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EP1634352A1 - Crimping pliers - Google Patents

Crimping pliers

Info

Publication number
EP1634352A1
EP1634352A1 EP04790977A EP04790977A EP1634352A1 EP 1634352 A1 EP1634352 A1 EP 1634352A1 EP 04790977 A EP04790977 A EP 04790977A EP 04790977 A EP04790977 A EP 04790977A EP 1634352 A1 EP1634352 A1 EP 1634352A1
Authority
EP
European Patent Office
Prior art keywords
crimping tool
motor
support column
crimping
signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP04790977A
Other languages
German (de)
French (fr)
Other versions
EP1634352B1 (en
Inventor
Uwe Mühlhauser
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.)
Bernhard Schaefer Werkzeug und Sondermaschinen GmbH
Original Assignee
Bernhard Schaefer Werkzeug und Sondermaschinen GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bernhard Schaefer Werkzeug und Sondermaschinen GmbH filed Critical Bernhard Schaefer Werkzeug und Sondermaschinen GmbH
Priority to PL04790977T priority Critical patent/PL1634352T3/en
Publication of EP1634352A1 publication Critical patent/EP1634352A1/en
Application granted granted Critical
Publication of EP1634352B1 publication Critical patent/EP1634352B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/10—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting fittings into hoses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
    • B21D39/046—Connecting tubes to tube-like fittings
    • 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
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
    • B25B27/146—Clip clamping hand tools
    • 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
    • H01R43/042—Hand tools for crimping
    • H01R43/0428—Power-driven hand crimping tools
    • 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
    • H01R43/0486—Crimping apparatus or processes with force measuring means

