EP2490306B1 - Crimping tool - Google Patents

Crimping tool Download PDF

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Publication number
EP2490306B1
EP2490306B1 EP12155751.6A EP12155751A EP2490306B1 EP 2490306 B1 EP2490306 B1 EP 2490306B1 EP 12155751 A EP12155751 A EP 12155751A EP 2490306 B1 EP2490306 B1 EP 2490306B1
Authority
EP
European Patent Office
Prior art keywords
punch
crimping
crimping tool
abutment
anvil
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.)
Not-in-force
Application number
EP12155751.6A
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German (de)
French (fr)
Other versions
EP2490306A2 (en
EP2490306A3 (en
Inventor
Michael Gerst
Martin Lipp
Guenter Sowa
Horst Knapp
Lothar Bauer
Horst Strebert
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.)
TE Connectivity Germany GmbH
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TE Connectivity Germany GmbH
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Filing date
Publication date
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Publication of EP2490306A2 publication Critical patent/EP2490306A2/en
Publication of EP2490306A3 publication Critical patent/EP2490306A3/en
Application granted granted Critical
Publication of EP2490306B1 publication Critical patent/EP2490306B1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/048—Crimping apparatus or processes
    • H01R43/0488—Crimping apparatus or processes with crimp height adjusting means

Definitions

  • the invention relates to a crimping tool according to claim 1.
  • crimping tools are known in the prior art which automatically make a crimp or press fit between a crimping element and a stripped conductor or an insulation of a conductor by means of a crimping press.
  • the crimping element is struck in a defined manner, ie with a predetermined crimping stroke.
  • crimping tools which perform a fixed stroke of the punch. Different conductor diameters may make it necessary to be able to set the stroke of the crimping press differently.
  • the setting can be made manually or via an operating unit such. B. in the EP 0 884 881 A1 described be performed.
  • a crimping tool that includes a punch and anvil for making a crimped connection between a crimping element and a conductor.
  • the punch is movably guided in a holder, wherein the punch is in operative connection with a contact element.
  • the abutment element is provided to receive a force from an actuator and to set the plunger in motion.
  • the punch is connected via a mechanically fixed connection with the contact element.
  • a cutting device is provided, which is resiliently mounted in the contact element.
  • a spring-mounted piston is provided, which can be brought into contact with the actuating device.
  • a crimping tool which has a punch and an anvil for producing a crimp connection between a crimping element and a conductor, wherein the punch is connected via a spring element with a contact element in operative connection.
  • the abutment element is provided to receive a force from an actuator and to set the plunger in motion.
  • a device for cutting and stripping an insulated wire.
  • the knife for stripping the wire is connected via a coil spring resiliently connected to an actuating device.
  • a stop is provided which limits the movement of the movable blade to a predetermined maximum deflection.
  • the object of the invention is to provide a crimping tool with an improved mode of operation, wherein in particular with a higher probability a correct or a precisely predetermined crimp height can be set.
  • the object of the invention is achieved by the crimping tool according to claim 1.
  • the resilient element is preferably located either in the press ram or in the plunger.
  • the springy Element makes it possible, for example, to drive an eccentric press through a bottom dead center, although the ram already rests previously on the stop.
  • the spring force is preferably greater than the required crimping force.
  • a crimping tool is fixed to a crimp height. That after a tool change no further adjustments to the crimping press must be made. This reduces the work preparation.
  • a stop is provided which limits a maximum deflection of the punch in the direction of the anvil. In this way it is ensured that damage to the crimping element or the electrical conductor is avoided by a too large stroke of the punch.
  • the combination of the resilient mounting of the punch and the stop it is possible to achieve a defined movement of the punch in the manufacture of the crimped connection
  • an actuating device which moves the punch via the contact element, wherein a stroke of the actuating device is formed in such a way that the punch is moved during the actuation of the contact element in abutment with the stop.
  • the stroke of the actuator is formed larger than the stroke of the punch to the stop.
  • the spring element is designed in the form of a plate spring.
  • Disc springs are particularly suitable for the required resilient mounting of the punch and / or the anvil.
  • the abutment element has a guide element which is movably guided in a bore of the stamp.
  • the spring element is arranged between a contact surface of the punch and a contact surface of the guide element.
  • the punch has a collar which serves to bear the spring element.
  • the spring element is arranged between an end face of the guide element and a contact surface of the punch. In this way, a storage of the spring element is possible, in which the field element is protected against environmental influences. In particular, a contamination or impairment of the operation of the resilient mounting is avoided by foreign parts.
  • Fig. 1 shows a schematic representation of a crimping tool 1, which essentially comprises a holder 2, a punch 3, an anvil 4 and an actuating device 5 for moving the punch 3.
  • the anvil 4 is attached to a support plate 6 of the holder 2.
  • the punch 3 is mounted above the anvil 4 in a guide 7 of the holder 2 in an axial direction along a movement axis 8 movable in the guide 7.
  • the punch 3 is moved up and down axially along a movement axis 8 by the actuation device 5, wherein the actuation device 5 may be designed, for example, as an eccentric press.
