EP0546382B1 - Hand riveting tool - Google Patents

Hand riveting tool Download PDF

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Publication number
EP0546382B1
EP0546382B1 EP92120141A EP92120141A EP0546382B1 EP 0546382 B1 EP0546382 B1 EP 0546382B1 EP 92120141 A EP92120141 A EP 92120141A EP 92120141 A EP92120141 A EP 92120141A EP 0546382 B1 EP0546382 B1 EP 0546382B1
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EP
European Patent Office
Prior art keywords
sleeve means
lock nut
tool
blind
mandrel
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
Application number
EP92120141A
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German (de)
French (fr)
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EP0546382A1 (en
Inventor
Lothar Freund
Roman Subotsch
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MASCHINENBAU SUBOTSCH VERWALTUNGS- UND BETEILIGUNG
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MASCHINENBAU SUBOTSCH GmbH
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/30—Particular elements, e.g. supports; Suspension equipment specially adapted for portable riveters
    • B21J15/32—Devices for inserting or holding rivets in position with or without feeding arrangements
    • B21J15/326—Broken-off mandrel collection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/02—Riveting procedures
    • B21J15/04—Riveting hollow rivets mechanically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/02—Riveting procedures
    • B21J15/04—Riveting hollow rivets mechanically
    • B21J15/043—Riveting hollow rivets mechanically by pulling a mandrel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/38—Accessories for use in connection with riveting, e.g. pliers for upsetting; Hand tools for riveting
    • B21J15/386—Pliers for riveting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53709—Overedge assembling means
    • Y10T29/53717—Annular work
    • Y10T29/53726—Annular work with second workpiece inside annular work one workpiece moved to shape the other
    • Y10T29/5373—Annular work with second workpiece inside annular work one workpiece moved to shape the other comprising driver for snap-off-mandrel fastener; e.g., Pop [TM] riveter
    • Y10T29/53757—Annular work with second workpiece inside annular work one workpiece moved to shape the other comprising driver for snap-off-mandrel fastener; e.g., Pop [TM] riveter having allochiral actuating handles

