this is also set in rotation, the connecting belt 5 being displaced by the thread of the shaft 8 shown in the loop 7 counter to the direction of advance of the screw 3 becomes. It is prevented from further movement by a stop surface 25 of the lifting element 18, so that the loop 7 tears open and the connection between the screw 3 'and the connecting belt 5 is released.
- the sealing disk 10 now touches the contact surface 23 of the lifting element 18 and pivots it clockwise, it reaching the lifting position shown in FIG. 4.
- the leg 22 of the lifting member 18 takes the free end 6 'of the holding back 6 and pivots it out of the screw-in area of the screw 3', so that it can be screwed into the workpiece and guided by the centering funnel 17 perpendicular to the surface of the workpiece 16.
- the conveying device 4 is tensioned in a known manner, so that after the return of the screw blade 14 to its rest position, the lifting element 18 returns to its rest position under the action of the shaped spring 20 and the screw strip 2 is displaced in the direction of the guide bore 12 until the next screw 3 is aligned with the screw blade 14, its shaft 8 striking against the centering surface 24 of the lifting element 18.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
- Transmission Devices (AREA)
Description
Die Erfindung bezieht sich auf ein Schraubgerät für gegurtete Schrauben gemäß Oberbegriff von Anspruch 1.The invention relates to a screwdriver for taped screws according to the preamble of claim 1.
Aus der DE-OS 26 41 828 ist es bekannt, gegurtete Schrauben mit einem tragbaren und mit einem Magazin versehenen Schraubgerät zu verarbeiten. Zum Halten der Schrauben dient ein Verbindungsgurt aus Kunststoff, wobei die Schäfte der Schrauben von Schlingen des Verbindungsgurts umfasst werden.From DE-OS 26 41 828 it is known to process taped screws with a portable screwing device provided with a magazine. A plastic connecting strap is used to hold the screws, the shafts of the screws being encompassed by loops of the connecting strap.
Der Schraubenstreifen wird mittels einer Fördervorrichtung in Richtung Schraubklinge bewegt und beim Einschraubvorgang löst sich die einzuschraubende Schraube vom Verbindungsgurt, wobei die Schlinge aufgerissen wird. Dabei können jedoch Teile des Verbindungsgurts beim Einschrauben zwischen Schraubenkopf und Werkstückoberfläche gelangen, was sich insbesondere bei empfindlichen Werkstücken sehr störend bemerkbar macht.The screw strip is moved in the direction of the screw blade by means of a conveying device and during the screwing-in process the screw to be screwed in is released from the connecting belt, the loop being torn open. However, parts of the connecting belt can get between the screw head and the workpiece surface when screwing in, which is particularly disruptive for sensitive workpieces.
Aufgabe der vorliegenden Erfindung ist daher die Schaffung eines Schraubgeräts der eingangs genannten Art, bei dem die Schraube beim Einschraubvorgang sicher und ohne Rückstände vom Verbindungsgurt getrennt wird.The object of the present invention is therefore to provide a screwing device of the type mentioned, in which the screw is separated from the connecting belt safely and without residues during the screwing-in process.
Diese Aufgabe wird erfindungsgemäß durch das im kennzeichnenden Teil des Anspruchs 1 angegebene Merkmal gelöst.This object is achieved by the feature specified in the characterizing part of claim 1.
Durch die vollständige Trennung des Verbindungsgurts von der einzuschraubenden Schraube durch das erfindungsgemäße Abhebeorgan wird sicher gewährleistet, daß die Schraube ungehindert und ohne Mitnahme von Teilen des Verbindungsgurts ins Werkstück eingeshraubt wird.The complete separation of the connecting belt from the screw to be screwed in by the lifting element according to the invention ensures that the screw is screwed into the workpiece unimpeded and without entrainment of parts of the connecting belt.
Dies wirkt sich besonders vorteilhaft bei Schrauben mit großen Kopfdurchmessern bzw mit untergelegten Dichtscheiben aus, wobei das Abhebeorgan den Verbindungsgurt soweit aus dem Einschraubweg der Schraube herausschwenkt, daß diese beim Einschrauben nicht behindert wird. Damit ist ein einwandfreies und gerades Einschrauben gewährleistet.This is particularly advantageous in the case of screws with large head diameters or with underlying sealing washers, the lifting element pivoting the connecting belt out of the screw-in path of the screw to such an extent that it is not hindered when screwing in. This guarantees a perfect and straight screwing.
Durch die Unteransprüche sind vorteilhafte Weiterbildungen der Erfindung gekennzeichnet.Advantageous developments of the invention are characterized by the subclaims.
Im Folgenden ist ein Ausführungsbeispiel der Erfindung unter Bezug nahme auf die Zeichnungen näher beschrieben.An exemplary embodiment of the invention is described in more detail below with reference to the drawings.