  • the actuator 5 is also attached to the bracket 2.
  • the electrical conductor with the crimping element is placed on the anvil 4. Subsequently, the punch 3 is moved by the actuating device 5 in the direction of the anvil 4.
  • the anvil 4 and / or the punch 3 have forming surfaces, which are used to form da crimping element in such a way that a mechanical and / or electrically conductive connection between the electrical conductor and the crimping element by the compression of the punch 3 on the Anvil 4 is achieved.
  • the electrical conductor may be formed, for example, as a wire, as a wire bundle, as a pin or electrical line with or without an insulating sheath.
  • the punch 3 in the upper end region on a bore 9, in which a guide element 10 of a contact element 11 is inserted.
  • the contact element 11 has a collar in an upper section, which is detected by a lower portion of the actuator 5.
  • the contact element 11 has an actuating surface 12 on the collar, which is in operative connection with the actuating device 5.
  • the contact element 11 has a collar 13, which is arranged above a contact surface 14 in the upper end region of the punch 3.
  • the collar 13 is formed in the illustrated embodiment as a closed-end sleeve.
  • the spring element 15 is arranged between a bottom surface of the sleeve and the contact surface 14, a spring element 15 is arranged.
  • the spring element 15 may be formed, for example in the form of a plate spring or a rubber ring.
  • the spring element may be designed in the form of a plurality of disk springs or rubber rings arranged in the package.
  • the plate spring may have a central opening through which a guide element of the contact element 11 is guided, as in Fig. 1 shown.
  • the punch 3 above the guide 7 on an outwardly projecting collar 16 which projects beyond a guide opening 21 of the guide 7 for the punch 3 laterally.
  • the punch 3 is moved downwardly by the actuator 5 via the introduction of a force on the abutment element 11 in the direction of the anvil 4. Since the contact element 11 is resiliently in operative connection with the punch 3, the force exerted by the actuating device 5 is transmitted to the punch 3 in a damped manner. This is especially the case when the punch 3 impinges on the crimping element 17 and the crimping element 17 is struck on the electrical conductor according to a desired shape. In this case, the crimping element 17 is deformed and fastened by means of a crimp and / or press connection to the electrical conductor.
  • a punch 3 is used with a stop element
  • a further improvement of the crimping process is achieved.
  • the stop element is represented by the collar 16, which is associated with a stop surface 18 on an upper side of the guide 7.
  • the distance between the collar 16 and the stop surface 18 is as a working stroke in Fig. 1 located.
  • Fig. 1 shows the crimping tool 1, wherein the punch 3 is in a rest position.
  • Fig. 1 it can be seen that there is a distance D1 between a sleeve-shaped edge region 19 of the collar 13 and an annular upper end surface 20 of the stamp 3.
  • the punch 3 is now moved toward the anvil 4 by means of the actuating device 5 when the crimping element 17 is hit, the punch 3 is moved downwards until the collar 16 rests on the associated abutment surface 18. Thus, the punch moves 3 to stop. Even at the stop of the punch 3 is still a distance between the anvil 4 and the punch 3 given, which allows a reliable crimping of the crimping element 17 on the electrical conductor.
  • the contact element 11 can also be moved further downwards in the direction of the anvil after reaching the stop.
  • the further movement of the contact element 11 leads to a compression of the spring element 15 without the punch 3 is moved closer to the anvil 4. This further movement is called overstroke.
  • the overstroke is smaller than the distance D1.
  • Fig. 2 shows a section of the upper end portion of the punch 3 in the position in which the punch 3 has moved to the stop and is thus in the maximum deflection position downwards in the direction of the anvil 4. If now the actuating device 5 is moved even further down, the contact element 11 is moved even further down and the spring element 15 is compressed, as in Fig. 3 is shown, wherein the punch 3 is not moved further.
  • the spring element 15 is formed in such a way that the spring element 15 receives the entire maximum deflection of the contact element 11 down in the direction of the anvil 4 after reaching the stop. This ensures that no impact of the collar 13 takes place on the end face of the punch 3.
  • Fig. 4 shows a schematic representation of a partial section of another embodiment of the crimping tool 1, in which the anvil 4 is resiliently mounted in the support plate 6 of the holder 2 via a spring element 15.
  • a resilient mounting of the crimping element 17 is achieved during the crimping process from the side of the anvil 4.
  • the resilient mounting of the punch 3 and, for example, only the anvil 4 are resiliently mounted.
  • Fig. 5 shows a further embodiment of the crimping tool 1, in which the spring element 15 is integrated in a press ram 25 of the eccentric press.
  • the contact element 11 is arranged with a lower end region in a receiving space 22 of the punch 3. Due to the arrangement of the spring element 15 in the receiving space 22, the spring element 15 is protected against environmental influences. In addition, the structural design is simplified, so that a cost reduction is achieved.
  • the contact element 11 is formed in the form of a press ram.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Electrical Connectors (AREA)

Description

Die Erfindung betrifft ein Crimpwerkzeug gemäß Anspruch 1.The invention relates to a crimping tool according to claim 1.

Im Stand der Technik sind verschiedene Ausführungsformen von Crimpwerkzeugen bekannt, die mithilfe einer Crimppresse automatisch eine Quetsch- oder Pressverbindung zwischen einem Crimpelement und einem abisolierten Leiter oder einer Isolation eines Leiters herstellen.Various embodiments of crimping tools are known in the prior art which automatically make a crimp or press fit between a crimping element and a stripped conductor or an insulation of a conductor by means of a crimping press.