Definitions

  • the invention relates to a motor-driven crimping tool comprising a support column on which two crimping tools are mounted, one of which is fixed and the other in a guide of the support column is displaceable, a signal-actuated motor with a motor housing which is rigidly secured to the support column and an actuator encloses that is connected to the displaceable crimping tool and a controller for operating the motor.
  • Such a crimping tool is known. It is used in the connection of electrically conductive cables of a diameter of several millimeters and is operated by a pressurized with compressed air piston / cylinder unit. This has a comparatively large effective diameter in order to generate the forces required for a crimping process using the working pressures of 6 or 12 bar available in conventional compressed air networks. Accordingly, the crimping tool is cumbersome to use and, in particular, less suitable for use in difficult to access places. Presentation of the invention
  • the invention has for its object to further develop a crimping tool of the type mentioned that results in a reduced size. This object is achieved with a crimping tool of the type mentioned above with the characterizing features of claim 1.
  • the dependent claims relate.
  • the motor is an electric motor with a rotor rotating about an axis, which is provided on the support column, at least one crimping tool and / or the actuator a deformation sensor, the / the resulting during the crimping, mechanical deformation the support column, the crimping tool and / or the actuator is suitable and transforms the deformation into a signal that corresponds to the size of the deformation proportional and that the deformation sensor is signal conductively connected to the control of the motor and a return of the displaceable crimping tool to its original position causes the occurrence of a signal that reaches or exceeds an arbitrarily settable value.
  • the invention is based on the recognition that electric motors with a rotor rotating about an axis are distinguished by an excellent robustness and accordingly have a long service life.
  • the conversion of the fast rotational movement in a slow forward movement of the displaceable crimping tool of a crimping tool always requires the use of a transmission with an extremely high transmission ratio and a correspondingly large switch-off inertia.
  • the size of the crimping tool according to the invention is significantly reduced compared to the known design. As a result, it can easily be used in tight places, for example at assembly sites located inside motor vehicles.
  • Threaded nut co-operating threaded rod is arranged, which together the rotational movement of the rotor in a transverse motion the mother and the associated, movable crimping tool convict.
  • a transmission housing is provided between the electric motor and the displaceable crimping tool, in which the threaded rod axially immovable and rotatable and the threaded nut is axially displaceable and non-rotatably received.
  • the threaded rod is expediently supported on at least one ball bearing. As a result, it is particularly easy to rotate and accordingly requires only low drive forces. The engine can be reduced accordingly in terms of its size.
  • the gear housing and the motor housing are expediently arranged next to each other, wherein the threaded rod and the rotor of the electric motor are connected by a belt drive.
  • the deformation sensor on the support column it has proven to be advantageous if it is positioned between the fixed crimping tool and the attachment point of the motor housing.
  • the attachment to the support column can be carried out in an elongated design by means of spaced in the direction of the force introduction direction machine screws. Any elastic deformations of the support column are transmitted directly to the sensor and converted into a signal that is proportional to the size of the deformation. It can therefore be evaluated and used to control the motor to obtain error-free crimping and avoid damage caused by overload. Since the signal is the engine in the controls design according to the invention bypassing the gear reduction directly, the achievement of both objectives is guaranteed in an excellent degree.
  • the deformation sensor is formed by an electrical tension and / or pressure sensor.
  • the resulting during the intended use deformations can be characterized excellent and capture directly.
  • FIG. 1 shows an exemplary embodiment of the crimping tool according to the invention in longitudinal section
  • FIG. 2 shows the crimping tool according to FIG. 1 in a cross-sectional representation along the plane A-A
  • a motor-driven crimping tool is shown in longitudinal or cross-sectional view, comprising a support column 1, on which two crimping tools 2, 3 are mounted, one of which 2 fixed and the other 3 in a guide 4 of Supporting column 1 is displaceable, a signal-actuated motor 5 with a motor housing 6 which is rigidly attached to the support column 1 and an actuator 7 surrounds that is connected to the displaceable crimping tool 3 and a controller for actuating the motor 5.
  • the motor 5 consists of an electric motor with a rotor rotating about an axis. This is connected by a belt drive 12 with an actuator 7 that is formed by a threaded spindle is supported by ball bearings 11 on the gear housing 9.