Definitions

  • the invention relates to a manually operable blind riveting tool with a device housing, a front sleeve arranged on the front of the device housing, in the front end of which a mouthpiece for receiving a pulling mandrel is fixed, a chuck arranged in the front sleeve behind the mouthpiece for the pulling mandrel, which a movable traction piston, which extends through the device housing and is designed in its interior as a discharge channel for torn off mandrels, and with two articulated levers on the side of the device housing for transmitting an axial force component to the mandrel which leads to a stroke during the actual riveting process.
  • Hand riveters of the type mentioned are well known.
  • the two lever arms must first be opened completely.
  • the pulling piston is moved forward in the device housing and the chuck is opened by a positive connection with the complementary mouthpiece, so that the mandrel of the blind rivet to be inserted can be inserted into the mouthpiece.
  • the two articulated levers are now closed again until the mandrel is gripped by the retracting chuck.
  • an additional axial force component is now transmitted to the mandrel via the pulling piston by further pressing the two lever arms inwards. whereby this breaks off with the formation of the closing head at a predetermined predetermined breaking point.
  • blind riveting devices Since the opening angle of the articulated lever increases with the actual diameter of the mandrel during the actual riveting process, the force required to set a rivet connection increases with the size and strength of the blind rivet to be set in conventional blind riveting devices. In practice, a set of different blind riveting devices adapted to the respective rivet dimensions is usually used to solve this problem. It is also known to use blind riveting devices with an exchangeable front sleeve and, depending on the size and strength of the blind rivet to be fitted, to adjust the force appropriately by means of an appropriately dimensioned sleeve.
  • a blind riveting device which essentially consists of a body, a pulling device and a chuck.
  • the setting of the lever force or the stroke takes place in that a protruding threaded connector is attached to a bridge section, onto which the pulling device can be screwed.
  • a disadvantage of this known blind riveting device is that when the articulated arms for setting rivets are actuated, the adjustment mechanism is also moved back and forth.
  • US Pat. No. 4,653,308 describes a mechanical blind riveting device with which blind rivets of different sizes and thicknesses can be set with essentially the same amount of force.
  • an adjustable lever mechanism which consists of a tension rod, an adjusting screw and a guide or yoke element on which articulated arms are articulated via articulated pieces.
  • the leverage can now be changed in that the adjusting screw, which is screwed onto the tension rod, is turned in the direction of a mouthpiece or turned away from it. This means that an axial displacement of the yoke element with respect to the tension rod ensures the setting of the lever force.
  • the invention is therefore based on the object of making available a hand riveting device of the type mentioned at the outset which enables a safe and firm setting of the stroke over numerous rivet setting cycles and with which the flexibility in using the hand riveting device is increased and the maintenance and repair work is reduced without any outlay on equipment becomes.
  • the front sleeve can be screwed into the device housing and can be locked in its axial position by means of a lock nut steplessly with respect to the chuck and in that way the stroke of the pulling piston can be adjusted by changing the distance between the mouthpiece and the chuck. Since the opening of the chuck takes place via a positive connection with the mouthpiece, the opening angle of the articulated lever can be optimally adjusted by changing the distance between the mouthpiece and the chuck according to the invention with regard to the force required for the riveting process depending on the size and strength of the blind rivets to be set. When setting blind rivets of different diameters, the opening angle of the articulated lever can be changed very easily and quickly according to the respective requirements, and the force required to carry out the riveting process can be set as desired.
  • the front sleeve is expediently provided with an external thread at its rear end, the diameter of the thread provided rear area of the front sleeve is less than that of the front area, so that the front area acts as a stop for the lock nut.
  • the minimum opening angle of the articulated lever which still enables a sufficiently strong lifting movement of the pulling piston for the correct execution of a riveting process, can be determined.
  • a preferred embodiment is characterized in that only a rear section of the lock nut is provided with an internal thread, and that the inside diameter of the front section of the lock nut, which is not provided with an internal thread, is larger than that of the rear section and larger than that of the front section threaded area of the front sleeve.
  • the end of the threaded rear portion of the front sleeve can be used as a mark up to which it is possible to unscrew the front sleeve from the device housing without impairing the operational safety.
  • the lateral surface of the lock nut is advantageously designed to be edged or corrugated in order to be easier to operate manually.
  • Rotational markings are advantageously provided on the front sleeve.
  • a front sleeve 14 is arranged so that it can be screwed in on the front of a device housing 12 and is locked in its axial position by means of a lock nut 16.
  • the front sleeve 14 is on her provided at the rear end with an external thread, the diameter of the threaded area being smaller than that of the front, non-threaded area, so that the front area acts as a stop for the lock nut 16. This is only provided with an internal thread in a rear section.
  • the inside diameter of the front, not provided with an internally threaded portion of the lock nut 16 is larger than that of the front, not provided with a threaded portion of the front sleeve 14, so that it can be screwed into the device housing 12 until it stops at the rear portion of the lock nut 16 is.
  • the thread of the front housing 14 is protected against possible damage by the lock nut under normal operating conditions.
  • the beginning of the non-threaded area of the front sleeve 14 can be used as a mark up to which it is possible to unscrew the front sleeve 14 from the device housing 16 without impairing safety.
  • the circumferential surface of the lock nut 16 is designed with ribbing or corrugation with a view to good manual operability.
  • a mouthpiece 18 for receiving a pulling mandrel (not shown) is fixed.
  • the mouthpiece 18 can either be firmly connected to the front sleeve 14 or, for example, be designed to be exchangeable by means of a screw connection.
  • a chuck 20 for the mandrel is arranged behind the mouthpiece 18.
  • the chuck 20 is connected via a clamping sleeve 22 to a movable pulling piston 24 which extends through the device housing 12 and is designed in its interior as a discharge channel 26 for torn off pulling mandrels.
  • the rear end of the tension piston 24 is fixedly connected to a guide housing 28 which is arranged on a guide sleeve 30 so as to be axially displaceable.
  • the guide sleeve 30 is fixed at its front end to the rear Connected end of the device housing 12 and surrounds the pulling piston 24 between the device housing 12 and guide housing 28.
  • the guide channel 26 opens out through an opening 32 into a collecting container 34 for torn off pulling mandrels in order to avoid a risk of injury to the operator due to pulling mandrels lying around.
  • the collecting container 34 is pushed onto the rear, cylindrical end of the guide housing 28. However, it can also be screwed onto the guide housing 28.
  • Two pliers legs 38 are laterally attached to the guide housing 28 with bolts 36.
  • the front end of the pliers legs 38 is articulated with the aid of a threaded bolt 40 and a lock nut 41 to two lateral articulated levers 42 which are fastened to the device housing 12 at their front end by bolts 44.
  • the rear end of the articulated lever 42 is provided with handles 46 made of plastic.
  • the surface of the handle 46 is designed to be rimmed to prevent slipping during the riveting process. To increase security, they are also plate-shaped in their front area 48.
  • Fig. 2 shows the front part of the hand riveting device 10 according to the invention with the articulated levers 42 fully open.
  • the pulling piston 24 is thereby in the foremost position, so that the chuck 20 is completely opened via a positive connection with the complementary mouthpiece 18 for receiving a pulling mandrel (not shown) is.
  • the front sleeve 14 is screwed out of the device housing 12 so far that its threaded rear area ends with the front end of the lock nut. In this way, the thread is reliably protected against possible damage.
  • This position simultaneously marks the position up to which the hand riveting device according to the invention can be used without impairing safety, so that the opening angle ⁇ of the articulated lever 42 (see FIG. 4) is its maximum value reached.
  • the opening angle of the articulated lever required for minimal effort to carry out the riveting process can thus be set in a targeted manner.
  • the present invention thus makes a hand-held riveting tool available which enables riveting processes with blind rivets of different diameters in a simple manner and without any equipment outlay, with essentially the same amount of force.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Insertion Pins And Rivets (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Massaging Devices (AREA)
  • Materials For Medical Uses (AREA)
  • Food-Manufacturing Devices (AREA)
  • Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
  • Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)

Abstract

In manually actuable blind riveters (10), a front sleeve (14) is arranged on the front side of a riveter housing (12) and a mouthpiece (18) for receiving a mandrel is fixed in the front end of the said sleeve. Arranged in the front sleeve (14), behind the mouthpiece (18), is a chuck (20) for the mandrel and this chuck is connected to a movable pulling piston (24) extending through the riveter housing (12) and having an interior designed as a discharge channel (26) for mandrels which have been torn off. Arranged laterally on the riveter housing (12) are two articulated levers (42) for the transmission of an axial force component to the mandrel leading to a stroke during the actual riveting process. In such blind riveters, the force required to set a riveted joint increases with the size and thickness of the blind rivet to be set. With the blind riveter according to the invention, on the other hand, blind rivets of various sizes and thicknesses can be set in a simple manner with essentially the same expenditure of force in all cases. This is achieved according to the invention by virtue of the fact that the stroke of the pulling piston (24) can be adjusted by altering the distance between the mouthpiece (18) and the chuck (20). <IMAGE>