Für einen sichere Crimpverbindung ist es erforderlich, dass das Crimpelement in einer definierten Weise, d.h. mit einem vorbestimmten Crimphub angeschlagen wird. Dazu sind Crimpwerkzeuge bekannt, die einen festgelegten Hub des Stempels durchführen. Unterschiedliche Leiterdurchmesser können es erforderlich machen, den Hub der Crimppresse unterschiedlich einstellen zu können. Die Einstellung kann manuell oder über eine Bedieneinheit wie z. B. in der EP 0 884 881 A1 beschrieben, durchgeführt werden.For a secure crimp connection, it is necessary that the crimping element is struck in a defined manner, ie with a predetermined crimping stroke. For this crimping tools are known, which perform a fixed stroke of the punch. Different conductor diameters may make it necessary to be able to set the stroke of the crimping press differently. The setting can be made manually or via an operating unit such. B. in the EP 0 884 881 A1 described be performed.

Aus US 3,909,900 ist ein Crimpwerkzeug bekannt, das einen Stempel und einen Amboss zum Herstellen einer Crimpverbindung zwischen einem Crimpelement und einem Leiter aufweist. Der Stempel ist bewegbar in einer Halterung geführt, wobei der Stempel mit einem Anlageelement in Wirkverbindung steht. Das Anlageelement ist vorgesehen, um von einer Betätigungseinrichtung eine Kraft aufzunehmen und den Stempel in eine Bewegung zu versetzen. Der Stempel ist über eine mechanisch feststehende Verbindung mit dem Anlageelement verbunden. Zudem ist eine Schneidvorrichtung vorgesehen, die federnd in dem Anlageelement gelagert ist. Zudem ist ein federnd gelagerter Kolben vorgesehen, der in Anlage mit der Betätigungseinrichtung gebracht werden kann.Out US 3,909,900 For example, a crimping tool is known that includes a punch and anvil for making a crimped connection between a crimping element and a conductor. The punch is movably guided in a holder, wherein the punch is in operative connection with a contact element. The abutment element is provided to receive a force from an actuator and to set the plunger in motion. The punch is connected via a mechanically fixed connection with the contact element. In addition, a cutting device is provided, which is resiliently mounted in the contact element. In addition, a spring-mounted piston is provided, which can be brought into contact with the actuating device.

Aus US 4,175,316 ist ein Crimpwerkzeug bekannt, das einen Stempel und einen Amboss zum Herstellen eines Crimpverbindung zwischen einem Crimpelement und einem Leiter aufweist, wobei der Stempel über ein Federelement mit einem Anlageelement in Wirkverbindung steht. Das Anlageelement ist vorgesehen, um von einer Betätigungseinrichtung eine Kraft aufzunehmen und den Stempel in eine Bewegung zu versetzen.Out US 4,175,316 a crimping tool is known, which has a punch and an anvil for producing a crimp connection between a crimping element and a conductor, wherein the punch is connected via a spring element with a contact element in operative connection. The abutment element is provided to receive a force from an actuator and to set the plunger in motion.

Aus US 3,918,330 ist eine Vorrichtung zum Abschneiden und Abisolieren eines isolierten Drahts vorgesehen. Das Messer zum Abisolieren des Drahts ist über eine Spiralfeder federnd mit einer Betätigungseinrichtung verbunden. Zudem ist ein Anschlag vorgesehen, der die Bewegung des beweglichen Messers auf eine vorgegebene maximale Auslenkung beschränkt.Out US 3,918,330 a device is provided for cutting and stripping an insulated wire. The knife for stripping the wire is connected via a coil spring resiliently connected to an actuating device. In addition, a stop is provided which limits the movement of the movable blade to a predetermined maximum deflection.

Die Aufgabe der Erfindung besteht darin, ein Crimpwerkzeug mit einer verbesserten Funktionsweise bereitzustellen, wobei insbesondere mit höherer Wahrscheinlichkeit eine richtige bzw. eine genau vorgegebene Crimphöhe eingestellt werden kann.The object of the invention is to provide a crimping tool with an improved mode of operation, wherein in particular with a higher probability a correct or a precisely predetermined crimp height can be set.

Die Aufgabe der Erfindung wird durch das Crimpwerkzeug gemäß Patentanspruch 1 gelöst.The object of the invention is achieved by the crimping tool according to claim 1.

Weitere vorteilhafte Ausführungsformen der Crimpwerkzeuge sind in den abhängigen Ansprüchen angegeben.Further advantageous embodiments of the crimping tools are specified in the dependent claims.

Bei der Erfindung geht es um die über einen Festanschlag vorgegebene Crimphöhe. Das federnde Element befindet sich vorzugsweise entweder im Pressenstößel oder im Stößel. Das federnde Element ermöglicht es beispielsweise einer Exzenterpresse durch einen unteren Totpunkt zu fahren, obwohl der Stößel bereits vorher auf dem Anschlag ruht. Die Federkraft ist dabei vorzugsweise größer als die erforderliche Crimpkraft.In the invention, it is about the specified via a fixed stop crimp height. The resilient element is preferably located either in the press ram or in the plunger. The springy Element makes it possible, for example, to drive an eccentric press through a bottom dead center, although the ram already rests previously on the stop. The spring force is preferably greater than the required crimping force.