  • the gear housing 9 comprises in the lower part of a guide of hexagonal profile, as seen in Figure 2.
  • the actuator 7.1 is mounted, which is designed in the manner of a threaded nut and at the bottom of the drawing, the displaceable crimping tool 3 carries.
  • the displaceable crimping tool 3 opposite lying at the lower end of the support column 1 is a festgelagertes, further crimping tool 2 is provided.
  • Deformation sensors 8 may be exclusively, alternatively or cumulatively provided on the support column 1, at least one crimping tool 2, 3 and / or the actuator 7, 7.1. In most cases, the use of a single sensor is sufficient. This can be attached particularly advantageous to the support column 1 and replace easily in case of damage.
  • the control needed to operate the illustrated crimping tool is not shown in the drawing. It is generally integrated into the motor housing 6 and is protected at this point to a particularly good extent from mechanical damage.
  • a key switch is generally provided. This causes via the not shown in the drawings control a rotation of the rotor contained in the electric motor.
  • the rotation is transmitted through the belt drive 12 to the trained as a threaded spindle actuator 7, which is in engagement with the internal thread of the designed like a threaded nut actuator 7.1.
  • This is by a hexagonal guide of the gear housing. 9 prevented from following the rotational movement of the actuator 7, while the latter is supported on ball bearings 11 in the axial direction on both sides in the gear housing 9 and thereby prevented from an axially directed evasive movement.
  • the rotational movement of the actuator 7 causes as a result thereof a downward Relatiwerlagerung of the actuator 7.1, which is transmitted directly fixed on its face, displaceable crimping tool 3.
  • the displaceable crimping tool 3 is thereby displaced in the direction of the stationary crimping tool 2. This results in the possibility that the relatively displaceable and the rigidly fixed crimping tool meet directly, with the result that an elastic deformation of the support column 1 results. This is detected by at least one of the sensors 8 and converted into a signal that corresponds to the size of the deformation proportionally.
  • the control which is not reproduced in the drawing, causes a reversal of the motor in the opposite direction of rotation and thus an immediate return of the movable crimping tool to its starting position. A plastic deformation or even damage to the crimping tool is thereby reliably avoided.
  • the actuation of the pressure switch triggers a downward relative bearing of the displaceable crimping tool, which, however, causes the implementation of a crimping process.
  • the wire ends to be connected are jointly enclosed by a crimp, which normally consists of metallic material and is plastically deformed such that the two wire ends are subsequently connected inseparably by the crimp.
  • the necessary forces are considerable. They will be like that increased long, until a sufficient, plastic deformation of the crimp has occurred.
  • the value in this regard differs depending on the size of the crimp and can be determined very easily in the experiment. If it is reached, then at least one of the sensors 8 triggers a reversal of the motor 5 and a return of the displaceable crimping tool to its original position. Thus, the required, firm connection of the two wire or cable ends is achieved at each nachnachneden crimping, without causing damage to the crimping tool. Also, use in the connection of other, columnar body is possible.
  • the crimping tool according to the invention is characterized by an extremely high robustness and good manageability.
  • the electrical energy required for operation can easily be supplied using thin, flexible cables.
  • a use of difficult-to-reach places of use is nothing contrary.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Materials For Medical Uses (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Dowels (AREA)

Abstract

Disclosed are powered crimping pliers comprising a support column (1) on which two crimping tools (2, 3) are mounted, one crimping tool (2) being stationary and the other one (3) being movable within a guide (4) of the support column (1), a signal-actuated motor (5) with a motor housing (6) that is rigidly fixed to the support column (1) and encloses an actuator (7), said actuator (7) being joined to the movable crimping tool (3), and a control mechanism for actuating the motor (5). The motor (5) is embodied as an electric motor which is provided with a rotor that rotates about an axis. A deformation sensor (8) is provided on the support column (1), at least one crimping tool (2, 3), and/or the actuator (7, 7.1) for detecting the mechanical deformation generated during the crimping process and converting the same into a signal that is proportionate to the extent of the deformation. Said deformation sensor (8) is connected in a signal-conducting manner to the control mechanism of the motor (5) and causes the movable crimping tool (3) to be returned to the initial position thereof when a signal occurs that reaches or exceeds a randomly adjustable value.

