EP2030291B1 - Clamping apparatus for a crimping machine and method for producing a crimped connection with a crimping machine and the clamping apparatus according to the invention - Google Patents

Clamping apparatus for a crimping machine and method for producing a crimped connection with a crimping machine and the clamping apparatus according to the invention Download PDF

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Publication number
EP2030291B1
EP2030291B1 EP07789419.4A EP07789419A EP2030291B1 EP 2030291 B1 EP2030291 B1 EP 2030291B1 EP 07789419 A EP07789419 A EP 07789419A EP 2030291 B1 EP2030291 B1 EP 2030291B1
Authority
EP
European Patent Office
Prior art keywords
clamping jaw
cable
clamping
arm
crimping
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
EP07789419.4A
Other languages
German (de)
French (fr)
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EP2030291A2 (en
Inventor
Patrik Kamber
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.)
Schleuniger Holding AG
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Schleuniger Holding AG
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Publication date
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Publication of EP2030291A2 publication Critical patent/EP2030291A2/en
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Publication of EP2030291B1 publication Critical patent/EP2030291B1/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
    • H01R43/052—Crimping apparatus or processes with wire-feeding mechanism
    • 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
    • H01R43/05—Crimping apparatus or processes with wire-insulation stripping
    • 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
    • H01R43/055—Crimping apparatus or processes with contact member feeding mechanism
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49174—Assembling terminal to elongated conductor
    • Y10T29/49181—Assembling terminal to elongated conductor by deforming
    • Y10T29/49185—Assembling terminal to elongated conductor by deforming of terminal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5147—Plural diverse manufacturing apparatus including means for metal shaping or assembling including composite tool
    • Y10T29/5148—Plural diverse manufacturing apparatus including means for metal shaping or assembling including composite tool including severing means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/5313—Means to assemble electrical device
    • Y10T29/532—Conductor
    • Y10T29/53209—Terminal or connector
    • Y10T29/53213—Assembled to wire-type conductor
    • Y10T29/53222—Means comprising hand-manipulatable implement
    • Y10T29/53226—Fastening by deformation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/5313—Means to assemble electrical device
    • Y10T29/532—Conductor
    • Y10T29/53209—Terminal or connector
    • Y10T29/53213—Assembled to wire-type conductor
    • Y10T29/53235—Means to fasten by deformation