In der Regel ist ein Crimpwerkzeug fest auf eine Crimphöhe eingestellt. D.h. nach einem Werkzeugwechsel müssen keine weiteren Justagen an der Crimppresse vorgenommen werden. Dies reduziert die Arbeitsvorbereitung.As a rule, a crimping tool is fixed to a crimp height. That after a tool change no further adjustments to the crimping press must be made. This reduces the work preparation.

In der erfindungsgemäßen Ausführungsform ist ein Anschlag vorgesehen, der eine maximale Auslenkung des Stempels in Richtung auf den Amboss begrenzt. Auf diese Weise wird sichergestellt, dass eine Beschädigung des Crimpelementes oder des elektrischen Leiters durch einen zu großen Hub des Stempels vermieden wird. Insbesondere durch die Kombination der federnden Lagerung des Stempels und dem Anschlag ist es möglich, eine definierte Bewegung des Stempels beim Herstellen der Crimpverbindung zu erreichenIn the embodiment according to the invention, a stop is provided which limits a maximum deflection of the punch in the direction of the anvil. In this way it is ensured that damage to the crimping element or the electrical conductor is avoided by a too large stroke of the punch. In particular, by the combination of the resilient mounting of the punch and the stop, it is possible to achieve a defined movement of the punch in the manufacture of the crimped connection

In einer weiteren Ausführungsform ist eine Betätigungseinrichtung vorgesehen, die über das Anlageelement den Stempel bewegt, wobei ein Hub der Betätigungseinrichtung in der Weise ausgebildet ist, dass der Stempel bei der Betätigung des Anlageelementes in Anlage an den Anschlag bewegt wird. Dazu ist der Hub der Betätigungseinrichtung größer ausgebildet als der Hub des Stempels bis zum Anschlag. Auf diese Weise wird sichergestellt, dass der Stempel bei jedem Crimpvorgang in Anlage an den Anschlag gelangt. Dadurch wird eine sichere und zuverlässige Verquetschung des Crimpelementes über den gesamten zur Verfügung stehenden Quetschbereich, d. h. bis zum Anschlag ermöglicht. Aufgrund der federnden Lagerung des Stempels sind die Kräfte, die auf den Anschlag wirken, reduziert. Zudem ist auch die Belastung der Betätigungseinrichtung beim Bewegen des Stempels auf den Anschlag aufgrund der federnden Lagerung des Stempels reduziert.In a further embodiment, an actuating device is provided which moves the punch via the contact element, wherein a stroke of the actuating device is formed in such a way that the punch is moved during the actuation of the contact element in abutment with the stop. For this purpose, the stroke of the actuator is formed larger than the stroke of the punch to the stop. This ensures that the punch comes into contact with the stop during each crimping process. As a result, a secure and reliable crimping of the crimping element over the entire available squish area, ie allows to stop. Due to the resilient mounting of the punch, the forces acting on the stop are reduced. In addition, the burden of the actuator when moving the punch is reduced to the stop due to the resilient mounting of the punch.

In einer weiteren Ausführungsform ist das Federelement in Form einer Tellerfeder ausgebildet. Tellerfedern eignen sich besonders für die benötigte federnde Lagerung des Stempels und/oder des Amboss.In a further embodiment, the spring element is designed in the form of a plate spring. Disc springs are particularly suitable for the required resilient mounting of the punch and / or the anvil.

In einer weiteren Ausführungsform weist das Anlageelement ein Führungselement auf, das in einer Bohrung des Stempels beweglich geführt ist. Das Federelement ist zwischen einer Anlagefläche des Stempels und einer Anlagefläche des Führungselementes angeordnet. Auf diese Weise wird ein einfacher Aufbau des Crimpwerkzeuges bei einer zuverlässigen federnden Lagerung des Stempels ermöglicht.In a further embodiment, the abutment element has a guide element which is movably guided in a bore of the stamp. The spring element is arranged between a contact surface of the punch and a contact surface of the guide element. In this way, a simple construction of the crimping tool is made possible with a reliable resilient mounting of the stamp.

In einer weiteren Ausführungsform weist der Stempel einen Bund auf, der zur Anlage des Federelementes dient. Die Ausbildung eines Bundes stellt eine weitere kostengünstige Ausführungsform dar, mit der eine federnde Lagerung des Stempels erreicht werden kann.In a further embodiment, the punch has a collar which serves to bear the spring element. The formation of a federal government is another cost-effective embodiment, with which a resilient mounting of the punch can be achieved.

In einer weiteren Ausführungsform ist das Federelement zwischen einer Endfläche des Führungselementes und einer Anlagefläche des Stempels angeordnet. Auf diese Weise ist eine Lagerung des Federelementes möglich, bei der das Felderelement gegen Umwelteinflüsse geschützt ist. Insbesondere wird eine Verschmutzung oder eine Beeinträchtigung der Funktionsweise der federnden Lagerung durch Fremdteile vermieden.In a further embodiment, the spring element is arranged between an end face of the guide element and a contact surface of the punch. In this way, a storage of the spring element is possible, in which the field element is protected against environmental influences. In particular, a contamination or impairment of the operation of the resilient mounting is avoided by foreign parts.