Description

Die Erfindung betrifft ein manuell betätigbares Blindnietgerät mit einem Gerätegehäuse, einer auf der Vorderseite des Gerätegehäuses angeordneten vorderen Hülse, in deren vorderen Ende ein Mundstück zur Aufnahme eines Zugdorns festgelegt ist, einem in der vorderen Hülse hinter dem Mundstück angeordneten Einspannfutter für den Zugdorn, das mit einem sich durch das Gerätegehäuse erstreckenden, in seinem Inneren als Abführkanal für abgerissene Zugdorne ausgebildeten, beweglichen Zugkolben verbunden ist und mit zwei seitlich an dem Gerätegehäuse angeordneten Gelenkhebeln zur Übertragung einer axialen Kraftkomponente auf den Zugdorn die zu einem Hub während des eigentlichen Nietvorganges führt.The invention relates to a manually operable blind riveting tool with a device housing, a front sleeve arranged on the front of the device housing, in the front end of which a mouthpiece for receiving a pulling mandrel is fixed, a chuck arranged in the front sleeve behind the mouthpiece for the pulling mandrel, which a movable traction piston, which extends through the device housing and is designed in its interior as a discharge channel for torn off mandrels, and with two articulated levers on the side of the device housing for transmitting an axial force component to the mandrel which leads to a stroke during the actual riveting process.

Handnietgeräte der genannten Art sind hinlänglich bekannt. Zur Durchfuhrung eines Nietvorganges müssen zunächst die beiden Hebelarme vollständig geöffnet werden. Hierdurch wird der Zugkolben im Gerätegehäuse nach vorne bewegt und das Binspannfutter durch Formschlußverbindung mit dem komplementär ausgebildeten Mundstück geöffnet, so daß der Zugdorn des zu setzenden Blindnietes in das Mundstück eingeführt werden kann. Die beiden Gelenkhebel werden nun zunächst so weit wieder geschlossen, bis der Zugdorn von dem zurückgleitenden Einspannfutter erfaßt wird. Beim eigentlichen Nietvorgang wird jetzt durch weiteres Zusammendrücken der beiden Hebelarme nach innen eine axiale Kraftkomponente über den Zugkolben auf den Zugdorn übertragen, wodurch dieser unter Ausbildung des Schließkopfes an einer vorgegebenen Sollbruchstelle abbricht. Da sich der Öffnungswinkel der Gelenkhebel beim eigentlichen Nietvorgang mit zunehmenden Durchmesser des Zugdornes vergrößert, erhöht sich bei herkömmlichen Blindnietgeräten der zum Setzen einer Nietverbindung erforderliche Kraftaufwand mit der Größe und Stärke des zu setzenden Blindnietes. Zur Lösung dieses Problems wird in der Praxis üblicherweise ein Satz verschiedener, an die jeweiligen Nietdimensionen angepaßter, Blindnietgeräte verwendet. Es ist auch bekannt, Blindnietgeräte mit austauschbarer vorderer Hülse zu verwenden und je nach Größe und Stärke des zu setzenden Blindnietes den Kraftaufwand durch eine entsprechend dimensionierte Hülse passend einzustellen. Diese Vorgehensweise ist jedoch mit einem entsprechenden apparativen Aufwand verbunden, da entweder ein Satz unterschiedlicher Handnietgeräte vorhanden sein muß oder aber zu jedem Handnietgerät ein Satz von etwa 3 bis 4 speziell ausgebildeten Austauschhülsen mitgeführt werden muß. Ein Austausch der Hülsen zudem nicht nur relativ zeitaufwendig, sondern stellt auch eine Belastung des Bedienungspersonals dar.Hand riveters of the type mentioned are well known. To carry out a riveting process, the two lever arms must first be opened completely. As a result, the pulling piston is moved forward in the device housing and the chuck is opened by a positive connection with the complementary mouthpiece, so that the mandrel of the blind rivet to be inserted can be inserted into the mouthpiece. The two articulated levers are now closed again until the mandrel is gripped by the retracting chuck. During the actual riveting process, an additional axial force component is now transmitted to the mandrel via the pulling piston by further pressing the two lever arms inwards. whereby this breaks off with the formation of the closing head at a predetermined predetermined breaking point. Since the opening angle of the articulated lever increases with the actual diameter of the mandrel during the actual riveting process, the force required to set a rivet connection increases with the size and strength of the blind rivet to be set in conventional blind riveting devices. In practice, a set of different blind riveting devices adapted to the respective rivet dimensions is usually used to solve this problem. It is also known to use blind riveting devices with an exchangeable front sleeve and, depending on the size and strength of the blind rivet to be fitted, to adjust the force appropriately by means of an appropriately dimensioned sleeve. However, this procedure is associated with a corresponding outlay in terms of apparatus, since either a set of different hand riveting devices must be present or a set of about 3 to 4 specially designed exchange sleeves must be carried with each hand riveting device. Replacing the sleeves is not only relatively time-consuming, but also puts a strain on the operating personnel.