Description

Crimpzange Crimping Tool
Beschreibung Technisches GebietDescription Technical area
Die Erfindung betrifft eine motorisch angetriebene Crimpzange, umfassend eine Tragsäule, auf der zwei Crimpwerkzeuge gelagert sind, von denen das eine fest und das andere in einer Führung der Tragsäule verschiebbar ist, einen signalbetätigbaren Motor mit einem Motorgehäuse, das starr an der Tragsäule befestigt ist und ein Stellglied umschließt, dass mit dem verschiebbaren Crimpwerkzeug verbunden ist sowie eine Steuerung zur Betätigung des Motors.The invention relates to a motor-driven crimping tool comprising a support column on which two crimping tools are mounted, one of which is fixed and the other in a guide of the support column is displaceable, a signal-actuated motor with a motor housing which is rigidly secured to the support column and an actuator encloses that is connected to the displaceable crimping tool and a controller for operating the motor.
Stand der TechnikState of the art
Eine solche Crimpzange ist bekannt. Sie gelangt bei der Verbindung elektrisch leitender Kabel eines Durchmessers von mehreren Millimetern zur Anwendung und wird durch eine mit Druckluft beaufschlagte Kolben/Zylindereinheit betätigt. Diese hat einen vergleichsweise großen Wirkdurchmesser, um unter Verwendung der in üblichen Druckluftnetzen verfügbaren Arbeitsdrücke von 6 bzw. 12 bar die für einen Crimpprozess benötigten Kräfte zu erzeugen. Die Crimpzange ist dementsprechend unhandlich im Gebrauch und insbesondere wenig geeignet, an schwierig zugänglichen Orten Verwendung zu finden. Darstellung der ErfindungSuch a crimping tool is known. It is used in the connection of electrically conductive cables of a diameter of several millimeters and is operated by a pressurized with compressed air piston / cylinder unit. This has a comparatively large effective diameter in order to generate the forces required for a crimping process using the working pressures of 6 or 12 bar available in conventional compressed air networks. Accordingly, the crimping tool is cumbersome to use and, in particular, less suitable for use in difficult to access places. Presentation of the invention
Der Erfindung liegt die Aufgabe zugrunde, eine Crimpzange der eingangs genannten Art derart weiter zu entwickeln, dass sich eine verminderte Baugröße ergibt. Diese Aufgabe wird erfindungsgemäß bei einer Crimpzange der eingangs genannten Art mit den kennzeichnenden Merkmalen von Anspruch 1 gelöst. Auf vorteilhafte Ausgestaltungen nehmen die Unteransprüche Bezug.The invention has for its object to further develop a crimping tool of the type mentioned that results in a reduced size. This object is achieved with a crimping tool of the type mentioned above with the characterizing features of claim 1. In advantageous embodiments, the dependent claims relate.
Bei der erfindungsgemäßen Crimpzange ist es vorgesehen, dass der Motor ein Elektromotor mit einem um eine Achse rotierenden Läufer ist, das an der Tragsäule, zumindest einem Crimpwerkzeug und/oder dem Stellglied ein Verformungssensor vorgesehen ist, der/die sich beim Crimpvorgang ergebende, mechanische Verformung der Tragsäule, des Crimpwerkzeuges und/oder des Stellgliedes zu erfassen geeignet ist und die Verformung in ein Signal umformt, das der Größe der Verformung proportional entspricht und dass der Verformungssensor mit der Steuerung des Motors signalleitend verbunden ist und eine Rückführung des verschiebbaren Crimpwerkzeugs in seine Ausgangslage bewirkt beim Auftreten eines Signals, das einen willkürlich einstellbaren Wert erreicht oder überschreitet.In the case of the crimping tool according to the invention, it is provided that the motor is an electric motor with a rotor rotating about an axis, which is provided on the support column, at least one crimping tool and / or the actuator a deformation sensor, the / the resulting during the crimping, mechanical deformation the support column, the crimping tool and / or the actuator is suitable and transforms the deformation into a signal that corresponds to the size of the deformation proportional and that the deformation sensor is signal conductively connected to the control of the motor and a return of the displaceable crimping tool to its original position causes the occurrence of a signal that reaches or exceeds an arbitrarily settable value.
Bei dieser Ausbildung geht die Erfindung von der Erkenntnis aus, dass Elektromotoren mit einem um eine Achse rotierenden Läufer sich durch eine ausgezeichnete Robustheit auszeichnen und eine dementsprechend große Langlebigkeit haben. Die Umwandlung der schnellen Rotationsbewegung in eine langsame Vorwärtsbewegung des verschiebbaren Crimpwerkzeuges einer Crimpzange bedingt jedoch stets die Verwendung eines Getriebes mit einem extrem hohen Übersetzungsverhältnis und einer entsprechend großen Abschaltträgheit. Diese Bedingungen sind auch bei der erfindungsgemäßen Crimpzange erfüllt. Gleichwohl können keine fehlerhaften Crimpprozesse stattfinden oder Beschädigungen der Crimpwerkzeuge, weil die sich bei der Durchführung eines Crimpvorganges automatisch ergebenden, elastischen Deformierungen der Tragsäule, zumindest eines Crimpwerkzeuges und/oder des Stellgliedes mittels eines Verformungssensors erfasst und in ein Signal umgeformt werden, dass der Größe der elastischen Verformung Tragsäule, zumindest eines Crimpwerkzeuges und/oder des Stellgliedes proportional entspricht, wobei der Verformungssensor mit der Steuerung des Motors signalleitend verbunden ist und eine Rückführung des verschiebbaren Crimpwerkzeuges in seine Ausgangslage bewirkt beim Auftreten eines Signals, das einen willkürlich einstellbaren Wert überschreitet. Dadurch können elastische Verformungen der Tragsäule, zumindest eines Crimpwerkzeuges und/oder des Stellgliedes überschreitende, plastische Deformierungen an diesen Teilen nicht mehr auftreten, wodurch sicher gestellt ist, daß gebrauchsbedingte Beschädigungen ausgeschlossen sind. Dennoch ist die Baugröße der erfindungsgemäßen Crimpzange im Vergleich zur bekannten Ausführung deutlich reduziert. Sie lässt sich dadurch problemlos an engen Einsatzstellen