Die Erfindung wird im Folgenden anhand der Figuren näher erläutert.The invention will be explained in more detail below with reference to FIGS.

Es zeigen:

  • Fig. 1 eine schematische Darstellung des Crimpwerkzeuges,
  • Fig. 2 einen Arbeitshub des Crimpwerkzeuges,
  • Fig. 3 einen Überhub des Crimpwerkzeuges, und
  • Fig. 4 einen Ausschnitt einer weiteren Ausführungsform eines Crimpwerkzeuges.
Show it:
  • Fig. 1 a schematic representation of the crimping tool,
  • Fig. 2 a working stroke of the crimping tool,
  • Fig. 3 an overstroke of the crimping tool, and
  • Fig. 4 a section of another embodiment of a crimping tool.

Fig. 1 zeigt in einer schematischen Darstellung ein Crimpwerkzeug 1, das im Wesentlichen eine Halterung 2, einen Stempel 3, einen Amboss 4 und eine Betätigungseinrichtung 5 zum Bewegen des Stempels 3 aufweist. Der Amboss 4 ist an einer Auflageplatte 6 der Halterung 2 befestigt. Der Stempel 3 ist oberhalb des Ambosses 4 in einer Führung 7 der Halterung 2 in einer axialen Richtung entlang einer Bewegungsachse 8 beweglich in der Führung 7 gehaltert. Der Stempel 3 wird bei einem Crimpvorgang von der Betätigungseinrichtung 5 axial entlang einer Bewegungsachse 8 auf- und abbewegt, wobei die Betätigungseinrichtung 5 beispielsweise als Exzenterpresse ausgebildet sein kann. Die Betätigungseinrichtung 5 ist ebenfalls an der Halterung 2 befestigt. Fig. 1 shows a schematic representation of a crimping tool 1, which essentially comprises a holder 2, a punch 3, an anvil 4 and an actuating device 5 for moving the punch 3. The anvil 4 is attached to a support plate 6 of the holder 2. The punch 3 is mounted above the anvil 4 in a guide 7 of the holder 2 in an axial direction along a movement axis 8 movable in the guide 7. During a crimping operation, the punch 3 is moved up and down axially along a movement axis 8 by the actuation device 5, wherein the actuation device 5 may be designed, for example, as an eccentric press. The actuator 5 is also attached to the bracket 2.

Zum Anschlagen eines Crimpelementes an einem elektrischen Leiter wird der elektrische Leiter mit dem Crimpelement auf den Amboss 4 aufgelegt. Anschließend wird der Stempel 3 durch die Betätigungseinrichtung 5 in Richtung auf den Amboss 4 bewegt. Der Amboss 4 und/oder der Stempel 3 weisen Umformflächen auf, die dazu verwendet werden, um da Crimpelement in der Weise umzuformen, dass eine mechanischen und/oder elektrisch leitende Verbindung zwischen dem elektrischen Leiter und dem Crimpelement durch das Zusammenpressen des Stempels 3 auf dem Amboss 4 erreicht wird. Der elektrische Leiter kann beispielsweise als Draht, als Drahtbündel, als Stift oder elektrische Leitung mit oder ohne isolierende Ummantelung ausgebildet sein.For striking a crimping element on an electrical conductor, the electrical conductor with the crimping element is placed on the anvil 4. Subsequently, the punch 3 is moved by the actuating device 5 in the direction of the anvil 4. The anvil 4 and / or the punch 3 have forming surfaces, which are used to form da crimping element in such a way that a mechanical and / or electrically conductive connection between the electrical conductor and the crimping element by the compression of the punch 3 on the Anvil 4 is achieved. The electrical conductor may be formed, for example, as a wire, as a wire bundle, as a pin or electrical line with or without an insulating sheath.

In der dargestellten Ausführungsform weist der Stempel 3 im oberen Endbereich eine Bohrung 9 auf, in die ein Führungselement 10 eines Anlageelementes 11 eingeschoben ist. Das Anlageelement 11 weist in einem oberen Abschnitt einen Bund auf, der von einem unteren Bereich der Betätigungseinrichtung 5 erfasst ist. Das Anlageelement 11 weist am Bund eine Betätigungsfläche 12 auf, die in Wirkverbindung mit der Betätigungseinrichtung 5 steht. Weiterhin weist das Anlageelement 11 einen Bund 13 auf, der oberhalb einer Anlagefläche 14 im oberen Endbereich des Stempels 3 angeordnet ist. Der Bund 13 ist in der dargestellten Ausführungsform als einseitig geschlossene Hülse ausgebildet. Zwischen einer Bodenfläche der Hülse und der Anlagefläche 14 ist ein Federelement 15 angeordnet. Das Federelement 15 kann beispielsweise in Form einer Tellerfeder oder eines Gummiringes ausgebildet sein. Weiterhin kann das Federelement in Form von mehreren im Paket angeordneten Tellerfedern oder Gummiringen ausgebildet sein.In the illustrated embodiment, the punch 3 in the upper end region on a bore 9, in which a guide element 10 of a contact element 11 is inserted. The contact element 11 has a collar in an upper section, which is detected by a lower portion of the actuator 5. The contact element 11 has an actuating surface 12 on the collar, which is in operative connection with the actuating device 5. Furthermore, the contact element 11 has a collar 13, which is arranged above a contact surface 14 in the upper end region of the punch 3. The collar 13 is formed in the illustrated embodiment as a closed-end sleeve. Between a bottom surface of the sleeve and the contact surface 14, a spring element 15 is arranged. The spring element 15 may be formed, for example in the form of a plate spring or a rubber ring. Furthermore, the spring element may be designed in the form of a plurality of disk springs or rubber rings arranged in the package.