Aus der US-A-3 548 627 ist ein Blindnietgerät bekannt, welches im wesentlichen aus einem Körper, einer Zugeinrichtung und einem Einspannfutter besteht. Die Einstellung der Hebelkraft bzw. des Hubs erfolgt dadurch, daß auf einem Brückenabschnitt ein vorstehender Gewindestutzen angebracht ist, auf den die Zugeinrichtung aufschraubbar ist. Bei diesem bekannten Blindnietgerät ist ein Nachteil darin zu sehen, daß mit Betätigung der Gelenkarme zum Setzen von Nieten der Einstellmechanismus ebenfalls hin- und herbewegt wird.From US-A-3 548 627 a blind riveting device is known which essentially consists of a body, a pulling device and a chuck. The setting of the lever force or the stroke takes place in that a protruding threaded connector is attached to a bridge section, onto which the pulling device can be screwed. A disadvantage of this known blind riveting device is that when the articulated arms for setting rivets are actuated, the adjustment mechanism is also moved back and forth.

In der US-A-4 653 308 ist ein mechanisches Blindnietgerät beschrieben, mit dem Blindnieten unterschiedlicher Größe und Stärke bei im wesentlichen gleichem Kraftaufwand gesetzt werden können. Hierzu ist ein einstellbarer Hebelmechanismus vorgesehen, der aus einem Zugstab, einer Einstellschraube und einem Führung- oder oder Jochelement besteht, an dem Gelenkarme über Gelenkstücke angelenkt sind. Die Hebelkraft läßt sich nun dadurch verändern, daß die Einstellschraube, die auf dem Zugstab aufgeschraubt ist, in Richtung eines Mundstücks gedreht oder von diesem weggedreht wird. Dies bedeutet, daß ein axiales Verschieben des Jochelements bezüglich des Zugstabes für das Einstellen der Hebelkraft sorgt.US Pat. No. 4,653,308 describes a mechanical blind riveting device with which blind rivets of different sizes and thicknesses can be set with essentially the same amount of force. For this purpose, an adjustable lever mechanism is provided, which consists of a tension rod, an adjusting screw and a guide or yoke element on which articulated arms are articulated via articulated pieces. The leverage can now be changed in that the adjusting screw, which is screwed onto the tension rod, is turned in the direction of a mouthpiece or turned away from it. This means that an axial displacement of the yoke element with respect to the tension rod ensures the setting of the lever force.

Der Erfindung liegt daher die Aufgabe zugrunde, ein Handnietgerät der eingangs genannten Art verfügbar zu machen, das eine sichere und feste Einstellung des Hubs über zahlreiche Nietsetzzyklen ermöglicht und mit dem ohne apparativen Aufwand die Flexibilität beim Einsatz des Handnietgerätes erhöht sowie der Wartungs- und Reparaturaufwand verringert wird.The invention is therefore based on the object of making available a hand riveting device of the type mentioned at the outset which enables a safe and firm setting of the stroke over numerous rivet setting cycles and with which the flexibility in using the hand riveting device is increased and the maintenance and repair work is reduced without any outlay on equipment becomes.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die vordere Hülse in das Gerätegehäuse einschraubbar und in ihrer axialen Position mittels einer Kontermutter stufenlos in Bezug auf das Einspannfutter arretierbar ist und daß dadurch der Hub des Zugkolbens durch Veränderung des Abstandes zwischen Mundstück und Einspannfutter einstellbar ist. Da die Öffnung des Einspannfutters über eine Formschlußverbindung mit dem Mundstück erfolgt, läßt sich der Öffnungswinkel der Gelenkhebel durch die erfindungsgemäße Veränderung des Abstandes zwischen Mundstück und Einspannfutter im Hinblick auf den für den Nietvorgang erforderlichen Kraftaufwand je nach Größe und Stärke der zu setzenden Blindniete optimal einstellen. Beim Setzen von Blindnieten unterschiedlichen Durchmessers kann der Öffnungswinkel der Gelenkhebel den jeweiligen Erfordernissen entsprechend sehr einfach und schnell verändert und der zur Durchführung des Nietvorgangs erforderliche Kraftaufwand wunschgemäß eingestellt werden.This object is achieved in that the front sleeve can be screwed into the device housing and can be locked in its axial position by means of a lock nut steplessly with respect to the chuck and in that way the stroke of the pulling piston can be adjusted by changing the distance between the mouthpiece and the chuck. Since the opening of the chuck takes place via a positive connection with the mouthpiece, the opening angle of the articulated lever can be optimally adjusted by changing the distance between the mouthpiece and the chuck according to the invention with regard to the force required for the riveting process depending on the size and strength of the blind rivets to be set. When setting blind rivets of different diameters, the opening angle of the articulated lever can be changed very easily and quickly according to the respective requirements, and the force required to carry out the riveting process can be set as desired.

Zweckmäßigerweise ist die vordere Hülse an ihrem hinteren Ende mit einem Außengewinde versehen, wobei der Durchmesser des mit Gewinde versehenen hinteren Bereichs der vorderen Hülse geringer ist als der des vorderen Bereiches, so daß der vordere Bereich als Anschlag für die Kontermutter wirkt. Hierdurch kann der minimale Öffnungswinkel der Gelenkhebel, der noch eine hinreichend starke Hubbewegung des Zugkolbens zur einwandfreien Durchführung eines Nietvorganges ermöglicht, festgelegt werden.The front sleeve is expediently provided with an external thread at its rear end, the diameter of the thread provided rear area of the front sleeve is less than that of the front area, so that the front area acts as a stop for the lock nut. In this way, the minimum opening angle of the articulated lever, which still enables a sufficiently strong lifting movement of the pulling piston for the correct execution of a riveting process, can be determined.