Definitions

  • the invention relates to a clamping device for a crimping machine, for clamping an electrical cable and a method for producing a crimp connection with a crimping machine and the clamping device according to the invention.
  • Crimping machines today are often equipped in addition to the actual crimping tool, inter alia, with a stripping and have a clamping device for clamping the electrical cable to be crimped to a contact element, wherein the clamping device clamps the cable both during the stripping and during the crimping process.
  • a clamping device of a combined stripping / crimping for example, from DE-C2 195 11 372 known.
  • the clamping device is arranged perpendicular to the bottom plate of the base frame and connected to this stationary.
  • the clamping device has a carrier element attached to the front wall with a passage opening for the end of the electrical conductor to be machined.
  • the jaws are arranged so that they lie symmetrically above and below the passage opening.
  • the actuating arms are displaceable in the vertical direction by the fact that at the free end of the T-shaped member, an adjusting lever is articulated, which is pivotally connected to an angle lever via a roller / cam mechanism with the drive.
  • the free end of the actuating lever is pulled away by means of a tension spring from the carrier element, wherein the tension spring tries to close the jaws.
  • the pivoting of the T-shaped member via a highly complicated mechanism ultimately leads to the increase or for lowering the actuating arms.
  • the jaws connected to the actuator arms are moved towards each other to clamp the conductor or retracted to zero position when the machined conductor is removed and a new conductor is to be inserted. To start the stripping process, an electrical conductor is moved into the through-hole.
  • the stripped conductor end is introduced via an inlet funnel into the wire end ferrule to be processed, after which a crimping takes place. Thereafter, the inlet funnel is released again via a mandrel and the clamping jaws of the clamping device are removed from each other. Now the crimped conductor end of the device can be removed. The carriage returns to its original position until a new cycle is started via the switching flag.
  • This combined stripping / crimping device was developed by the DE-C1 196 15 564 developed so that a secure crimping and thus better Crimprich could be achieved.
  • This stripping / crimping device includes a stationary clamping device for clamping a wire to be stripped, a Abisolier observed which is movable in the longitudinal direction of the conductor end and a crimping device, which is also movable in the longitudinal direction of the conductor end to postpone a contact element on the stripped end of the conductor end and to crimp with this.
  • New opposite DE-C2 195 11 372 in that a centering device for the conductor end is arranged on the side of the clamping device facing the crimping device, wherein the centering device can also be displaceable in the longitudinal direction of the conductor end.
  • a cable crimping apparatus is known with stripping, in which the clamping device for the cable to be processed is a component of the stripping.
  • the stripping device When inserting the front portion of a cable into the opening of a downwardly open slot of a fixed jaw, the stripping device is started via a starting device.
  • the fixed jaw works with a deliverable jaws together.
  • the inserted cable is located with its rear portion on the underside of a support pad, which also forms part of a holder for a fixed Stripping.
  • the fixed stripping knife works with a deliverable stripping knife, also in the horizontal direction.
  • the starting device triggers a downward stroke of the plunger-like device part of the stripping device.
  • the vertical movement is converted via the wedge surfaces of the device part and a double-armed drive lever via the axis thereof into a spring-loaded horizontal movement of a slider which forms and carries the jaws at its front end.
  • a vertical downward movement of the stripping so that the cable clamping device is closed and holds the cable firmly.
  • the cable is now freed of its insulation by the stripping blades at its front end, and the severed section is withdrawn from the wire end by the insulation stripping device.
  • the clamping device and with it the stripped cable is lowered over the plunger on the die and the stripped end of the cable is crimped by the crimping device with a contact element.
  • the clamping device is still closed.
  • the drive lever of the stripping device carries a control pin which cooperates with a device-fixed link control. If the control pin arrived during the downward movement at the lower end of the wedge surface, a locking member is pushed up against the resistance of a return spring. During the subsequent upward stroke, the control pin slides along the locking member and opens the cable clamping device.
  • Such a clamping device is controlled by a highly complicated and maintenance-intensive mechanism. It must also be movable itself, since stripping and crimping are not performed in the same place.
  • the object of the invention is to provide a clamping device for a crimped electrical cable, which at a low mechanical effort enough force applying the cable and ensuring positionally accurate clamping throughout the stripping and crimping process.
  • the clamping device should be simple, low-maintenance and low-wear construction and allow a short stripping of the cable to be crimped. It is also an object of the invention to carry out the process for producing a crimp connection by using the clamping device according to the invention more cost-effective.
  • the clamping device for a crimping machine is connected to the crimping tool head via its front side wall and can be moved vertically with the crimping tool head.
  • Both clamping device and crimping tool head are arranged centrally in the longitudinal direction of the electrical cable to be clamped above the anvil and the front blade. Only the vertical movement of the crimping tool head is used as a drive for the clamping movement of the clamping device.
  • the crimping tool head and with it the clamping device move over an eccentric disc arranged in the crimping machine, which determines the stroke of the crimping tool.
  • the clamping device consists of at least two jaws, an upper and a lower jaws.
  • the jaws are spring-loaded in the vertical direction via one or more spring elements, such as compression springs, and thus movable in opposite directions to each other.
  • the maximum pressing force of the compression springs is achieved and the cable clamped between the jaws.
  • clamping device according to the invention can be attached to any other crimping tool of similar construction without great installation effort and can therefore serve as a separate purchased part for retrofitting older models.
  • the clamping device 10 shown is intended for a crimping machine 1, comprising a crimping tool head 2, a crimping tool main body 3 with an anvil 4 and an anvil 4 upstream front blade 21, further comprising a stripping 5, a Greelementzu Foodvoriques 6 and a coupling part 7 for coupling the coupling Crimping machine 1 with the crimping tool head 2, which is vertically movable to perform a crimping stroke.
  • the crimping tool head 2 has an end wall 9, in the direction of which a cable 8 to be crimped can be fed along a cable path 8 '.
  • the clamping device 10 clamps the electrical cable to be processed in the operating state both during the stripping and during the crimping process.
  • the clamping device 10 is connected to the crimping tool head 2 via its front side wall 9 and can be moved vertically together with the crimping tool head 2.
  • the clamping device 10 and / or the crimping tool head 2 are arranged centrally in the longitudinal direction of the cable path 8 'above the anvil 4 and the front blade 21.
  • 2 recesses or holes can be prefabricated in the front wall 9 of the crimping tool head, which allow a quick screw, plug and / or clamp connection with the crimping tool head 2 and its end wall 9.
  • these are not absolutely necessary.
  • the clamping device 10 has at least two clamping jaws, an upper jaw 12 and a lower jaw 11, on which one or more spring elements, such as compression springs 13, are movable in opposite directions in the vertical direction.
  • the jaws 11, 12 are arranged in a cuboid, at least downwardly open housing 14 movable.
  • the housing 14 is provided on its ceiling side 15 with two parallel to each other and perpendicular to the longitudinal direction of the cable 8 slots 16, 17, as shown in detail below.
  • the upper jaw 12 includes a jaw arm 25 and a jaw finger 22 bent at right angles toward lower jaws 11, the finger bottom 23 clamping the cable 8 during the entire machining process applied.
  • the lower jaw 11 has a substantially cuboid jaw arm 24 with a lower edge 29, an arm extension 26 which is approximately half as wide as the Klemmbackenarm 24 and which corresponds approximately to the width of the jaw arm 25 and one of the arm extension 26 at right angles in the upper direction Jaws 12 bent jaw fingers 27 on.
  • the compression springs 13 are attached in a cavity of the Klemmbackenarms 24 above the lower edge 29, the compression springs 13 are attached.
  • each jaw 11, 12 in the region of the jaw arms 24, 25 is at least one pin 18, 19 connected with different lengths, the longer pin 18 of the lower jaw 11, the first slot 16 in the ceiling side 15 of the housing 14 passes through and the shorter Pin 19 of the upper jaw 12 passes through the second slot 17, wherein the slots 16, 17, serve to guide the jaws 11, 12 in the execution of the vertical movement of the crimping tool head 2 and the clamping device 10.
  • the pins 18,19 form the end stops for the open position of the jaws 11, 12th
  • an L-shaped delimiting arm 20 is arranged at approximately half the height in this embodiment horizontally to the longitudinal direction of the cable 8, which engages in its longitudinal extent, the side wall 33 of the crimping tool head 2 and the clamping device 10 and approximately at right angles from about the second third of its length in the direction of the ceiling side 15 of the clamping device 10 is bent, wherein it overlaps the ceiling side 15 a maximum of half with play and where it is in its end directly above the longer pin 18 with this in contact.
  • the lower jaw arm 24 is supported in the upstroke over the formed on the lower jaw 11 longer pin 18 on the limiting arm 20 and opens in this way the jaw fingers 22, 27 during the upstroke again.
  • a second step ( Fig. 3 ) the crimping tool head 2 is moved in a vertical downward movement, which corresponds approximately to the height of the jaw opening 41 during insertion of the cable 8, so far down that the cable 8 between the top 28 of the lower jaw finger 27 and the bottom 23 of the upper jaw finger 22nd is clamped slip-resistant with interference fit.
  • the crimping tool head 2 stops in this position.
  • the downward stroke is ⁇ 5mm in the present embodiment.
  • the pin 18 on the lower jaw arm 24 thus moves relative to the first slot 16 of the jaw housing 14 by ⁇ 5mm upwards.
  • the lower jaw arm 24 remains in the position of the first step by the stationary attached limiter arm 20.
  • the clamping of the cable 8 is effected by the spring-supported clamping mechanism, in particular by the compression springs 13. Now, the stripping is carried out by the stripping 5 in a known manner.
  • the stripping 5 is moved out of the processing area ( Fig. 4 ).
  • a fourth step ( Fig. 5 ), the supply of a contact element (not shown) from the Kunststoffelementzu Foodvoriques 6 on the anvil 4 and in the immediate following the actual crimping process.
  • the jaws 11, 12, the cable clamp 8 unaltered with interference fit slidably are moved together with the crimping tool head 2 in a fast stroke vertically towards anvil 4, and the cable end (not shown) by at least one crimping die with a contact element (not shown) on the anvil 4 crimped in a known manner.
  • the electrical contact element (not shown) to be crimped is separated from the belt by the front knife 21 by the clamping device, which also functions as a front knife trigger. Due to the constant pressure of the compression springs 13, the jaw fingers 22, 27 remain equidistant from each other, so that loosening of the clamped cable 8 during the crimping process can not take place.
  • a fifth step ( Fig. 6 ) the crimping tool head 2 is moved in a stroke vertically up to the zero position or to the top dead center, pin 18 is thereby detected by the limiting arm 20 and moved to the lowest stop point in the first slot 16, wherein the upper jaw arm 25 begins to open as soon as pin 18 has exceeded the pin position of the second or third work step.
  • This is located the crimping machine 1 back to its normal position, the finished cable 8 with the crimped contact element can be removed and the crimping machine is again ready for execution of the first step according to Fig. 2 ,
  • a first eccentric position 38 according to Fig. 2 are crimping tool head 2 and clamping device 10 in the basic position.
  • the jaws 11 and 12 are open.
  • a second eccentric position 39 a partial movement of the eccentric disc has already taken place. In this area, the clamping of the cable takes place 8.
  • the eccentric disc has turned by approx. 45 °.
  • the angle of rotation can be between 10 and 120 °, depending on the cable thickness and the desired pressing force.
  • a third eccentric position 40 the eccentric disc has the maximum travel of 180 ° according to Fig. 5 moved back, the contact element (not shown) is crimped with the cable 8, the eccentric moves back to its original position 38 back ( Fig. 6 ), the jaws 11,12 are open again.
  • the advance of the contact element feed device 6 is controlled by a plate 35 fastened to the side wall 33 opposite the side wall 33 in that the plate 35 has a curved step 37 in the side edge 36 and is engaged with a cam roller 31.
  • the trigger sensor is an inductive proximity sensor and that the cable to be processed 8 presses after insertion into the cable duct openings 32, 32 'of the stripping 5 on a first sensor, which moves backwards while the Tripping sensor activated, which is preferably arranged at right angles to the first sensor.

Description

Die Erfindung betrifft eine Klemmvorrichtung für eine Crimpmaschine, zum Klemmen eines elektrischen Kabels sowie ein Verfahren zur Herstellung einer Crimpverbindung mit einer Crimpmaschine und der erfindungsgemäßen Klemmvorrichtung.The invention relates to a clamping device for a crimping machine, for clamping an electrical cable and a method for producing a crimp connection with a crimping machine and the clamping device according to the invention.