Die Tellerfeder kann eine mittige Öffnung aufweisen, durch die ein Führungselement des Anlageelementes 11 geführt ist, wie in Fig. 1 dargestellt.The plate spring may have a central opening through which a guide element of the contact element 11 is guided, as in Fig. 1 shown.

Weiterhin weist der Stempel 3 oberhalb der Führung 7 einen nach außen ragenden Kragen 16 auf, der über eine Führungsöffnung 21 der Führung 7 für den Stempel 3 seitlich hinaus ragt. Bei einem Crimpvorgang wird der Stempel 3 durch die Betätigungseinrichtung 5 über die Einleitung einer Kraft auf das Anlageelement 11 nach unten in Richtung auf den Amboss 4 bewegt. Da das Anlageelement 11 federnd mit dem Stempel 3 in Wirkverbindung steht, wird die von der Betätigungseinrichtung 5 ausgeübte Kraft gedämpft auf den Stempel 3 übertragen. Dies ist insbesondere der Fall, wenn der Stempel 3 auf das Crimpelement 17 auftrifft und das Crimpelement 17 entsprechend einer gewünschten Form am elektrischen Leiter angeschlagen wird. Dabei wird das Crimpelement 17 verformt und mithilfe einer Quetsch- und/oder Pressverbindung am elektrischen Leiter befestigt.Furthermore, the punch 3 above the guide 7 on an outwardly projecting collar 16 which projects beyond a guide opening 21 of the guide 7 for the punch 3 laterally. In a crimping operation, the punch 3 is moved downwardly by the actuator 5 via the introduction of a force on the abutment element 11 in the direction of the anvil 4. Since the contact element 11 is resiliently in operative connection with the punch 3, the force exerted by the actuating device 5 is transmitted to the punch 3 in a damped manner. This is especially the case when the punch 3 impinges on the crimping element 17 and the crimping element 17 is struck on the electrical conductor according to a desired shape. In this case, the crimping element 17 is deformed and fastened by means of a crimp and / or press connection to the electrical conductor.

Wird nun in einer Ausführungsform ein Stempel 3 mit einem Anschlagelement verwendet, wird eine weitere Verbesserung des Crimpvorganges erreicht. In dem dargestellten Ausführungsbeispiel der Fig. 1 ist das Anschlagelement durch den Kragen 16 dargestellt, der einer Anschlagfläche 18 auf einer Oberseite der Führung 7 zugeordnet ist. Der Abstand zwischen dem Kragen 16 und der Anschlagfläche 18 ist als Arbeitshub in Fig. 1 eingezeichnet. Fig. 1 zeigt das Crimpwerkzeug 1, wobei sich der Stempel 3 in einer Ruheposition befindet. Weiterhin ist in Fig. 1 ersichtlich, dass zwischen einem hülsenförmigen Randbereich 19 des Bundes 13 und einer ringförmigen oberen Endfläche 20 des Stempels 3 ein Abstand D1 vorliegt.If, in one embodiment, a punch 3 is used with a stop element, a further improvement of the crimping process is achieved. In the illustrated embodiment of the Fig. 1 the stop element is represented by the collar 16, which is associated with a stop surface 18 on an upper side of the guide 7. The distance between the collar 16 and the stop surface 18 is as a working stroke in Fig. 1 located. Fig. 1 shows the crimping tool 1, wherein the punch 3 is in a rest position. Furthermore, in Fig. 1 it can be seen that there is a distance D1 between a sleeve-shaped edge region 19 of the collar 13 and an annular upper end surface 20 of the stamp 3.

Wird nun beim Anschlagen des Crimpelementes 17 der Stempel 3 mithilfe der Betätigungseinrichtung 5 auf den Amboss 4 zu bewegt, so wird der Stempel 3 so lange nach unten bewegt, bis der Kragen 16 auf der zugeordneten Anschlagfläche 18 aufliegt. Somit fährt der Stempel 3 auf Anschlag. Auch im Anschlag des Stempels 3 ist noch ein Abstand zwischen dem Amboss 4 und dem Stempel 3 gegeben, der einen zuverlässigen Crimpvorgang des Crimpelementes 17 am elektrischen Leiter ermöglicht.If the punch 3 is now moved toward the anvil 4 by means of the actuating device 5 when the crimping element 17 is hit, the punch 3 is moved downwards until the collar 16 rests on the associated abutment surface 18. Thus, the punch moves 3 to stop. Even at the stop of the punch 3 is still a distance between the anvil 4 and the punch 3 given, which allows a reliable crimping of the crimping element 17 on the electrical conductor.