verwenden, beispielsweise an Montageorten, die sich im Inneren von Kraftfahrzeugen befinden.In this embodiment, the invention is based on the recognition that electric motors with a rotor rotating about an axis are distinguished by an excellent robustness and accordingly have a long service life. However, the conversion of the fast rotational movement in a slow forward movement of the displaceable crimping tool of a crimping tool always requires the use of a transmission with an extremely high transmission ratio and a correspondingly large switch-off inertia. These conditions are fulfilled even with the crimping tool according to the invention. Nevertheless, no faulty crimping processes can occur take place or damage the crimping tools, because the automatically resulting in the implementation of a crimping, elastic deformations of the support column, at least one crimping tool and / or the actuator detected by a deformation sensor and converted into a signal that the size of the elastic deformation support column, at least proportional to a crimping tool and / or the actuator, wherein the deformation sensor is signal conducting connected to the control of the motor and causes a return of the displaceable crimping tool to its original position upon the occurrence of a signal exceeding an arbitrarily adjustable value. As a result, elastic deformations of the support column, at least one crimping tool and / or the actuator border, plastic deformations on these parts no longer occur, which ensures that use-related damage is excluded. Nevertheless, the size of the crimping tool according to the invention is significantly reduced compared to the known design. As a result, it can easily be used in tight places, for example at assembly sites located inside motor vehicles.
An sich genügt es zur Errichtung dieses Zieles, den Motor beim Erreichen oder Überschreiten des Wertes sofort still zu setzen und beispielsweise einen Bremsmotor zu verwenden. Derartige Motoren sind jedoch teurer als konventionelle Motoren und es ergibt sich ein Zeitverlust bis zur Einleitung der Rückwärtsbewegung des beweglichen Crimperwerkzeuges in seine Ausgangslage. Die erfindungsgemäße Bauart wird daher bevorzugt verwendet.In itself, it is sufficient to establish this goal to immediately shut down the engine when reaching or exceeding the value and, for example, to use a brake motor. However, such motors are more expensive than conventional motors and there is a loss of time to initiate the backward movement of the movable crimping tool to its original position. The design according to the invention is therefore preferably used.
Nach einer anderen vorteilhaften Ausgestaltung ist es vorgesehen, dass zwischen dem Läufer und dem beweglichen Crimpwerkzeug eine mit einerAccording to another advantageous embodiment, it is provided that between the rotor and the movable crimping tool one with a
Gewindemutter zusammenwirkende Gewindestange angeordnet ist, die gemeinsam die Rotationsbewegung des Läufers in eine Transversalbewegung der Mutter und des damit verbundenen, beweglichen Crimpwerkzeuges überführen. Eine solche Bauform zeichnet sich durch eine besonders große Robustheit aus und eine dementsprechend hohe Gebrauchsdauer. Hierbei hat es sich als besonders vorteilhaft erwiesen, wenn zwischen dem Elektromotor und dem verschiebbaren Crimpwerkzeug ein Getriebegehäuse vorgesehen ist, in dem die Gewindestange axial unverschiebbar und drehbar und die Gewindemutter axial verschiebbar und unverdrehbar aufgenommen ist. Eine solche Bauform lässt sich besonders einfach und völlig wartungsfrei gestalten. Dabei ist die Gewindestange zweckmäßig auf zumindest einem Kugellager abgestützt. Sie ist dadurch besonders leicht verdrehbar und benötigt dementsprechend geringe nur Antriebskräfte. Der Motor kann hinsichtlich seiner Baugröße entsprechend reduziert werden.Threaded nut co-operating threaded rod is arranged, which together the rotational movement of the rotor in a transverse motion the mother and the associated, movable crimping tool convict. Such a design is characterized by a particularly great robustness and a correspondingly long service life. It has proved to be particularly advantageous if a transmission housing is provided between the electric motor and the displaceable crimping tool, in which the threaded rod axially immovable and rotatable and the threaded nut is axially displaceable and non-rotatably received. Such a design can be made very simple and completely maintenance-free. The threaded rod is expediently supported on at least one ball bearing. As a result, it is particularly easy to rotate and accordingly requires only low drive forces. The engine can be reduced accordingly in terms of its size.
Das Getriebegehäuse und das Motorgehäuse sind zweckmäßig nebeneinanderliegend angeordnet, wobei die Gewindestange und der Läufer des Elektromotors durch einen Riementrieb verbunden sind. Die Baulänge, parallel zur Bewegung des beweglichen Crimpwerkzeugs betrachtet, reduziert sich dadurch auf ein Minimum, was die Handlichkeit weiter verbessert.The gear housing and the motor housing are expediently arranged next to each other, wherein the threaded rod and the rotor of the electric motor are connected by a belt drive. The length, viewed parallel to the movement of the movable crimping tool, thereby reduced to a minimum, which further improves the handling.