Crimpmaschinen sind heute vielfach neben dem eigentlichen Crimpwerkzeug unter anderem mit einer Abisoliervorrichtung ausgestattet und weisen eine Klemmvorrichtung zum Klemmen des an ein Kontaktelement zu crimpenden elektrischen Kabels auf, wobei die Klemmvorrichtung das Kabel sowohl während des Abisoliervorgangs als auch während des Crimpvorgangs klemmt.Crimping machines today are often equipped in addition to the actual crimping tool, inter alia, with a stripping and have a clamping device for clamping the electrical cable to be crimped to a contact element, wherein the clamping device clamps the cable both during the stripping and during the crimping process.

Eine Klemmvorrichtung einer kombinierten Abisolier-/Crimpvorrichtung ist beispielsweise aus der DE-C2 195 11 372 bekannt. Die Klemmvorrichtung ist senkrecht zur Bodenplatte des Grundgestells angeordnet und mit dieser stationär verbunden. Die Klemmvorrichtung weist ein an der Vorderwand angebrachtes Trägerelement mit einer Durchgangsöffnung für das zu bearbeitende Ende des elektrischen Leiters auf. An beiden Enden eines T-förmigen Glieds mit horizontalem Querbalken ist je ein Stellarm schwenkbar angelenkt, wobei jeder Stellarm einen Klemmbacken trägt. Dabei sind die Klemmbacken so angeordnet, dass sie symmetrisch oben und unten zur Durchgangsöffnung liegen. Die Stellarme sind in Vertikalrichtung dadurch verschiebbar, dass am freien Ende des T-förmigen Glieds ein Stellhebel angelenkt ist, der mit einem Winkelhebel über einen Rollen-/Kurvenscheibenmechanismus gelenkig mit dem Antrieb verbunden ist. Das freie Ende des Stellhebels wird mittels einer Zugfeder vom Trägerelement weggezogen, wobei die Zugfeder versucht, die Klemmbacken zu schließen. Die Verschwenkung des T-förmigen Glieds über einen hoch komplizierten Mechanismus führt letztendlich zur Anhebung bzw. zur Absenkung der Stellarme. Dabei werden die mit den Stellarmen verbundenen Klemmbacken aufeinander zu bewegt, um den Leiter zu klemmen oder in Null-Stellung zurückgefahren, wenn der bearbeitete Leiter entnommen und ein neuer Leiter eingeführt werden soll. Um den Abisolierprozess zu starten, wird ein elektrischer Leiter in die Durchgansöffnung bewegt. Dabei trifft er auf die Schaltfahne eines Microschalters am Messerkopf der Abisoliereinheit. Durch die Berührung wird der Motor über den Microschalter eingeschaltet, so dass das Leiterende mittels der Klemmbacken eingeklemmt wird. Nun bewegen sich die Schneidmesser aufeinander zu und zerschneiden die Leiterisolation. Danach werden die Schneidmesser durch den Schlitten in Richtung Rückwand bewegt, so dass bei noch eingeklemmtem Leiter die zerschnittene Leiterisolation abgezogen wird. Inzwischen bewegen sich die beiden Schwenkarme der Abisoliereinheit weit auseinander, die zu verarbeitende Aderendhülse wird vom Aderendhülsengurt abgetrennt und dem Gesenk in der Crimptrommel zugeführt, und das Gesenk wird in Crimpposition gefahren. Dabei wird das abisolierte Leiterende über einen Einlauftrichter in die zu verarbeitende Aderendhülse eingeführt, wonach ein Crimpvorgang erfolgt. Danach wird über einen Dorn der Einlauftrichter wieder freigegeben und die Klemmbacken der Klemmvorrichtung werden voneinander entfernt. Nun kann das vercrimpte Leiterende der Vorrichtung entnommen werden. Der Schlitten läuft in seine Ausgangsstellung zurück bis ein neuer Arbeitszyklus über die Schaltfahne gestartet wird.A clamping device of a combined stripping / crimping, for example, from DE-C2 195 11 372 known. The clamping device is arranged perpendicular to the bottom plate of the base frame and connected to this stationary. The clamping device has a carrier element attached to the front wall with a passage opening for the end of the electrical conductor to be machined. At each end of a T-shaped member with a horizontal crossbar one actuating arm is pivotally articulated, each actuator arm carries a jaw. The jaws are arranged so that they lie symmetrically above and below the passage opening. The actuating arms are displaceable in the vertical direction by the fact that at the free end of the T-shaped member, an adjusting lever is articulated, which is pivotally connected to an angle lever via a roller / cam mechanism with the drive. The free end of the actuating lever is pulled away by means of a tension spring from the carrier element, wherein the tension spring tries to close the jaws. The pivoting of the T-shaped member via a highly complicated mechanism ultimately leads to the increase or for lowering the actuating arms. The jaws connected to the actuator arms are moved towards each other to clamp the conductor or retracted to zero position when the machined conductor is removed and a new conductor is to be inserted. To start the stripping process, an electrical conductor is moved into the through-hole. He encounters the switching flag of a microswitch on the cutter head of Abisoliereinheit. The touch turns on the motor via the microswitch so that the conductor end is clamped by the jaws. Now the cutting blades move towards each other and cut the conductor insulation. Thereafter, the cutting blades are moved by the carriage in the direction of the rear wall, so that when the conductor is still clamped the cut conductor insulation is removed. Meanwhile, the two swing arms of the Abisoliereinheit move far apart, the wire end ferrule to be processed is separated from the wire end ferrule and fed to the die in the crimping drum, and the die is moved into crimping position. The stripped conductor end is introduced via an inlet funnel into the wire end ferrule to be processed, after which a crimping takes place. Thereafter, the inlet funnel is released again via a mandrel and the clamping jaws of the clamping device are removed from each other. Now the crimped conductor end of the device can be removed. The carriage returns to its original position until a new cycle is started via the switching flag.

Diese kombinierte Abisolier-/Crimpvorrichtung wurde von der DE-C1 196 15 564 so weitergebildet, dass ein sicheres Vercrimpen und damit bessere Crimpergebnisse erzielt werden konnten. Auch diese Abisolier-/Crimpvorrichtung enthält eine stationäre Klemmeinrichtung zum Einklemmen eines abzuisolierenden Drahtes, eine Abisoliereinrichtung, die in Längsrichtung des Leiterendes bewegbar ist und eine Crimpeinrichtung, die ebenfalls in Längsrichtung des Leiterendes bewegbar ist, um auf den abisolieirten Teil des Leiterendes ein Kontaktelement aufzuschieben und mit diesem zu vercrimpen. Neu gegenüber DE-C2 195 11 372 ist, dass an der der Crimpeinrichtung zugewandten Seite der Klemmeinrichtung eine Zentriereinrichtung für das Leiterende angeordnet ist, wobei die Zentriereinrichtung auch in Längsrichtung des Leiterendes verschiebbar sein kann. Mit einer solchen Zentriereinrichtung wird erreicht, dass das eingeklemmte Leiterende besser in seiner Sollposition verbleibt, was insbesondere bei Leitern mit zunehmend kleineren Querschnitten immer schwieriger wird.This combined stripping / crimping device was developed by the DE-C1 196 15 564 developed so that a secure crimping and thus better Crimpergebnisse could be achieved. This stripping / crimping device includes a stationary clamping device for clamping a wire to be stripped, a Abisoliereinrichtung which is movable in the longitudinal direction of the conductor end and a crimping device, which is also movable in the longitudinal direction of the conductor end to postpone a contact element on the stripped end of the conductor end and to crimp with this. New opposite DE-C2 195 11 372 in that a centering device for the conductor end is arranged on the side of the clamping device facing the crimping device, wherein the centering device can also be displaceable in the longitudinal direction of the conductor end. With such a centering device is achieved that the clamped conductor end better remains in its desired position, which is increasingly difficult, especially for ladders with increasingly smaller cross-sections.