Es zeigen:
- Fig. 1
- Lagerkörper eines Schraubgeräts, von der Seite, teilweise geschnitten
- Fig. 2
- Schnitt nach Linie II - II in Fig. 1
- Fig. 3
- Schnitt nach Linie III - III in Fig. 1, Abhebeorgan in Ruhestellung
- Fig. 4
- wie Fig. 3, Abhebeorgan in Abhebestellung
- Fig. 1
- Bearing body of a screwdriver, partially cut from the side
- Fig. 2
- Section along line II - II in Fig. 1
- Fig. 3
- Section along line III - III in Fig. 1, lifting element in the rest position
- Fig. 4
- as Fig. 3, lifting element in the lifting position
Im Lagerkörper 1 ist ein Führungskanal 11 für den Schraubenstreifen 2 vorgesehen, der in eine Führungsbohrung 12 mündet. Diese fluchtet mit einer Lagerbohrung 13 für die Schraubklinge 14, so daß die erste Schraube 3' von Schraubenstreifen 2 ebenfalls mit der Schraubklinge 14 fluchtet.In the bearing body 1, a
Die Schraubklinge 14 ist durch einen angedeuteten Elektromotor 15 antreibbar, beim Einschrauben der Schraube 3' in das Werkstück 16 wird der Schaft 8 der Schraube 3' von einem elastischen Zentriertrichter 17 geführt.The
Wie insbesondere Fig. 2 und 3 zeigen, ist im Lagerkörper 1 am Ende von Führungskanal 11 ein Abhebeorgan 18 schwenkbar gelagert, wobei seine Schwenkachse 19 zur Führungsbohrung 12 geneigt angeordnet ist. Bei der in Fig. 3 dargestellten Ruhestellung von Abhebeorgan 18 drückt eine Formfeder 20 dieses gegen eine Anschlagfläche 21 von Lagerkörper 1.2 and 3 in particular, a
Das Abhebeorgan 18 ist im wesentlichen winkelförmig ausgebildet, wobei der freie Halterücken 6' von Verbindungsgurt 5 sich vor einen Schenkel 22 von Abhebeorgan 18 schiebt. Dieses weist außerdem eine gegen den Führungskanal 11 gerichtete geneigte und gewölbte Kontaktfläche 23 sowie eine zur Führungsbohrung 12 parallele, prismatische Zentrierfläche 24 auf.The
Zur Funktion des Abhebeorgans 18 sei von seiner in Fig. 1 und 3 dargestellten Ruhestellung ausgegangen. Nach dem Einschalten von Elektromotor 15 setzt dieser die Schraubklinge 14 in Drehung und diese wird durch Andrücken des Elektromotors 15 im Lagerkörper in Richtung Werkstück 16 verschoben. Nach Erreichen von Kopf 9 von Schraube 3' wird diese ebenfalls in Drehung versetzt, wobei der Verbindungsgurt 5 durch das in der Schlinge 7 abgebildete Gewinde von Schaft 8 entgegen der Vorschubrichtung der Schraube 3 verschoben wird. Er wird von einer Anschlagfläche 25 des Abhebeorgans 18 an einer Weiterbewegung gehindert, so daß die Schlinge 7 aufreißt und sich die Verbindung zwischen Schraube 3' und Verbindungsgurt 5 löst.The function of the
Die Dichtscheibe 10 berührt jetzt die Kontaktfläche 23 von Abhebeorgan 18 und verschwenkt dieses im Uhrzeigersinn, wobei es in die in Fig. 4 dargestellte Abhebestellung gelangt. Damit nimmt der Schenkel 22 von Abhebeorgan 18 das freie Ende 6' von Halterücken 6 mit und verschwenkt es aus dem Einschraubbereich von Schraube 3', so daß diese unbehindert und vom Zentriertrichter 17 geführt senkrecht zur Oberfläche von Werkstück 16 in dieses eingeschraubt werden kann.The sealing
Beim Einschraubvorgang wird in bekannter Weise die Fördervorrichtung 4 gespannt, so daß nach dem Zurückführen von Schraubklinge 14 in ihre Ruhestellung das Abhebeorgan 18 unter Wirkung der Formfeder 20 in seine Ruhestellung zurückkehrt und der Schraubenstreifen 2 in Richtung Führungsbohrung 12 verschoben wird, bis die nächste Schraube 3 mit der Schraubklinge 14 fluchtet, wobei ihr Schaft 8 an der Zentrierfläche 24 von Abhebeorgan 18 anschlägt.During the screwing-in process, the conveying device 4 is tensioned in a known manner, so that after the return of the
Claims (8)
- A screwdriving unit for belt-fed screws having a bearing element in which a drivable screw- driver blade is movably mounted, having a guide channel vertical thereto for the screws linked up to a screw strip by at least one connecting belt, having a conveying device for said screw strip, and having a guide hole for the screw to be screwed in, characterized in that a movable lift-off element (18) is provided in said guide channel (11) in the area of said guide hole (12) and is actuatable transversely to said guide channel (11) such that it lifts said connecting belt (5) off said screw (3') to be screwed in.