Eine bevorzugte Ausführungsform ist dadurch gekennzeichnet, daß nur ein hinterer Teilbereich der Kontermutter mit einem Innengewinde versehen ist, und daß der Innendurchmesser des vorderen, nicht mit einem Innengewinde versehenen Teilbereiches der Kontermutter größer ist als der des hinteren Teilbereiches und größer als der des vorderen, nicht mit einem Gewinde versehenen Bereiches der vorderen Hülse. In dieser Ausgestaltung kann das Ende des mit Gewinde versehenen hinteren Teilbereiches der vorderen Hülse als Markierung verwendet werden, bis zu der ein Herausschrauben der vorderen Hülse aus dem Gerätegehäuse ohne Beeinträchtigung der Bedienungssicherheit möglich ist. Da der mit einem Innengewinde versehene hinteren Teilbereich der Kontermutter als Anschlag für das vordere Gehäuse wirkt, ist das Außengewinde der vorderen Hülse somit beim normalen Betriebsbedingungen stets durch den nicht mit einem Innengewinde versehene vordere Teilbereich der Kontermutter abgedeckt, so daß eventuelle Beschädigungen der Gewinde sicher vermieden werden. Die Länge dieses vorderen Teilbereiches der Kontermutter ist somit ein Maß für die maximal mögliche Abstandsänderung zwischen Mundstück und Einspannfutter.A preferred embodiment is characterized in that only a rear section of the lock nut is provided with an internal thread, and that the inside diameter of the front section of the lock nut, which is not provided with an internal thread, is larger than that of the rear section and larger than that of the front section threaded area of the front sleeve. In this embodiment, the end of the threaded rear portion of the front sleeve can be used as a mark up to which it is possible to unscrew the front sleeve from the device housing without impairing the operational safety. Since the with an internally threaded rear portion of the lock nut acts as a stop for the front housing, the external thread of the front sleeve is thus always covered by the non-internally threaded front portion of the lock nut in normal operating conditions, so that any damage to the thread can be avoided safely. The length of this front section of the lock nut is thus a measure of the maximum possible change in distance between the mouthpiece and the chuck.

Die Mantelfläche der Kontermutter ist vorteilhafterweise gerändert oder geriffelt ausgebildet, um manuell besser bedienbar zu sein.The lateral surface of the lock nut is advantageously designed to be edged or corrugated in order to be easier to operate manually.

Zweckmäßig sind an der vorderen Hülse Drehmarkierungen vorgesehen.Rotational markings are advantageously provided on the front sleeve.

Die Erfindung soll nachstehend anhand eines Ausführungsbeispiels unter Bezugnahme auf die beigefügten Zeichnungen näher erläutert werden.The invention will be explained below using an exemplary embodiment with reference to the accompanying drawings.

Es zeigen:

Fig. 1
ein erfindungsgemäßes Blindnietgerät im Schnitt;
Fig. 2
eine vergrößerte Darstellung des vorderen Geräteteiles gemäß Fig. 1 bei geöffneten Gelenkhebeln;
Fig. 3
eine Darstellung gemäß Fig. 2 mit teilweise eingeschraubter vorderer Hülse und
Fig. 4
eine schematische Darstellung eines erfindungsgemäßen Blindnietgerätes.
Show it:
Fig. 1
an inventive blind riveting tool in section;
Fig. 2
an enlarged view of the front part of the device shown in Figure 1 with open joint levers.
Fig. 3
2 with a partially screwed in front sleeve and
Fig. 4
a schematic representation of a blind riveting device according to the invention.

Bei dem in Fig. 1 dargestellten Blindnietgerät 10 ist auf der Vorderseite eines Gerätegehäuses 12 eine vordere Hülse 14 einschraubbar angeordnet und in ihrer axialen Position mittels einer Kontermutter 16 arretiert. Die vordere Hülse 14 ist an ihrem hinteren Ende mit einem Außengewinde versehen, wobei der Durchmesser des mit Gewinde versehenen Bereiches geringer ist als der des vorderen, nicht mit einem Gewinde versehenen Bereiches, so daß der vordere Bereich als Anschlag für die Kontermutter 16 wirkt. Diese ist nur in einem hinteren Teilbereich mit einem Innengewinde versehen. Der Innendurchmesser des vorderen, nicht mit einem Innengewinde versehenen Teilbereiches der Kontermutter 16 ist größer als der des vorderen, nicht mit einem Gewinde versehenen Bereiches der vorderen Hülse 14, so daß diese bis zum Anschlag an den hinteren Teilbereich der Kontermutter 16 in das Gerätegehäuse 12 einschraubbar ist. Das Gewinde des vorderen Gehäuses 14 ist bei normalen Betriebsbedingungen durch die Kontermutter vor eventuellen Beschädigungen geschützt. Der Beginn des nicht mit einem Gewinde versehenen Bereiches der vorderen Hülse 14 kann als Markierung verwendet werden, bis zu der ein Herausschrauben der vorderen Hülse 14 aus dem Gerätegehäuse 16 ohne Beeinträchtigung der Sicherheit möglich ist. Die Mantelfläche der Kontermutter 16 ist im Hinblick auf eine gute manuelle Bedienbarkeit gerändert oder geriffelt ausgebildet. In der Spitze der sich an ihrem vorderen Ende konisch verjüngenden vorderen Hülse 14 ist ein Mundstück 18 zur Aufnahme eines - nicht gezeigten - Zugdorns festgelegt. Das Mundstück 18 kann mit der vorderen Hülse 14 entweder fest verbunden sein oder aber z.B. mittels einer Schraubverbindung auswechselbar ausgebildet sein.In the blind riveting device 10 shown in FIG. 1, a front sleeve 14 is arranged so that it can be screwed in on the front of a device housing 12 and is locked in its axial position by means of a lock nut 16. The front sleeve 14 is on her provided at the rear end with an external thread, the diameter of the threaded area being smaller than that of the front, non-threaded area, so that the front area acts as a stop for the lock nut 16. This is only provided with an internal thread in a rear section. The inside diameter of the front, not provided with an internally threaded portion of the lock nut 16 is larger than that of the front, not provided with a threaded portion of the front sleeve 14, so that it can be screwed into the device housing 12 until it stops at the rear portion of the lock nut 16 is. The thread of the front housing 14 is protected against possible damage by the lock nut under normal operating conditions. The beginning of the non-threaded area of the front sleeve 14 can be used as a mark up to which it is possible to unscrew the front sleeve 14 from the device housing 16 without impairing safety. The circumferential surface of the lock nut 16 is designed with ribbing or corrugation with a view to good manual operability. In the tip of the front sleeve 14, which tapers conically at its front end, a mouthpiece 18 for receiving a pulling mandrel (not shown) is fixed. The mouthpiece 18 can either be firmly connected to the front sleeve 14 or, for example, be designed to be exchangeable by means of a screw connection.