Derartige Vorrichtungen sind kompliziert und vielteilig aufgebaut. Die hohe Anzahl an Kurvenscheiben und Gelenken erfordert einen hohen Wartungsaufwand.Such devices are complicated and constructed in many parts. The high number of cams and joints requires a high maintenance.

Aus dem deutschen Gebrauchsmuster DE-U1 91 02 633.4 ist eine Kabel-Crimpvorrichtung mit Abisoliergerät bekannt, bei der die Klemmvorrichtung für das zu verarbeitende Kabel ein Bestandteil des Abisoliergerätes ist. Beim Einlegen des vorderen Bereichs eines Kabels in die Öffnung eines nach unten offenen Schlitzes eines festen Klemmbackens wird das Abisoliergerät über eine Startvorrichtung gestartet. Der feste Klemmbacken arbeitet mit einem zustellbaren Klemmbacken zusammen. Das eingeführte Kabel liegt mit seinem hinteren Bereich unterseitig auf einer Stützauflage auf, die gleichzeitig einen Teil eines Halters für ein feststehendes Abisoliermesser bildet. Das feststehende Abisoliermesser arbeitet mit einem zustellbaren Abisoliermesser, ebenfalls in horizontaler Richtung zusammen. Die Startvorrichtung löst einen Abwärtshub des stößelartigen Vorrichtungsteils der Abisoliervorrichtung aus. Dabei wird die Vertikalbewegung über die Keilflächen des Vorrichtungsteils und der eines doppelarmigen Antriebshebels über dessen Achse in eine federbelastete Horizontalbewegung eines Schiebers umgewandelt, der an seinem vorderen Ende den Klemmbacken bildet und trägt. Bei einer senkrechten Abwärtsbewegung der Abisoliervorrichtung ist damit die Kabelklemmvorrichtung geschlossen und hält das Kabel fest. Das Kabel wird nun von den Abisoliermessern an seinem vorderen Ende von seiner Isolierung befreit, und das abgetrennte Teilstück wird durch die Isolierungs-Abziehvorrichtung vom Drahtende abgezogen. Danach wird die Klemmvorrichtung und mit ihr das abisolierte Kabel über den Stößel auf die Matrize abgesenkt und das abisolierte Ende des Kabels wird von der Crimpvorrichtung mit einem Kontaktelement vercrimpt. Dabei ist die Klemmvorrichtung noch immer geschlossen. An seinem unteren Ende trägt der Antriebshebel der Abisoliervorrichtung einen Steuerstift, der mit einer vorrichtungsfesten Kulissensteuerung zusammenarbeitet. Ist der Steuerstift während der Abwärtsbewegung am unteren Ende der Keilfläche angekommen, wird gegen den Widerstand einer Rückstellfeder ein Sperrglied hochgeschoben. Beim anschließenden Aufwärtshub gleitet der Steuerstift am Sperrglied entlang und öffnet die Kabelklemmvorrichtung.From the German utility model DE-U1 91 02 633.4 a cable crimping apparatus is known with stripping, in which the clamping device for the cable to be processed is a component of the stripping. When inserting the front portion of a cable into the opening of a downwardly open slot of a fixed jaw, the stripping device is started via a starting device. The fixed jaw works with a deliverable jaws together. The inserted cable is located with its rear portion on the underside of a support pad, which also forms part of a holder for a fixed Stripping. The fixed stripping knife works with a deliverable stripping knife, also in the horizontal direction. The starting device triggers a downward stroke of the plunger-like device part of the stripping device. In this case, the vertical movement is converted via the wedge surfaces of the device part and a double-armed drive lever via the axis thereof into a spring-loaded horizontal movement of a slider which forms and carries the jaws at its front end. In a vertical downward movement of the stripping so that the cable clamping device is closed and holds the cable firmly. The cable is now freed of its insulation by the stripping blades at its front end, and the severed section is withdrawn from the wire end by the insulation stripping device. Thereafter, the clamping device and with it the stripped cable is lowered over the plunger on the die and the stripped end of the cable is crimped by the crimping device with a contact element. The clamping device is still closed. At its lower end, the drive lever of the stripping device carries a control pin which cooperates with a device-fixed link control. If the control pin arrived during the downward movement at the lower end of the wedge surface, a locking member is pushed up against the resistance of a return spring. During the subsequent upward stroke, the control pin slides along the locking member and opens the cable clamping device.

Auch eine solche Klemmvorrichtung wird über einen hoch komplizierten und wartungsintensiven Mechanismus gesteuert. Sie muss selbst auch beweglich sein, da Abisoliervorgang und Crimpvorgang nicht am selben Ort durchgeführt werden.Also, such a clamping device is controlled by a highly complicated and maintenance-intensive mechanism. It must also be movable itself, since stripping and crimping are not performed in the same place.

Weitere Klemmvorrichtungen sind aus den Dokumenten EP-A-0 303 724 , DE 28 20 690 A1 und EP-A2-0 887 897 bekannt.Other clamping devices are from the documents EP-A-0 303 724 . DE 28 20 690 A1 and EP-A2-0 887 897 known.

Aufgabe der Erfindung ist es, eine Klemmvorrichtung für ein zu vercrimpendes elektrisches Kabel zu schaffen, welche bei einem geringen mechanischen Aufwand genug Kraft aufbringt, das Kabel zu hatten und eine positionsgenaue Klemmung während des gesamten Abisolier- und Crimpprozesses gewährleistet. Die Klemmvorrichtung soll einfach, wartungsarm und verschleißarm aufgebaut sein und eine kurze Abmantelung des zu vercrimpenden Kabels ermöglichen. Auch ist es Aufgabe der Erfindung, das Verfahren zur Herstellung einer Crimpverbindung durch Einsatz der erfindungsgemäßen Klemmvorrichtung kostengünstiger durchzuführen.The object of the invention is to provide a clamping device for a crimped electrical cable, which at a low mechanical effort enough force applying the cable and ensuring positionally accurate clamping throughout the stripping and crimping process. The clamping device should be simple, low-maintenance and low-wear construction and allow a short stripping of the cable to be crimped. It is also an object of the invention to carry out the process for producing a crimp connection by using the clamping device according to the invention more cost-effective.

Diese Aufgabe wird mit einer Klemmvorrichtung mit den Merkmalen des Anspruchs 1 und einem Verfahren zur Herstellung einer Crimpverbindung mit einer Crimpmaschine und der erfindungsgemäßen Klemmvorrichtung nach Anspruch 10 gelöst. Vorteilhafte Ausführungen werden in den Unteransprüchen angegeben.This object is achieved with a clamping device having the features of claim 1 and a method for producing a crimp connection with a crimping machine and the clamping device according to the invention according to claim 10. Advantageous embodiments are specified in the subclaims.