- A screwdriving unit according to Claim 1, characterized in that said lift-off element (18) interacts with the free end of said connecting belt (5).
- A screwdriving unit according to Claim 1 or Claim 2, characterized that said lift-off element (18) is actuatable by said screw (3') to be screwed in.
- A screwdriving unit according to one of Claims 1 to 3, characterized in that said lift-off element (18) is pivotably mounted in said bearing element (1).
- A screwdriving unit according to Claim 4, characterized in that the swivel axis (19) of said lift-off element (18) is disposed inclined in relation to said guide hole (12).
- A screwdriving unit according to one of Claims 1 to 5, characterized in that said lift-off element (18) has an inclined contact surface (23) oriented towards said screwdriver blade (14).
- A screwdriving unit according to one of Claims 1 to 6, characterized in that said lift-off element (18) has a centering surface (24) for said screw (3') oriented towards said guide channel (11) and parallel to said guide hole (12).
- A screwdriving unit according to one of Claims 3 to 7, characterized in that said screw (3') has in its head portion (9, 10) a considerably larger diameter in relation to the shank (8) and in that said lift-off element (18) is actuatable by said head portion (9, 10).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4308998 | 1993-03-20 | ||
DE4308998A DE4308998A1 (en) | 1993-03-20 | 1993-03-20 | Screwdriver for taped screws |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0616873A1 EP0616873A1 (en) | 1994-09-28 |
EP0616873B1 true EP0616873B1 (en) | 1996-07-17 |
Family
ID=6483347
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94104059A Expired - Lifetime EP0616873B1 (en) | 1993-03-20 | 1994-03-16 | Screwdriving tool for screws connected by a strip |
Country Status (4)
Country | Link |
---|---|
US (1) | US5433129A (en) |
EP (1) | EP0616873B1 (en) |
JP (1) | JPH06297350A (en) |
DE (2) | DE4308998A1 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5890405A (en) * | 1996-09-11 | 1999-04-06 | Becker; Burkhard | Automated screw driving device |
JP3333114B2 (en) * | 1997-06-30 | 2002-10-07 | 株式会社ムロコーポレーション | Continuous screw tightening machine |
US7603758B2 (en) * | 1998-12-07 | 2009-10-20 | Shell Oil Company | Method of coupling a tubular member |
US6601480B1 (en) * | 2000-09-15 | 2003-08-05 | G. Lyle Habermehl | Autofeed screwdriver for screws with flat head bottoms |
US7100685B2 (en) * | 2000-10-02 | 2006-09-05 | Enventure Global Technology | Mono-diameter wellbore casing |
US7918284B2 (en) | 2002-04-15 | 2011-04-05 | Enventure Global Technology, L.L.C. | Protective sleeve for threaded connections for expandable liner hanger |
GB2408277B (en) * | 2002-07-19 | 2007-01-10 | Enventure Global Technology | Protective sleeve for threaded connections for expandable liner hanger |
CA2499071C (en) * | 2002-09-20 | 2014-06-03 | Enventure Global Technology | Self-lubricating expansion mandrel for expandable tubular |
DE102018131945A1 (en) * | 2018-12-12 | 2020-06-18 | Airbus Operations Gmbh | Screw feeder for a screwdriver |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1603946B1 (en) * | 1967-04-07 | 1971-07-01 | Reich Maschf Gmbh Karl | Impact device for fasteners fed into a magazine strip |
US3698599A (en) * | 1971-02-19 | 1972-10-17 | Atlas Copco Ab | Feed to driving tool having band held screws |
DE2641828C3 (en) * | 1976-09-17 | 1981-03-26 | Karl M. Reich Maschinenfabrik GmbH, 72622 Nürtingen | Driver for screws or the like connected to form a strip. |
US4367837A (en) * | 1980-04-25 | 1983-01-11 | Manino Anthony P | Tape magazine feed apparatus for head driven fasteners |
JPH02232178A (en) * | 1989-03-06 | 1990-09-14 | Masaki Kawashima | Fastener tightening machine |
-
1993
- 1993-03-20 DE DE4308998A patent/DE4308998A1/en not_active Withdrawn
-
1994
- 1994-03-16 DE DE59400422T patent/DE59400422D1/en not_active Expired - Lifetime
- 1994-03-16 EP EP94104059A patent/EP0616873B1/en not_active Expired - Lifetime
- 1994-03-18 US US08/210,675 patent/US5433129A/en not_active Expired - Fee Related
- 1994-03-18 JP JP6049099A patent/JPH06297350A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
DE4308998A1 (en) | 1994-09-22 |
US5433129A (en) | 1995-07-18 |
EP0616873A1 (en) | 1994-09-28 |
DE59400422D1 (en) | 1996-08-22 |
JPH06297350A (en) | 1994-10-25 |
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