In der vorderen Hülse 14 ist hinter dem Mundstück 18 ein Einspannfutter 20 für den Zugdorn angeordnet. Das Einspannfutter 20 ist über eine Klemmhülse 22 mit einem sich durch das Gerätegehäuse 12 erstreckenden, beweglichen Zugkolben 24 verbunden, der in seinem Inneren als Abführkanal 26 für abgerissene Zugdorne ausgebildet ist. Das hintere Ende des Zugkolbens 24 ist fest mit einem Führungsgehäuse 28 verbunden, das auf einer Führungshülse 30 axial verschiebbar angeordnet ist. Die Führungshülse 30 ist an ihrem vorderen Ende fest mit dem hinteren Ende des Gerätegehäuses 12 verbunden und umgibt den Zugkolben 24 zwischen Gerätegehäuse 12 und Führungsgehäuse 28. Der Führungskanal 26 mündet über eine Öffnung 32 in einen Sammelbehälter 34 für abgerissene Zugdorne, um eine Verletzungsgefahr für die Bedienungsperson durch herumliegende Zugdorne zu vermeiden. Der Sammelbehälter 34 wird auf das hintere, zylinderförmig ausgebildete Ende des Führungsgehäuses 28 aufgesteckt. Er kann jedoch auch aufschraubbar auf das Führungsgehäuse 28 ausgebildet sein. An dem Führungsgehäuse 28 sind mit Bolzen 36 zwei Zangenschenkel 38 seitlich befestigt. Das vordere Ende der Zangenschenkel 38 ist mit Hilfe eines Gewindebolzens 40 und einer Sicherungsmutter 41 an zwei seitlichen Gelenkhebeln 42 angelenkt, die an ihrem vorderen Ende durch Bolzen 44 an dem Gerätegehäuse 12 befestigt sind. Das hintere Ende der Gelenkhebel 42 ist mit Handgriffen 46 als Kunststoff versehen. Die Oberfläche der Handgriff 46 ist gerändert ausgebildet, um ein Abrutschen während des Nietvorganges zu verhindern. Zur Erhöhung der Sicherheit sind sie zudem in ihrem vorderen Bereich 48 tellerförmig ausgebildet.In the front sleeve 14, a chuck 20 for the mandrel is arranged behind the mouthpiece 18. The chuck 20 is connected via a clamping sleeve 22 to a movable pulling piston 24 which extends through the device housing 12 and is designed in its interior as a discharge channel 26 for torn off pulling mandrels. The rear end of the tension piston 24 is fixedly connected to a guide housing 28 which is arranged on a guide sleeve 30 so as to be axially displaceable. The guide sleeve 30 is fixed at its front end to the rear Connected end of the device housing 12 and surrounds the pulling piston 24 between the device housing 12 and guide housing 28. The guide channel 26 opens out through an opening 32 into a collecting container 34 for torn off pulling mandrels in order to avoid a risk of injury to the operator due to pulling mandrels lying around. The collecting container 34 is pushed onto the rear, cylindrical end of the guide housing 28. However, it can also be screwed onto the guide housing 28. Two pliers legs 38 are laterally attached to the guide housing 28 with bolts 36. The front end of the pliers legs 38 is articulated with the aid of a threaded bolt 40 and a lock nut 41 to two lateral articulated levers 42 which are fastened to the device housing 12 at their front end by bolts 44. The rear end of the articulated lever 42 is provided with handles 46 made of plastic. The surface of the handle 46 is designed to be rimmed to prevent slipping during the riveting process. To increase security, they are also plate-shaped in their front area 48.