Falls der Verformungssensor an der Tragsäule zur Anwendung gelangt, hat es sich als vorteilhaft bewährt, wenn er zwischen dem festgelagerten Crimpwerkzeug und der Befestigungsstelle des Motorgehäuses positioniert ist. Die Festlegung an der Tragsäule kann bei einer langgestreckten Bauform mittels in Richtung der Krafteinleitungsrichtung beabstandeter Maschinenschrauben erfolgen. Eventuelle elastische Deformierungen der Tragsäule werden unmittelbar auf den Sensor übertragen und in ein Signal umgeformt, das proportional zur Größe der Verforumg ist. Es kann dementsprechend ausgewertet und zur Steuerung des Motors verwendet werden, um fehlerfreie Crimpprozesse zu erhalten und überlastungsbedingte Beschädigungen zu vermeiden. Da das Signal den Motor bei der erfindungsgemäßen Ausführung unter Umgehung der Getriebeuntersetzung auf direktem Wege steuert, ist die Erreichung beider Ziele in ausgezeichnetem Maße gewährleistet.If the deformation sensor on the support column is used, it has proven to be advantageous if it is positioned between the fixed crimping tool and the attachment point of the motor housing. The attachment to the support column can be carried out in an elongated design by means of spaced in the direction of the force introduction direction machine screws. Any elastic deformations of the support column are transmitted directly to the sensor and converted into a signal that is proportional to the size of the deformation. It can therefore be evaluated and used to control the motor to obtain error-free crimping and avoid damage caused by overload. Since the signal is the engine in the controls design according to the invention bypassing the gear reduction directly, the achievement of both objectives is guaranteed in an excellent degree.
Zweckmäßig wird der Verformungssensor durch einen elektrischen Zug- und/oder Drucksensor gebildet. Die sich während der bestimmungsgemäßen Verwendung ergebenden Verformungen lassen sich dadurch ausgezeichnet und direkt erfassen.Suitably, the deformation sensor is formed by an electrical tension and / or pressure sensor. The resulting during the intended use deformations can be characterized excellent and capture directly.
Kurzbeschreibung der ZeichnungBrief description of the drawing
Figur 1 zeigt eine beispielhafte Ausführung der erfindungsgemäßen Crimpzange in längsgeschnittener DarstellungFIG. 1 shows an exemplary embodiment of the crimping tool according to the invention in longitudinal section
Figur 2 zeigt die Crimpzange nach Figur 1 in quergeschnittener Darstellung entlang der Ebene A-AFIG. 2 shows the crimping tool according to FIG. 1 in a cross-sectional representation along the plane A-A
Ausführung der ErfindungEmbodiment of the invention
In den Figuren 1 und 2 wird eine motorisch angetriebene Crimpzange in längs- bzw. quergeschnittener Darstellung gezeigt, umfassend eine Tragsäule 1 , auf der zwei Crimpwerkzeuge 2, 3 gelagert sind, von denen das eine 2 fest und das andere 3 in einer Führung 4 der Tragsäule 1 verschiebbar ist, einen signalbetätigbaren Motor 5 mit einem Motorgehäuse 6, das starr an der Tragsäule 1 befestigt ist und ein Stellglied 7 umschließt, dass mit dem verschiebbaren Crimpwerkzeug 3 verbunden ist sowie eine Steuerung zur Betätigung des Motors 5. Der Motor 5 besteht aus einem Elektromotor mit einem um eine Achse rotierenden Läufer. Dieser ist durch einen Riementrieb 12 mit einem Stellglied 7 verbunden, dass durch eine Gewindespindel gebildet wird, welche durch Kugellager 11 auf dem Getriebegehäuse 9 abgestützt ist. Das Getriebegehäuse 9 umfasst im unteren Teil eine Führung von sechseckigem Profil, wie in Figur 2 zu ersehen. In der Führung ist das Stellglied 7.1 gelagert, welches nach Art einer Gewindemutter gestaltet ist und am unteren Ende der Zeichnung das verschiebbare Crimpwerkzeug 3 trägt.In Figures 1 and 2, a motor-driven crimping tool is shown in longitudinal or cross-sectional view, comprising a support column 1, on which two crimping tools 2, 3 are mounted, one of which 2 fixed and the other 3 in a guide 4 of Supporting column 1 is displaceable, a signal-actuated motor 5 with a motor housing 6 which is rigidly attached to the support column 1 and an actuator 7 surrounds that is connected to the displaceable crimping tool 3 and a controller for actuating the motor 5. The motor 5 consists of an electric motor with a rotor rotating about an axis. This is connected by a belt drive 12 with an actuator 7 that is formed by a threaded spindle is supported by ball bearings 11 on the gear housing 9. The gear housing 9 comprises in the lower part of a guide of hexagonal profile, as seen in Figure 2. In the guide, the actuator 7.1 is mounted, which is designed in the manner of a threaded nut and at the bottom of the drawing, the displaceable crimping tool 3 carries.
Dem verschiebbaren Crimpwerkzeug 3 gegenüber liegend ist am unteren Ende der Tragsäule 1 ein festgelagertes, weiteres Crimpwerkzeug 2 vorgesehen.The displaceable crimping tool 3 opposite lying at the lower end of the support column 1 is a festgelagertes, further crimping tool 2 is provided.
Verformungssensoren 8 können ausschließlich, alternativ oder kumulativ vorgesehen sein an der Tragsäule 1 , zumindest einem Crimpwerkzeug 2, 3 und/oder dem Stellglied 7, 7.1. In den meisten Fällen ist die Verwendung eines einzigen Sensors völlig ausreichend. Dieser lässt sich besonders vorteilhaft an der Tragsäule 1 befestigen und im Falle einer Beschädigung problemlos ersetzen.Deformation sensors 8 may be exclusively, alternatively or cumulatively provided on the support column 1, at least one crimping tool 2, 3 and / or the actuator 7, 7.1. In most cases, the use of a single sensor is sufficient. This can be attached particularly advantageous to the support column 1 and replace easily in case of damage.
Die zum Betrieb der dargestellten Crimpzange benötigte Steuerung ist in der Zeichnung nicht wiedergegeben. Sie wird im allgemeinen in das Motorgehäuse 6 integriert und ist an dieser Stelle in besonders gutem Maße vor mechanischen Beschädigungen geschützt.The control needed to operate the illustrated crimping tool is not shown in the drawing. It is generally integrated into the motor housing 6 and is protected at this point to a particularly good extent from mechanical damage.
Zur Funktion ist folgendes auszuführen:To perform the following:
Zur Auslösung eines Crimpprozesses ist im allgemeinen ein Tastschalter vorgesehen. Dieser bewirkt über die in den Zeichnungen nicht wiedergegebenen Steuerung eine Rotation des im Elektromotor enthaltenen Läufers. Die Rotation wird durch den Riementrieb 12 auf das als Gewindespindel ausgebildete Stellglied 7 übertragen, das mit dem Innengewinde des nach Art einer Gewindemutter gestalteten Stellgliedes 7.1 in Eingriff steht. Dieses ist durch eine Sechskantführung des Getriebegehäuses 9 daran gehindert, der Drehbewegung des Stellglieds 7 zu folgen, während letzteres auf Kugellagern 11 in axialer Richtung beiderseits in dem Getriebegehäuse 9 abgestützt und dadurch an einer axial gerichteten Ausweichbewegung gehindert ist. Die Drehbewegung des Stellglieds 7 bewirkt als Folge hiervon eine abwärts gerichtete Relatiwerlagerung des Stellglieds 7.1 , die unmittelbar das auf seiner Stirnfläche festgelegte, verschiebbare Crimpwerkzeug 3 übertragen wird. Das verschiebbare Crimpwerkzeug 3 wird dadurch in Richtung des festehenden Crimpwerkzeugs 2 verlagert. Dabei ergibt sich die Möglichkeit, dass das relativ verschiebbare und das starr festgelegte Crimpwerkzeug unmittelbar aufeinander treffen, mit der Folge, dass sich eine elastische Deformierung der Tragsäule 1 ergibt. Diese wird von zumindest einem der Sensoren 8 erfasst und in ein Signal umgeformt, dass der Größe der Verformung proportional entspricht. Wird dabei ein willkürlich einstellbarer Maximalwert überschritten, dann bewirkt die in der Zeichnung nicht wiedergegebene Steuerung eine Umsteuerung des Motors in Gegendrehrichtung und dadurch eine sofortige Rückführung des beweglichen Crimpwerkzeugs in seine Ausgangslage. Eine plastische Deformierung oder gar eine Beschädigung des Crimpwerkzeuges wird hierduch zuverlässig vermieden.To initiate a crimping process, a key switch is generally provided. This causes via the not shown in the drawings control a rotation of the rotor contained in the electric motor. The rotation is transmitted through the belt drive 12 to the trained as a threaded spindle actuator 7, which is in engagement with the internal thread of the designed like a threaded nut actuator 7.1. This is by a hexagonal guide of the gear housing. 9 prevented from following the rotational movement of the actuator 7, while the latter is supported on ball bearings 11 in the axial direction on both sides in the gear housing 9 and thereby prevented from an axially directed evasive movement. The rotational movement of the actuator 7 causes as a result thereof a downward Relatiwerlagerung of the actuator 7.1, which is transmitted directly fixed on its face, displaceable crimping tool 3. The displaceable crimping tool 3 is thereby displaced in the direction of the stationary crimping tool 2. This results in the possibility that the relatively displaceable and the rigidly fixed crimping tool meet directly, with the result that an elastic deformation of the support column 1 results. This is detected by at least one of the sensors 8 and converted into a signal that corresponds to the size of the deformation proportionally. If an arbitrarily adjustable maximum value is exceeded, the control, which is not reproduced in the drawing, causes a reversal of the motor in the opposite direction of rotation and thus an immediate return of the movable crimping tool to its starting position. A plastic deformation or even damage to the crimping tool is thereby reliably avoided.
Als Alternative hierzu ergibt sich bei der Benutzung die Möglichkeit, dass sich bei Auslösung der Steuerung zweier zu verbindender Drahtenden und ein Crimpverbinder in dem Zwischenraum zwischen den beiden Crimpwerkzeugen befinden. Auch in diesem Falle löst die Betätigung des Druckschalters eine abwärtsgerichtete Relativerlagerung des verschiebbaren Crimpwerkzeuges aus, die jedoch die Durchführung eines Crimpprozesses bewirkt. Dabei werden die zu verbindenden Drahtenden gemeinsam von einem Crimp umschlossen, der normalerweise aus metallischem Werkstoff besteht und derart plastisch verformt wird, dass die beiden Drahtenden anschließend durch den Crimp unlösbar verbunden sind. Die dazu nötigen Kräfte sind erheblich. Sie werden so lange vergrößert, bis eine ausreichende, plastische Deformierung des Crimps eingetreten ist. Der diesbezügliche Wert ist in Abhängigkeit von der Größe des Crimps verschieden und kann im Versuch sehr leicht ermittelt werden. Wird er erreicht, dann löst zumindest einer der Sensoren 8 eine Umsteuerung des Motors 5 aus und eine Rückführung des verschiebbaren Crimpwerkzeugs in seine Ausgangslage. Damit wird bei jedem nachfolgneden Crimpvorgang die geforderte, feste Verbindung der beiden Draht- oder Kabelenden erreicht, ohne daß es zu einer Beschädigung des Crimpwerkzeuges kommen kann. Auch eine Verwendung bei der Verbindung anderer, säulenförmiger Körper ist möglich.As an alternative to this, there is the possibility during use of the triggering of the control of two wire ends to be connected and a crimp connector in the space between the two crimping tools. Also in this case, the actuation of the pressure switch triggers a downward relative bearing of the displaceable crimping tool, which, however, causes the implementation of a crimping process. In this case, the wire ends to be connected are jointly enclosed by a crimp, which normally consists of metallic material and is plastically deformed such that the two wire ends are subsequently connected inseparably by the crimp. The necessary forces are considerable. They will be like that increased long, until a sufficient, plastic deformation of the crimp has occurred. The value in this regard differs depending on the size of the crimp and can be determined very easily in the experiment. If it is reached, then at least one of the sensors 8 triggers a reversal of the motor 5 and a return of the displaceable crimping tool to its original position. Thus, the required, firm connection of the two wire or cable ends is achieved at each nachnachneden crimping, without causing damage to the crimping tool. Also, use in the connection of other, columnar body is possible.
Die erfindungsgemäße Crimpzange zeichnet sich durch eine außerordentlich große Robustheit und gute Handlichkeit aus. Die zum Betrieb erforderliche, elektrische Energie lässt sich problemlos unter Verwendung dünner, flexibler Kabel zuführen. Einer Verwendung an schwierig zu erreichenden Einsatzstellen steht dadurch nichts entgegen. The crimping tool according to the invention is characterized by an extremely high robustness and good manageability. The electrical energy required for operation can easily be supplied using thin, flexible cables. A use of difficult-to-reach places of use is nothing contrary.