Abhängig von der gewählten Ausführungsform der Betätigungseinrichtung 5 kann beispielsweise bei der Verwendung einer Exzenterpresse als Betätigungseinrichtung 5 das Anlageelement 11 auch nach Erreichen des Anschlages weiter nach unten in Richtung Amboss bewegt werden. Die Weiterbewegung des Anlageelementes 11 führt zu einem Zusammendrücken des Federelementes 15, ohne dass der Stempel 3 näher an den Amboss 4 bewegt wird. Diese Weiterbewegung wird als Überhub bezeichnet. Der Überhub ist kleiner als der Abstand D1.Depending on the selected embodiment of the actuating device 5, for example when using an eccentric press as the actuating device 5, the contact element 11 can also be moved further downwards in the direction of the anvil after reaching the stop. The further movement of the contact element 11 leads to a compression of the spring element 15 without the punch 3 is moved closer to the anvil 4. This further movement is called overstroke. The overstroke is smaller than the distance D1.

Fig. 2 zeigt einen Ausschnitt des oberen Endbereiches des Stempels 3 in der Position, in der der Stempel 3 auf den Anschlag gefahren ist und sich somit in der maximalen Auslenkposition nach unten in Richtung auf den Amboss 4 befindet. Wird nun die Betätigungseinrichtung 5 noch weiter nach unten bewegt, so wird das Anlageelement 11 noch weiter nach unten verschoben und das Federelement 15 zusammengedrückt, wie in Fig. 3 dargestellt ist, wobei der Stempel 3 nicht weiter bewegt wird. Vorzugsweise ist das Federelement 15 in der Weise ausgebildet, dass das Federelement 15 die gesamte maximale Auslenkung des Anlageelementes 11 nach unten in Richtung auf den Amboss 4 nach Erreichen des Anschlages aufnimmt. Somit ist sichergestellt, dass kein Aufschlagen des Bundes 13 auf der Endfläche des Stempels 3 erfolgt. Fig. 2 shows a section of the upper end portion of the punch 3 in the position in which the punch 3 has moved to the stop and is thus in the maximum deflection position downwards in the direction of the anvil 4. If now the actuating device 5 is moved even further down, the contact element 11 is moved even further down and the spring element 15 is compressed, as in Fig. 3 is shown, wherein the punch 3 is not moved further. Preferably, the spring element 15 is formed in such a way that the spring element 15 receives the entire maximum deflection of the contact element 11 down in the direction of the anvil 4 after reaching the stop. This ensures that no impact of the collar 13 takes place on the end face of the punch 3.

Nach der in Fig. 3 dargestellten Überhubposition wird die Betätigungseinrichtung 5 wieder nach oben bewegt, so dass auch der Stempel 3 wieder nach oben geführt wird.After the in Fig. 3 shown overstroke position, the actuator 5 is moved back up, so that the punch 3 is again guided upwards.

Fig. 4 zeigt in einer schematischen Darstellung einen Teilausschnitt einer weiteren Ausführungsform des Crimpwerkzeuges 1, bei dem der Amboss 4 über ein Federelement 15 federnd in der Auflageplatte 6 der Halterung 2 gelagert wird. Somit wird auch von Seiten des Ambosses 4 eine federnde Lagerung des Crimpelementes 17 beim Crimpvorgang erreicht. Abhängig von der gewählten Ausführungsform kann auf die federnde Lagerung des Stempels 3 verzichtet werden und beispielsweise nur der Amboss 4 federnd gelagert sein. Fig. 4 shows a schematic representation of a partial section of another embodiment of the crimping tool 1, in which the anvil 4 is resiliently mounted in the support plate 6 of the holder 2 via a spring element 15. Thus, a resilient mounting of the crimping element 17 is achieved during the crimping process from the side of the anvil 4. Depending on the selected embodiment can be dispensed with the resilient mounting of the punch 3 and, for example, only the anvil 4 are resiliently mounted.

Fig. 5 zeigt eine weitere Ausführungsform des Crimpwerkzeuges 1, bei dem das Federelement 15 in einen Pressenstößel 25 der Excenterpresse integriert ist. Das Anlageelement 11 ist mit einem unteren Endbereich in einem Aufnahmeraum 22 des Stempels 3 angeordnet. Durch die Anordnung des Federelementes 15 im Aufnahmeraum 22 ist das Federelement 15 gegenüber Umwelteinflüssen geschützt. Zudem ist der konstruktive Aufbau vereinfacht, so dass eine Kostenreduzierung erreicht wird. In dem dargestellten Ausführungsbeispiel ist das Anlageelement 11 in Form eines Pressstößels ausgebildet. Fig. 5 shows a further embodiment of the crimping tool 1, in which the spring element 15 is integrated in a press ram 25 of the eccentric press. The contact element 11 is arranged with a lower end region in a receiving space 22 of the punch 3. Due to the arrangement of the spring element 15 in the receiving space 22, the spring element 15 is protected against environmental influences. In addition, the structural design is simplified, so that a cost reduction is achieved. In the illustrated embodiment, the contact element 11 is formed in the form of a press ram.