Fig. 2 zeigt das Vorderteil des erfindungsgemäßen Handnietgerätes 10 bei vollständig geöffneten Gelenkhebeln 42. Der Zugkolben 24 befindet sich hierdurch in vorderster Position, so daß das Einspannfutter 20 über eine Formschlußverbindung mit dem komplementär ausgebildeten Mundstück 18 zur Aufnahme eines - nicht gezeigten - Zugdorns vollständig geöffnet ist. Die vordere Hülse 14 ist soweit aus dem Gerätegehäuse 12 herausgedreht, daß ihr mit Gewinde versehene hintere Bereich mit dem vorderen Ende der Kontermutter abschließt. Auf diese Art und Weise ist das Gewinde gegen eventuelle Beschädigung zuverlässig geschützt. Diese Position markiert gleichzeitig die Stellung, bis zu der eine Benutzung des erfindungsgemäßen Handnietgerätes ohne sicherheitstechnische Beeinträchtigung möglich ist, so daß der Öffnungswinkel α der Gelenkhebel 42 (siehe Fig. 4) seinen maximalen Wert erreicht. Bei dieser Stellung des vorderen Gehäuses 14 können somit nur Blindnieten mit relativ geringem Durchmesser problemlos gesetzt werden, während Nietvorgänge mit Blindnieten relativ großen Durchmessers nur unter großem Kraftaufwand möglich sind. Wird nun die vordere Hülse 14 in das Gerätegehäuse 12 eingeschraubt, so wie dies in Fig. 3 dargestellt ist, so erreicht der Zugkolben 24 früher seine Position, bei der das Einspannfutter 20 über eine Formschlußverbindung mit dem Mundstück 18 vollständig geöffnet wird. Der Öffnungswinkel α der Gelenkhebel 42 ist somit geringer als in dem in Fig. 2 dargestellten Beispiel, so daß sich nun Zugdorne großen Durchmessers mit einem Kraftaufwand ziehen lassen, der ansonsten nur für schwächere Zugdorne benötigt würde. Je nach Größe und Stärke des vorliegenden Zugdornes kann somit der für einen minimalen Kraftaufwand zur Durchführung des Nietvorganges erforderliche Öffnungswinkel der Gelenkhebel gezielt eingestellt werden. Die vorliegende Erfindung macht somit ein Handnietgerät verfügbar, das auf einfache Art und Weise und ohne apparativen Aufwand Nietvorgänge mit Blindnieten unterschiedlichen Durchmessers bei im wesentlichen stets gleichem Kraftaufwand ermöglicht.Fig. 2 shows the front part of the hand riveting device 10 according to the invention with the articulated levers 42 fully open. The pulling piston 24 is thereby in the foremost position, so that the chuck 20 is completely opened via a positive connection with the complementary mouthpiece 18 for receiving a pulling mandrel (not shown) is. The front sleeve 14 is screwed out of the device housing 12 so far that its threaded rear area ends with the front end of the lock nut. In this way, the thread is reliably protected against possible damage. This position simultaneously marks the position up to which the hand riveting device according to the invention can be used without impairing safety, so that the opening angle α of the articulated lever 42 (see FIG. 4) is its maximum value reached. With this position of the front housing 14, only blind rivets with a relatively small diameter can thus be set without any problems, while riveting processes with blind rivets of a relatively large diameter are only possible with great effort. If the front sleeve 14 is now screwed into the device housing 12, as shown in FIG. 3, the pulling piston 24 reaches its position earlier, in which the chuck 20 is completely opened via a positive connection with the mouthpiece 18. The opening angle α of the articulated lever 42 is thus smaller than in the example shown in FIG. 2, so that now mandrels of large diameter can be pulled with an effort that would otherwise only be required for weaker mandrels. Depending on the size and strength of the mandrel present, the opening angle of the articulated lever required for minimal effort to carry out the riveting process can thus be set in a targeted manner. The present invention thus makes a hand-held riveting tool available which enables riveting processes with blind rivets of different diameters in a simple manner and without any equipment outlay, with essentially the same amount of force.

Claims (5)

  1. A manually actuable blind riveting tool (10) comprising a tool housing (12) having a front end, a sleeve means (14) arranged at the front end of the tool housing (12) and having a front end, a mouthpiece member (18) at the front end of the sleeve means (14) for receiving a pulling mandrel of a rivet, a collet (20) for clamping the pulling mandrel, arranged in the sleeve means (14) behind the mouthpiece member (18), a movable pulling plunger (24) which extends through the tool housing (12) and is connected to the collet (20) and provides in its interior a discharge passage (26) for a torn-away pulling mandrel, first and second pivotal levers (42) arranged laterally on the tool housing (12) for the transmission of an axial force component to the pulling plunger which results in a stroke movement thereof during the actual riveting operation,
    characterized in that
    said front end sleeve means (14) is adapted to be screwed into the tool housing (12) and further including a lock nut (16) for steplessly arresting the sleeve means (14) in its axial position with respect to the collet (20) and
    that the stroke movement of the pulling plunger (24) is adjustable by varying the spacing between the mouthpiece member (18) and the collet (20).
  2. A tool as set forth in claim 1 wherein the front end sleeve means (14) has a rear end region provided with an external screwthread and wherein the diameter of the screwthreaded rear end region of the sleeve means (14) is smaller than that of the front end region thereof so that the front end region acts as an abutment means for the lock nut (16).
  3. A tool as set forth in claim 2 wherein the lock nut (16) has a front portion and a rear portion, wherein only the rear portion of the lock nut (16) is provided with an internal screwthread, and wherein the inside diameter of the unthreaded front portion of the lock nut (16) is larger than that of the rear portion and is larger than that of the unthreaded front end region of the sleeve means (14).
  4. A tool as swet forth in anyone of claims 1 to 3 wherein the peripheral surface of the lock nut (16) is adapted to be knurled or milled.
  5. A tool as set forth in anyone of claims 1 to 4 including rotational markings on the sleeve means (14).
EP92120141A 1991-12-13 1992-11-26 Hand riveting tool Expired - Lifetime EP0546382B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9115444U DE9115444U1 (en) 1991-12-13 1991-12-13 Hand riveter
DE9115444U 1991-12-13