Claims

Patentansprüche claims
1. Motorisch angetriebene Crimpzange, umfassend eine Tragsäule (1), auf der zwei Crimpwerkzeuge (2,3) gelagert sind, von denen das eine (2) fest und das andere (3) in einer Führung (4) der Tragsäule (1 ) verschiebbar ist, einen signalbetätigbaren Motor (5) mit einem Motorgehäuse (6), das starr an der Tragsäule (1) befestigt ist und ein Stellglied (7) umschließt, das mit dem verschiebbaren Crimpwerkzeug (3) verbunden ist sowie eine Steuerung zur Betätigung des Motors (5), dadurch gekennzeichnet, daß der Motor (5) ein Elektromotor mit einem um eine Achse rotierendem Läufer ist, daß an der Tragsäule (1), zumindest einem Crimpwerkzeug (2,3) und/oder dem Stellglied (7, 7.1) ein Verformungssensor (8) vorgesehen ist, der die sich beim Crimpvorgang ergebende, mechanische Verformung der Tragsäule (1), zumindest eines Crimpwerkzeuges (2,3) und/oder des Stellgliedes (7, 7.1) zu erfassen geeignet ist und in ein Signal umformt, das der Größe der Verformung proportional entspricht und daß der Verformungssensor (8) mit der Steuerung des Motors (5) signalleitend verbunden ist und eine Rückführung des verschiebbaren Crimpwerzeugs (3) in seine Ausgangslage bewirkt beim Auftreten eines Signals, das einen willkürlich einstellbaren Wert erreicht oder überschreitet.1. Motor-driven crimping tool, comprising a support column (1) on which two crimping tools (2, 3) are mounted, one of which (2) fixed and the other (3) in a guide (4) of the support column (1) displaceable, a signal - actuated motor (5) with a motor housing (6) which is rigidly attached to the support column (1) and encloses an actuator (7) which is connected to the displaceable crimping tool (3) and a controller for actuating the Motor (5), characterized in that the motor (5) is an electric motor with a rotor rotating about an axis, that on the support column (1), at least one crimping tool (2,3) and / or the actuator (7, 7.1 ) a deformation sensor (8) is provided, which is suitable for detecting the crimping, mechanical deformation of the support column (1), at least one crimping tool (2,3) and / or the actuator (7, 7.1) is suitable and in a signal deformed, which corresponds proportionally to the size of the deformation and in that the deformation sensor (8) is signal-connected to the control of the motor (5) and effects a return of the displaceable crimping tool (3) to its initial position upon the occurrence of a signal which reaches or exceeds an arbitrarily settable value.
2. Crimpzange nach Anspruch 1 , dadurch gekennzeichnet, daß zwischen dem Läufer und dem beweglichen Crimpwerkzeug (3) eine mit einer Gewindemutter zusammenwirkende Gewindestange angeordnet ist, die gemeinsam die Rotationsbewegung des Läufers in eine Transversalbewegung der Mutter und des beweglichen Crimpwerkzeuges (3) bewirken. 2. Crimping tool according to claim 1, characterized in that between the rotor and the movable crimping tool (3) cooperating with a threaded rod threaded rod is arranged, which together cause the rotational movement of the rotor in a transverse movement of the nut and the movable crimping tool (3).
3. Crimpzange nach Anspruch 2, dadurch gekennzeichnet, daß zwischen dem Elektromotor (5) und dem verschiebbaren Crimpwerkzeug (3) ein Getriebegehäuse (9) vorgesehen ist, in dem die Gewindestange axial unverschiebbar und drehbar und die Gewindemutter axial verschiebbar und und unverdrehbar aufgenommen ist.3. Crimping tool according to claim 2, characterized in that between the electric motor (5) and the displaceable crimping tool (3) a transmission housing (9) is provided, in which the threaded rod is axially immovable and rotatable and the threaded nut axially slidably and and is received non-rotatably ,
4. Crimpzange nach Anspruch 3, dadurch gekennzeichnet, daß die Gewindestange auf zumindest einem Kugellager (11) abgestützt ist.4. Crimping tool according to claim 3, characterized in that the threaded rod is supported on at least one ball bearing (11).
5. Crimpzange nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Getriebegehäuse (9) und das Motorgehäuse (6) nebeneinander liegend angeordnet sind und daß die Gewindestange und der Läufer des Elektromotors (5) durch einen Riementrieb (12) verbunden sind.5. Crimping tool according to one of claims 1 to 4, characterized in that the gear housing (9) and the motor housing (6) are arranged side by side lying and that the threaded rod and the rotor of the electric motor (5) by a belt drive (12) are connected ,
6. Crimpzange nach einem der Ansprüchel bis 5, dadurch gekennzeichnet, daß der Verformungssensor (8) an der Tragsäule (1) zwischen dem fest gelagerten Crimpwerkzeug (2) und der Befestigungsstelle des Motorgehäuses (6) angeordnet ist.6. Crimping tool according to one of Ansprüchel to 5, characterized in that the deformation sensor (8) on the support column (1) between the fixedly mounted crimping tool (2) and the attachment point of the motor housing (6) is arranged.
7. Crimpzange nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der Verformungssensor (8) durch einen elektrischen Zug- und/oder Drucksensor gebildet ist. 7. Crimping tool according to one of claims 1 to 6, characterized in that the deformation sensor (8) is formed by an electrical tension and / or pressure sensor.
EP04790977A 2003-10-30 2004-10-28 Crimping pliers Expired - Lifetime EP1634352B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL04790977T PL1634352T3 (en) 2003-10-30 2004-10-28 Crimping pliers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10350952A DE10350952A1 (en) 2003-10-30 2003-10-30 Crimping Tool
PCT/EP2004/012207 WO2005043692A1 (en) 2003-10-30 2004-10-28 Crimping pliers

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EP1634352A1 true EP1634352A1 (en) 2006-03-15
EP1634352B1 EP1634352B1 (en) 2007-04-04

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EP (1) EP1634352B1 (en)
AT (1) ATE358903T1 (en)
DE (2) DE10350952A1 (en)
ES (1) ES2285533T3 (en)
PL (1) PL1634352T3 (en)
WO (1) WO2005043692A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004043776B3 (en) * 2004-09-10 2006-06-14 Bernhard Schäfer Werkzeug- und Sondermaschinenbau GmbH Motor-driven crimping device
WO2012085179A1 (en) * 2010-12-22 2012-06-28 Rennsteig Werkzeuge Gmbh Pliers
EP2786845B1 (en) * 2013-04-03 2016-03-16 FELCO Motion SA Portable electric tool
EP2826598B1 (en) * 2013-07-17 2016-12-28 Wezag GmbH Werkzeugfabrik Pressing tool with a mechanically acting pressing force limiter
CN104875162A (en) * 2015-06-11 2015-09-02 赵士立 Automatic rotary puller for fixed bolts

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EP0184204A1 (en) * 1984-12-06 1986-06-11 Siemens Aktiengesellschaft Power control for crimping machines
DE3719442A1 (en) * 1987-06-11 1988-12-22 Pfisterer Elektrotech Karl Portable press for producing compression joints
SE8803688D0 (en) * 1988-10-17 1988-10-17 C A Weidmueller Gmbh & Co CRAFTS TOOL WITH ELECTRIC OPERATION
JPH06104067A (en) * 1992-09-18 1994-04-15 Nichifu Tanshi Kogyo:Kk Handheld crimping machine
JPH07176358A (en) * 1992-12-25 1995-07-14 Daiichi Denki:Kk Motor-driven terminal crimp tool
DE29806179U1 (en) * 1998-04-03 1998-10-08 Connectool GmbH & Co., 32758 Detmold Crimping tool
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ATE358903T1 (en) 2007-04-15
ES2285533T3 (en) 2007-11-16
DE502004003413D1 (en) 2007-05-16
WO2005043692A1 (en) 2005-05-12
DE10350952A1 (en) 2005-06-09
PL1634352T3 (en) 2007-08-31
EP1634352B1 (en) 2007-04-04

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