Erfindungsgemäß ist die Klemmvorrichtung für eine Crimpmaschine mit dem Crimpwerkzeugkopf über dessen Stirnseitenwand verbunden und mit dem Crimpwerkzeugkopf vertikal bewegbar. Sowohl Klemmvorrichtung als auch Crimpwerkzeugkopf sind dabei mittig in Längsrichtung des zu klemmenden elektrischen Kabels oberhalb des Ambosses und des Frontmessers angeordnet. Lediglich die vertikale Bewegung des Crimpwerkzeugkopfes wird als Antrieb für die Klemmbewegung der Klemmvorrichtung genutzt. Der Crimpwerkzeugkopf und mit ihm die Klemmvorrichtung bewegen sich über eine in der Crimpmaschine angeordnete Exzenterscheibe, die den Hub des Crimpwerkzeugs bestimmt.According to the invention, the clamping device for a crimping machine is connected to the crimping tool head via its front side wall and can be moved vertically with the crimping tool head. Both clamping device and crimping tool head are arranged centrally in the longitudinal direction of the electrical cable to be clamped above the anvil and the front blade. Only the vertical movement of the crimping tool head is used as a drive for the clamping movement of the clamping device. The crimping tool head and with it the clamping device move over an eccentric disc arranged in the crimping machine, which determines the stroke of the crimping tool.

Die Klemmvorrichtung besteht aus mindestens zwei Klemmbacken, einem oberen und einem unteren Klemmbacken. Die Klemmbacken sind über ein oder mehrere Federelemente, beispielsweise Druckfedern, in vertikaler Richtung druckfederbelastet und damit gegenläufig zueinander bewegbar. Bei einer definierten partiellen Drehbewegung der Exzenterscheibe wird die maximale Presskraft der Druckfedern erreicht und das Kabel zwischen den Klemmbacken geklemmt. Ein am Crimpwerkzeug-Grundkörper angebrachter Begrenzungsarm, gegen den sich ein mit einem Stift versehener Klemmbacken beim Aufwärtshub abstützt, öffnet die Klemmvorrichtung während des Aufwärtshubs wieder.The clamping device consists of at least two jaws, an upper and a lower jaws. The jaws are spring-loaded in the vertical direction via one or more spring elements, such as compression springs, and thus movable in opposite directions to each other. In a defined partial rotational movement of the eccentric disc, the maximum pressing force of the compression springs is achieved and the cable clamped between the jaws. A limiter arm attached to the crimping tool body, against which a pin jaw is supported on the upstroke, reopens the clamp during the upstroke.

Das erfindungsgemäße Verfahren zur Herstellung einer Crimpverbindung mit einer Crimpmaschine und mit der erfindungsgemäßen Klemmvorrichtung erfolgt in fünf Arbeitsschritten:

  1. a) In einem ersten Arbeitsschritt, bei dem sich die Crimpmaschine in Grundstellung befindet, wird ein zu bearbeitendes Kabel durch die geöffneten Klemmbacken der Klemmvorrichtung und durch die unmittelbar dahinter befindlichen Kabeldurchführungsöffnungen der Abisoliervorrichtung auf den Auslösesensor der Abisoliervorrichtung geführt.
  2. b) In einem zweiten Arbeitsschritt, ausgelöst durch den Auslösesensor, wird der Crimpwerkzeugkopf in einer vertikalen Abwärtsbewegung in etwa um die Höhe der Klemmbackenöffnung abzüglich der Kabeldicke so weit nach unten gefahren, dass das Kabel zwischen der Oberseite des unteren Klemmbackenfingers und der Unterseite des oberen Klemmbackenfingers mit Presssitz verrutschfest geklemmt ist. Durch das partielle Herunterfahren des Crimpwerkzeugkopfes, der in dieser Position stehen bleibt, wird der druckfederbelastete Klemmbackenfinger des oberen Klemmbackens gegen das zu bearbeitende Kabel in Richtung unterer Klemmbackenfinger gedrückt, das Kabel wird geklemmt.
  3. c) In einem dritten Arbeitsschritt erfolgt der Abisolierprozess durch die Abisoliervorrichtung in bekannter Weise, anschließend wird die Abisoliervorrichtung aus dem Bearbeitungsbereich herausgefahren.
  4. d) In einem vierten Arbeitsschritt erfolgt der eigentliche Crimpprozess, ohne dass das abisolierte Kabel horizontal weiterbewegt werden muss. Die Klemmbacken, die das Kabel unverändert mit Presssitz verrutschfest klemmen, werden gemeinsam mit dem ebenfalls in seiner horizontalen Grundposition verbleibenden Crimpwerkzeugkopf in einem schnellen Hub vertikal in Richtung Amboss bewegt, und das Kabelende wird durch mindestens einen Crimpstempel mit dem dort befindlichen Kontaktelement in bekannter Weise vercrimpt. Der zu vercrimpende Kontakt wird durch die Klemmvorrichtung, die auch als Frontmesserdrücker fungiert, durch das Frontmesser vom Gurt getrennt.
  5. e) In einem fünften Arbeitsschritt sind Crimpwerkzeugkopf und Klemmvorrichtung vertikal in ihre Grundstellung zurückgefahren. Sobald der Stift des unteren Klemmbackens vom Begrenzungsarm wieder erfasst wird, beginnen sich die Klemmbacken zu öffnen und das fertige Kabel mit dem angecrimpten Kontaktelement kann nach Erreichen der Grundstellung entnommen werden. Die Abisoliervorrichtung fährt ebenfalls in ihre Grundstellung und die Crimpmaschine steht wieder bereit zur Ausführung des ersten Arbeitsschrittes a).
The inventive method for producing a crimped connection with a crimping machine and with the clamping device according to the invention is carried out in five steps:
  1. a) In a first step, in which the crimping machine is in the home position, a cable to be processed through the open jaws of the Clamping device and guided by the cable glands located immediately behind the cable stripper on the trigger sensor of the stripping.
  2. b) In a second step, triggered by the trigger sensor, the crimping tool head is moved in a vertical downward movement approximately the height of the jaw opening minus the cable thickness down so far that the cable between the top of the lower jaw finger and the underside of the upper jaw finger is clamped slip-resistant with interference fit. Due to the partial shutdown of the crimping tool head, which remains in this position, the compression spring-loaded jaw fingers of the upper jaw is pressed against the cable to be processed in the direction of the lower jaw fingers, the cable is clamped.
  3. c) In a third step, the stripping process by the stripping in a known manner, then the stripping is moved out of the processing area.
  4. d) In a fourth step, the actual crimping process takes place without the stripped cable having to be moved horizontally. The jaws that clamp the cable slipping unaltered with interference fit are moved together with the remaining in its horizontal position crimping tool head in a fast stroke vertically towards the anvil, and the cable end is crimped by at least one crimping die with the contact element located there in a known manner , The contact to be crimped is separated from the belt by the front knife by means of the clamping device, which also functions as a front knife trigger.
  5. e) In a fifth step crimping tool head and clamping device are moved back vertically into their normal position. Once the pin of the lower jaw is detected by the limiter again, the jaws begin to open and the finished cable with the crimped contact element can be removed after reaching the basic position. The stripping device also moves to its normal position and the crimping machine is again ready for execution of the first step a).