Publications (2)

Publication Number Publication Date
EP0546382A1 EP0546382A1 (en) 1993-06-16
EP0546382B1 true EP0546382B1 (en) 1995-08-30

Family

ID=6874166

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Application Number Title Priority Date Filing Date
EP92120141A Expired - Lifetime EP0546382B1 (en) 1991-12-13 1992-11-26 Hand riveting tool

Country Status (13)

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US (1) US5323521A (en)
EP (1) EP0546382B1 (en)
JP (1) JPH05245577A (en)
KR (1) KR100343799B1 (en)
AT (1) ATE127048T1 (en)
AU (1) AU666498B2 (en)
CA (1) CA2079497C (en)
CZ (1) CZ282322B6 (en)
DE (2) DE9115444U1 (en)
ES (1) ES2076656T3 (en)
HU (1) HU212535B (en)
RU (1) RU2096123C1 (en)
TW (1) TW203575B (en)

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CZ2362U1 (en) * 1993-09-14 1994-09-15 Josef Wihan Hand-operated riveting tool
DE19809354A1 (en) * 1998-03-05 1999-09-09 Gesipa Blindniettechnik Hand riveting pliers
CZ12144U1 (en) * 2002-02-18 2002-03-28 Ms Nářadí, S.R.O. Clamping joint of exchangeable mandrel and pulling pin of a riveting tool and use of such clamping joint for hand-held riveting tool
US7146698B2 (en) * 2002-02-18 2006-12-12 Masterfix Products B.V. Hand-held riveting tool
CA2553212A1 (en) * 2004-01-15 2005-08-04 David J. Fulbright A fastener installaton system
US20050211452A1 (en) * 2004-03-24 2005-09-29 A Major Corporation Spring powered hand tool
GB2442447B (en) * 2006-10-03 2009-06-03 Textron Fastening Syst Ltd Improved riveting apparatus
US8500739B2 (en) * 2007-04-06 2013-08-06 DePuy Synthes Products, LLC Securing device to secure fixation devices to bone portions
TW201012567A (en) * 2008-09-23 2010-04-01 Karat Ind Corp Manual two-hand-handle type blind rivet tool having discarded rivet core collection device
US8307690B2 (en) * 2009-08-28 2012-11-13 Sps Technologies, Llc Hand-tool system for installing blind fasteners
CN101745597B (en) * 2010-01-28 2011-09-28 余姚市嘉合工具厂 Small and skillful dual-handle hand riveter
WO2012071981A1 (en) * 2010-12-03 2012-06-07 Yuan Jianming Rivet nut gun
CN102485375B (en) * 2010-12-03 2014-02-12 余姚唐文工具有限公司 Riveting nut gun
NL2006530C2 (en) * 2011-04-04 2012-10-08 J M E L Aarts Man B V BLIND RIVER TOOLS FOR POSITIONING AND DEFORMING BLIND RIVETS AND / OR BLIND RIVET NUTS.
TWI495523B (en) * 2012-08-03 2015-08-11 Karat Ind Corp Double handle type can pull the pull rod pull cap (pull bolt) tool
CA2947276A1 (en) * 2014-04-30 2015-11-05 DePuy Synthes Products, Inc. Tensioning instrument and related bone fixation systems
CN105499472B (en) * 2014-10-16 2018-06-12 余姚金马工具制造有限公司 Nut riveter
MX2018005052A (en) * 2015-11-02 2020-01-23 Olsson Gorn Handheld handle-powered pull riveter.
CN106903260B (en) * 2017-02-27 2018-11-13 张慧成 Manual running fire hand riveter and staking method
US10118216B1 (en) * 2017-07-26 2018-11-06 Yuyao Tangwen Tool Co., Ltd Thrust rivet gun

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DE9110718U1 (en) * 1991-08-29 1992-06-04 Alfred Honsel Nieten- und Metallwarenfabrik GmbH & Co, 5758 Fröndenberg Blind rivet hand pliers

Also Published As

Publication number Publication date
KR100343799B1 (en) 2002-11-13
US5323521A (en) 1994-06-28
KR930012140A (en) 1993-07-20
CZ302692A3 (en) 1993-06-16
HU9203935D0 (en) 1993-04-28
CA2079497C (en) 1995-06-06
ES2076656T3 (en) 1995-11-01
CZ282322B6 (en) 1997-06-11
HUT71015A (en) 1995-11-28
RU2096123C1 (en) 1997-11-20
DE59203467D1 (en) 1995-10-05
AU666498B2 (en) 1996-02-15
CA2079497A1 (en) 1993-06-14
HU212535B (en) 1996-07-29
ATE127048T1 (en) 1995-09-15
JPH05245577A (en) 1993-09-24
AU2607692A (en) 1993-06-17
TW203575B (en) 1993-04-11
DE9115444U1 (en) 1992-02-13
EP0546382A1 (en) 1993-06-16

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