Abhängig von der gewählten Ausführungsform können weitere Zwischenelemente, wie dargestellt, vorgesehen sein, um das Anlageelement mit dem Stempel 3 zu verbinden.Depending on the chosen embodiment, further intermediate elements, as shown, may be provided to connect the abutment element with the punch 3.

Claims (8)

  1. Crimping tool (1) having a punch (3) and an anvil (4) for producing a crimped connection between a crimping element (17) and a conductor, wherein the punch (3) is guided in a movable manner in a holder (2), wherein the punch (3) is operatively connected to an abutment element (11), wherein the abutment element (11) is provided to absorb a force from an actuating device (5) and to set the punch (3) into motion, wherein
    the punch (3) and the abutment element (11) are operatively connected via a spring element (15), characterized in that a stop (16, 18) is provided, which limits a maximum deflection of the punch (3) in the direction of the anvil (4).
  2. Crimping tool according to Claim 1, wherein an actuating travel of the actuating device (5) is configured in such a way that the punch (3) is moved into abutment against the stop (16, 18) upon actuation of the abutment element (11).
  3. Crimping tool according to either of Claims 1 and 2, wherein the spring element (15) is configured in the form of disc springs.
  4. Crimping tool according to one of Claims 1 to 3, wherein the abutment element (11) has a guide element (10), wherein the guide element (10) is guided in a movable manner in a bore (9) in the punch (3), and wherein the spring element (15) is arranged between an abutment face of the punch (3) and an abutment face of the guide element (10).
  5. Crimping tool according to Claim 4, wherein the spring element (15) is mounted on the guide element (10) in a movable manner, wherein the guide element (10) has a lateral flange (13), wherein the spring element (15) is arranged between the flange (13) and an abutment face (14) of the punch (3).
  6. Crimping tool according to Claim 4, wherein the spring element is arranged between an abutment face (14) of the punch (3) and an end face (26) of the guide element (10).
  7. Crimping tool according to one of Claims 1 to 6, wherein the spring element (15) is configured in such a way that the spring element (15) takes up any travel of the abutment element beyond the stop of the punch.
  8. Crimping tool according to one of Claims 1 to 7, characterized in that the anvil (4) and the holder (2) are operatively connected via a spring element (15).
EP12155751.6A 2011-02-21 2012-02-16 Crimping tool Not-in-force EP2490306B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011004473A DE102011004473A1 (en) 2011-02-21 2011-02-21 Crimp Tool

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EP2490306A2 EP2490306A2 (en) 2012-08-22
EP2490306A3 EP2490306A3 (en) 2014-01-01
EP2490306B1 true EP2490306B1 (en) 2018-05-16

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EP12155751.6A Not-in-force EP2490306B1 (en) 2011-02-21 2012-02-16 Crimping tool

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EP (1) EP2490306B1 (en)
DE (1) DE102011004473A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109449714B (en) * 2018-10-23 2020-10-20 国网江苏省电力工程咨询有限公司 Quick connector for wire wiring process
CN109301663B (en) * 2018-10-23 2020-10-16 金寨智行知识产权运营有限公司 Electric wire wiring equipment

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Publication number Priority date Publication date Assignee Title
NL156547B (en) * 1968-08-29 1978-04-17 Amp Inc DEVICE FOR STRIPPING THE INSULATION OF AN END PART OF AN INSULATED WIRE AND CRIMPING AN ELECTRICAL PIPE ORGAN AT THE BARE END PART.
US3909900A (en) * 1974-05-22 1975-10-07 Artos Engineering Co Apparatus for producing electrical conductors
US3918330A (en) * 1974-11-18 1975-11-11 Artos Engineering Co Insulated wire cutting and stripping apparatus
US4175316A (en) * 1978-06-05 1979-11-27 Artos Engineering Company Wire lead clamping mechanism for wire lead production apparatus
CH670730A5 (en) * 1986-05-31 1989-06-30 Klaussner Hans Jurgen
SE505162C2 (en) * 1995-03-22 1997-07-07 Pressmaster Tool Ab Tool head
FR2764098B1 (en) 1997-05-27 1999-08-20 Peugeot METHOD AND DEVICE FOR CONTROLLING ACCESS TO A DATA FIELD TO BE TRANSMITTED ON AN INFORMATION TRANSMISSION NETWORK
EP0884811B1 (en) * 1997-06-12 2003-01-22 komax Holding AG Method and machine for making crimp connections
JP3331174B2 (en) * 1998-07-07 2002-10-07 タイコエレクトロニクスアンプ株式会社 Wire crimping device
EP1143579A1 (en) * 2000-04-04 2001-10-10 Pawo Systems A.G. Contact working station
DE10302330A1 (en) * 2002-01-21 2003-07-24 Grote & Hartmann Crimping device for flat foil conductors has centering device for contact element operated by drive coupled to upper crimping head
EP1351349B1 (en) * 2002-03-18 2005-01-05 Komax Holding Ag Crimping press for making crimp connections

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Publication number Publication date
EP2490306A2 (en) 2012-08-22
EP2490306A3 (en) 2014-01-01
DE102011004473A1 (en) 2012-08-23

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