Da die Abisoliervorrichtung unmittelbar an die in Richtung Crimpwerkzeugkopf weisenden Seitenwandungen der Klemmbacken herangefahren werden kann, erfolgt die Abisolierung des Kabelisolationsmaterials unmittelbar neben den Klemmbackenfingern. Das Anbringen der erfindungsgemäßen Klemmvorrichtung direkt auf der Stirnseitenwand des Crimpwerkzeugkopfes, hinter der sich die Crimpstempel befinden, gewährleistet zudem einen Minimalabstand zwischen Klemmbackenfingem und Crimpstempeln. Selbst dünne Kabel können auf diese Weise in den Crimpkrallenbereich eines Kontaktelements problemlos eingeführt und dort vercrimpt werden, ohne dass sich das abisolierte Ende des Kabels in unerwünschter Weise biegen oder spreizen kann, was zu Irritationen beim Crimpprozess führen könnte. Auch ist wegen des kurzen Abstandes der Kabelklemmung zum Kabelende keine gesonderte Zentriereinrichtung zur Stabilität und Ausrichtung des Kabels während des gesamten Bearbeitungsprozesses erforderlich.Since the stripping can be moved directly to the facing towards crimping tool head side walls of the jaws, the stripping of the cable insulation material is carried out immediately adjacent to the jaw fingers. The attachment the clamping device according to the invention directly on the end wall of the Crimpwerkzeugkopfes, behind which are the crimping, also ensures a minimum distance between jaw fingers and Crimpstempeln. Even thin cables can thus easily be inserted and crimped into the crimping claw region of a contact element without the stripped end of the cable being able to undesirably bend or spread, which could lead to irritations in the crimping process. Also, because of the short distance of the cable clamp to the cable end no separate centering device for stability and alignment of the cable during the entire processing process is required.

Während bei einem Kontaktelement mit einer Crimpzonenlänge von 6 mm bei den bekannten Crimpmaschinen die Abmantelungslänge ca. 23 mm beträgt, wird beim Einsatz der erfindungsgemäßen Klemmvorrichtung eine Crimpzonenlänge von ca. 13 mm erreicht, was eine deutliche Verbesserung gegenüber den herkömmlichen Klemmvorrichtungen bedeutet.While the Abmantelungslänge is about 23 mm in a contact element with a Crimpzonenlänge of 6 mm in the known crimping machines, a crimping zone length of about 13 mm is achieved when using the clamping device according to the invention, which means a significant improvement over the conventional clamping devices.

Ein weiterer Vorteil besteht darin, dass die erfindungsgemäße Klemmvorrichtung ohne großen Montageaufwand an jedes andere Crimpwerkzeug mit ähnlichem Aufbau angebaut werden und deshalb als separates Kaufteil zum Nachrüsten älterer Modelle dienen kann.Another advantage is that the clamping device according to the invention can be attached to any other crimping tool of similar construction without great installation effort and can therefore serve as a separate purchased part for retrofitting older models.

Die Erfindung wird im folgenden noch anhand des in den Zeichnungen dargestellten Ausführungsbeispiels näher erläutert. Es zeigen

  • Fig. 1 Eine Teilvergrößerung der erfindungsgemäßen Klemmvorrichtung mit allen wesentlichen Funktionselementen der erfindungsgemäßen Crimpmaschine in einer Vorderansicht mit geklemmtem Kabel,
  • Fig. 2 die Vorderansicht der erfindungsgemäßen Crimpmaschine während des ersten Arbeitsschrittes,
  • Fig. 3 die Vorderansicht der erfindungsgemäßen Crimpmaschine während des zweiten Arbeitsschrittes,
  • Fig. 4 die Vorderansicht der erfindungsgemäßen Crimpmaschine während des dritten Arbeitsschrittes,
  • Fig. 5 die Vorderansicht der erfindungsgemäßen Crimpmaschine während des vierten Arbeitsschrittes,
  • Fig. 6 die Vorderansicht der erfindungsgemäßen Crimpmaschine während des fünften Arbeitsschrittes.
The invention will be explained in more detail below with reference to the embodiment shown in the drawings. Show it
  • Fig. 1 A partial enlargement of the clamping device according to the invention with all essential functional elements of the crimping machine according to the invention in a front view with clamped cable,
  • Fig. 2 the front view of the crimping machine according to the invention during the first step,
  • Fig. 3 the front view of the crimping machine according to the invention during the second step,
  • Fig. 4 the front view of the crimping machine according to the invention during the third step,
  • Fig. 5 the front view of the crimping machine according to the invention during the fourth step,
  • Fig. 6 the front view of the crimping machine according to the invention during the fifth step.

Die in Fig. 1 gezeigte Klemmvorrichtung 10 ist für eine Crimpmaschine 1 bestimmt, aufweisend einen Crimpwerkzeugkopf 2, einen Crimpwerkzeug-Grundkörper 3 mit einem Amboss 4 und einem dem Amboss 4 vorgelagerten Frontmesser 21, weiter aufweisend eine Abisoliervorrichtung 5, eine Kontaktelementzuführvorrichtung 6 sowie ein Kupplungsteil 7 zum kuppelnden Verbinden der Crimpmaschine 1 mit dem Crimpwerkzeugkopf 2, der vertikal bewegbar ist zur Ausführung eines Crimphubs. Der Crimpwerkzeugkopf 2 weist eine Stirnseitenwand 9 auf, in Richtung der ein zu vercrimpendes Kabel 8 entlang eines Kabelweges 8' zuführbar ist. Die Klemmvorrichtung 10 klemmt das zu bearbeitende elektrische Kabel im Betriebszustand sowohl während des Abisoliervorgangs als auch während des Crimpvorgangs. Erfindungsgemäß ist die Klemmvorrichtung 10 mit dem Crimpwerkzeugkopf 2 über dessen Stirnseitenwand 9 verbunden und gemeinsam mit dem Crimpwerkzeugkopf 2 vertikal verfahrbar. Dabei sind vorzugsweise die Klemmvorrichtung 10 und/oder der Crimpwerkzeugkopf 2 mittig in Längsrichtung des Kabelweges 8' oberhalb des Ambosses 4 und des Frontmessers 21 angeordnet. Für den starren Sitz der Klemmvorrichtung 10 auf dem Crimpwerkzeugkopf 2 können in der Stirnseitenwand 9 des Crimpwerkzeugkopfes 2 Rastausnehmungen oder Bohrungen vorgefertigt sein, die eine schnelle Schraub-, Steck- und/oder Klemmverbindung mit dem Crimpwerkzeugkopf 2 bzw. seiner Stirnseitenwand 9 ermöglichen. Zwingend erforderlich sind diese jedoch nicht.In the Fig. 1 The clamping device 10 shown is intended for a crimping machine 1, comprising a crimping tool head 2, a crimping tool main body 3 with an anvil 4 and an anvil 4 upstream front blade 21, further comprising a stripping 5, a Kontaktelementzuführvorrichtung 6 and a coupling part 7 for coupling the coupling Crimping machine 1 with the crimping tool head 2, which is vertically movable to perform a crimping stroke. The crimping tool head 2 has an end wall 9, in the direction of which a cable 8 to be crimped can be fed along a cable path 8 '. The clamping device 10 clamps the electrical cable to be processed in the operating state both during the stripping and during the crimping process. According to the invention, the clamping device 10 is connected to the crimping tool head 2 via its front side wall 9 and can be moved vertically together with the crimping tool head 2. In this case, preferably the clamping device 10 and / or the crimping tool head 2 are arranged centrally in the longitudinal direction of the cable path 8 'above the anvil 4 and the front blade 21. For the rigid seat of the clamping device 10 on the crimping tool head 2, 2 recesses or holes can be prefabricated in the front wall 9 of the crimping tool head, which allow a quick screw, plug and / or clamp connection with the crimping tool head 2 and its end wall 9. However, these are not absolutely necessary.

Die Klemmvorrichtung 10 weist mindestens zwei Klemmbacken, einen oberen Klemmbacken 12 und einen unteren Klemmbacken 11, auf, die über ein oder mehrere Federelemente, beispielsweise Druckfedern 13, gegenläufig zueinander in vertikaler Richtung bewegbar sind. Die Klemmbacken 11, 12 sind in einem quaderförmigen, zumindest nach unten offenen Gehäuse 14 beweglich angeordnet. Das Gehäuse 14 ist auf seiner Deckenseite 15 mit zwei parallel zueinander und senkrecht zur Längsrichtung des Kabels 8 angeordneten Schlitzen 16, 17 versehen, wie weiter unten ausführlich dargestellt. Der obere Klemmbacken 12 umfasst einen Klemmbackenarm 25 und einen in Richtung unterer Klemmbacken 11 rechtwinkelig abgebogenen Klemmbackenfinger 22, wobei die Fingerunterseite 23 das Kabel 8 während des gesamten Bearbeitungsprozesses klemmend beaufschlagt. Der untere Klemmbacken 11 weist einen im Wesentlichen quaderförmigen Klemmbackenarm 24 mit einer Unterkante 29, eine Armverlängerung 26, die in etwa halb so breit ist wie der Klemmbackenarm 24 und die etwa der Breite des Klemmbackenarms 25 entspricht sowie einen von der Armverlängerung 26 rechtwinkelig in Richtung oberer Klemmbacken 12 abgebogenen Klemmbackenfinger 27 auf. In einem Hohlraum des Klemmbackenarms 24 oberhalb der Unterkante 29 sind die Druckfedern 13 befestigt. An jedem Klemmbacken 11, 12 im Bereich der Klemmbackenarme 24, 25 ist mindestens je ein Stift 18, 19 mit unterschiedlicher Länge angebunden, wobei der längere Stift 18 des unteren Klemmbackens 11 den ersten Schlitz 16 in der Deckenseite 15 des Gehäuses 14 durchgreift und der kürzere Stift 19 des oberen Klemmbackens 12 den zweiten Schlitz 17 durchgreift, wobei die Schlitze 16, 17, mit zur Führung der Klemmbacken 11, 12 bei der Ausführung der Vertikalbewegung des Crimpwerkzeugkopfes 2 und der Klemmvorrichtung 10 dienen. Die Stifte 18,19 bilden die Endanschläge für die offene Position der Klemmbacken 11, 12.The clamping device 10 has at least two clamping jaws, an upper jaw 12 and a lower jaw 11, on which one or more spring elements, such as compression springs 13, are movable in opposite directions in the vertical direction. The jaws 11, 12 are arranged in a cuboid, at least downwardly open housing 14 movable. The housing 14 is provided on its ceiling side 15 with two parallel to each other and perpendicular to the longitudinal direction of the cable 8 slots 16, 17, as shown in detail below. The upper jaw 12 includes a jaw arm 25 and a jaw finger 22 bent at right angles toward lower jaws 11, the finger bottom 23 clamping the cable 8 during the entire machining process applied. The lower jaw 11 has a substantially cuboid jaw arm 24 with a lower edge 29, an arm extension 26 which is approximately half as wide as the Klemmbackenarm 24 and which corresponds approximately to the width of the jaw arm 25 and one of the arm extension 26 at right angles in the upper direction Jaws 12 bent jaw fingers 27 on. In a cavity of the Klemmbackenarms 24 above the lower edge 29, the compression springs 13 are attached. At each jaw 11, 12 in the region of the jaw arms 24, 25 is at least one pin 18, 19 connected with different lengths, the longer pin 18 of the lower jaw 11, the first slot 16 in the ceiling side 15 of the housing 14 passes through and the shorter Pin 19 of the upper jaw 12 passes through the second slot 17, wherein the slots 16, 17, serve to guide the jaws 11, 12 in the execution of the vertical movement of the crimping tool head 2 and the clamping device 10. The pins 18,19 form the end stops for the open position of the jaws 11, 12th

Am Grundkörper 3 ist in etwa halber Höhe in diesem Ausführungsbeispiel horizontal zur Längsrichtung des Kabels 8 ein L-förmiger Begrenzungsarm 20 angeordnet, der in seiner Längserstreckung die Seitenwand 33 des Crimpwerkzeugkopfes 2 und die Klemmvorrichtung 10 übergreift und in etwa ab dem zweiten Drittel seiner Länge rechtwinkelig in Richtung Deckenseite 15 der Klemmvorrichtung 10 abgebogen ist, wobei er die Deckenseite 15 maximal zur Hälfte mit Spiel übergreift und wobei er in seinem Endbereich direkt oberhalb des längeren Stiftes 18 mit diesem in Kontakt steht. Der untere Klemmbackenarm 24 stützt sich beim Aufwärtshub über den am unteren Klemmbacken 11 angeformten längeren Stift 18 am Begrenzungsarm 20 ab und öffnet auf diese Weise die Klemmbackenfinger 22, 27 während des Aufwärtshubs wieder.On the base body 3, an L-shaped delimiting arm 20 is arranged at approximately half the height in this embodiment horizontally to the longitudinal direction of the cable 8, which engages in its longitudinal extent, the side wall 33 of the crimping tool head 2 and the clamping device 10 and approximately at right angles from about the second third of its length in the direction of the ceiling side 15 of the clamping device 10 is bent, wherein it overlaps the ceiling side 15 a maximum of half with play and where it is in its end directly above the longer pin 18 with this in contact. The lower jaw arm 24 is supported in the upstroke over the formed on the lower jaw 11 longer pin 18 on the limiting arm 20 and opens in this way the jaw fingers 22, 27 during the upstroke again.

In den Figuren 2 bis 6 ist das Verfahren zur Herstellung einer Crimpverbindung mit einer Crimpmaschine 1 und mit der erfindungsgemäßen Klemmvorrichtung 10 in fünf Arbeitsschritten dargestellt, die nacheinander wie folgt ablaufen:

  • In einem ersten Arbeitsschritt gemäß Fig. 2, bei dem sich die Crimpmaschine 1 in Grundstellung befindet, wird ein zu bearbeitendes Kabel 8 auf dem Kabelweg 8' durch die Klemmbackenöffnung 41 der geöffneten Klemmbacken 11, 12 der Klemmvorrichtung 10 und durch die unmittelbar dahinter befindlichen Kabeldurchführungsöffnungen 32, 32' der Abisoliervorrichtung 5 bis auf den Auslösesensor 30 der Abisoliervorrichtung geführt, wobei die Klemmbackenöffnung in diesem Ausführungsbeispiel ca. 5 mm beträgt. Während des ersten Arbeitsschrittes beaufschlagt der Begrenzungsarm 20 den Stift 18 des unteren Klemmbackenarms 24 am untersten Ende des ersten Schlitzes 16 und hält den unteren Klemmbackenfinger 27 dadurch in der Grundstellung. Auch der obere Klemmbackenarm 25 befindet sich in Grundstellung, wobei sein Stift 19 am unteren Ende des zweiten Schlitzes 17 positioniert ist.
In the FIGS. 2 to 6 the method for producing a crimped connection with a crimping machine 1 and with the clamping device 10 according to the invention is shown in five working steps, which proceed in succession as follows:
  • In a first step according to Fig. 2 in which the crimping machine 1 is in the home position, a cable 8 to be processed on the Kabelweg 8 'through the jaw opening 41 of the open jaws 11, 12 of the clamping device 10 and through the directly behind it located cable glands 32, 32' of the stripping 5 to led to the trigger sensor 30 of the stripping, wherein the jaw opening in this embodiment is about 5 mm. During the first step, the limiting arm 20 acts on the pin 18 of the lower Jaw arm 24 at the lowermost end of the first slot 16 and thereby keeps the lower jaw finger 27 in the home position. Also, the upper jaw arm 25 is in the home position, with its pin 19 is positioned at the lower end of the second slot 17.

In einem zweiten Arbeitsschritt (Fig. 3) wird der Crimpwerkzeugkopf 2 in einer vertikalen Abwärtsbewegung, die etwa der Höhe der Klemmbackenöffnung 41 beim Einführen des Kabels 8 entspricht, so weit nach unten gefahren, dass das Kabel 8 zwischen der Oberseite 28 des unteren Klemmbackenfingers 27 und der Unterseite 23 des oberen Klemmbackenfingers 22 mit Presssitz verrutschfest geklemmt ist. Der Crimpwerkzeugkopf 2 bleibt in dieser Position stehen. Der Abwärtshub beträgt im vorliegenden Ausführungsbeispiel < 5mm. Der Stift 18 am unteren Klemmbackenarm 24 bewegt sich damit relativ im ersten Schlitz 16 des Klemmbackengehäuses 14 um < 5mm nach oben. Damit verbleibt der untere Klemmbackenarm 24 in der Position des ersten Arbeitsschrittes durch den stationär befestigten Begrenzungsarm 20. Die Klemmung des Kabels 8 erfolgt durch den federgestützten Klemmmechanismus, insbesondere durch die Druckfedern 13. Nun erfolgt der Abisolierprozess durch die Abisoliervorrichtung 5 in bekannter Weise.In a second step ( Fig. 3 ), the crimping tool head 2 is moved in a vertical downward movement, which corresponds approximately to the height of the jaw opening 41 during insertion of the cable 8, so far down that the cable 8 between the top 28 of the lower jaw finger 27 and the bottom 23 of the upper jaw finger 22nd is clamped slip-resistant with interference fit. The crimping tool head 2 stops in this position. The downward stroke is <5mm in the present embodiment. The pin 18 on the lower jaw arm 24 thus moves relative to the first slot 16 of the jaw housing 14 by <5mm upwards. Thus, the lower jaw arm 24 remains in the position of the first step by the stationary attached limiter arm 20. The clamping of the cable 8 is effected by the spring-supported clamping mechanism, in particular by the compression springs 13. Now, the stripping is carried out by the stripping 5 in a known manner.

In einem dritten Arbeitsschritt wird die Abisoliervorrichtung 5 aus dem Bearbeitungsbereich herausgefahren (Fig. 4).In a third step, the stripping 5 is moved out of the processing area ( Fig. 4 ).

In einem vierten Arbeitsschritt (Fig. 5) erfolgt die Zuführung eines Kontaktelements (nicht dargestellt) von der Kontaktelementzuführvorrichtung 6 auf den Amboss 4 und im unmittelbaren Anschluss der eigentliche Crimpprozess. Die Klemmbacken 11, 12, die das Kabel 8 unverändert mit Presssitz verrutschfest klemmen, werden gemeinsam mit dem Crimpwerkzeugkopf 2 in einem schnellen Hub vertikal in Richtung Amboss 4 bewegt, und das Kabelende wird durch mindestens einen Crimpstempel (nicht dargestellt) mit einem Kontaktelement (nicht dargestellt) auf dem Amboss 4 in bekannter Weise vercrimpt. Gleichzeitig wird das zu vercrimpende elektrische Kontaktelement (nicht dargestellt) durch die Klemmvorrichtung, die auch als Frontmesserdrücker fungiert, durch das Frontmesser 21 vom Gurt getrennt. Durch den konstanten Druck der Druckfedern13 bleiben die Klemmbackenfinger 22, 27 gleich weit voneinander beabstandet, so dass eine Lockerung des geklemmten Kabels 8 während des Crimpprozesses nicht erfolgen kann.In a fourth step ( Fig. 5 ), the supply of a contact element (not shown) from the Kontaktelementzuführvorrichtung 6 on the anvil 4 and in the immediate following the actual crimping process. The jaws 11, 12, the cable clamp 8 unaltered with interference fit slidably are moved together with the crimping tool head 2 in a fast stroke vertically towards anvil 4, and the cable end (not shown) by at least one crimping die with a contact element (not shown) on the anvil 4 crimped in a known manner. At the same time, the electrical contact element (not shown) to be crimped is separated from the belt by the front knife 21 by the clamping device, which also functions as a front knife trigger. Due to the constant pressure of the compression springs 13, the jaw fingers 22, 27 remain equidistant from each other, so that loosening of the clamped cable 8 during the crimping process can not take place.

In einem fünften Arbeitsschritt (Fig. 6) wird der Crimpwerkzeugkopf 2 in einem Hub vertikal nach oben bis zur Nullstellung bzw. bis zum oberen Totpunkt verfahren, Stift 18 wird dabei vom Begrenzungsarm 20 erfasst und bis zum untersten Anschlagpunkt im ersten Schlitz 16 bewegt, wobei sich der obere Klemmbackenarm 25 zu öffnen beginnt, sobald Stift 18 die Stiftposition des zweiten bzw. dritten Arbeitsschrittes überschritten hat. Damit befindet sich die Crimpmaschine 1 wieder in ihrer Grundstellung, das fertige Kabel 8 mit dem angecrimpten Kontaktelement kann entnommen werden und die Crimpmaschine steht erneut bereit zur Ausführung des ersten Arbeitsschrittes gemäß Fig. 2.In a fifth step ( Fig. 6 ) the crimping tool head 2 is moved in a stroke vertically up to the zero position or to the top dead center, pin 18 is thereby detected by the limiting arm 20 and moved to the lowest stop point in the first slot 16, wherein the upper jaw arm 25 begins to open as soon as pin 18 has exceeded the pin position of the second or third work step. This is located the crimping machine 1 back to its normal position, the finished cable 8 with the crimped contact element can be removed and the crimping machine is again ready for execution of the first step according to Fig. 2 ,

Die vertikale Bewegung der Klemmvorrichtung 10 erfolgt über drei Exzenterpositionen 38, 39, 40 einer in der Crimpmaschine angeordneten Exzenterscheibe (nicht dargestellt), die den Hub des Crimpwerkzeugs bestimmt. In einer ersten Exzenterposition 38 gemäß Fig. 2 befinden sich Crimpwerkzeugkopf 2 und Klemmvorrichtung 10 in Grundstellung. Die Klemmbacken 11 und 12 sind geöffnet. In einer zweiten Exzenterposition 39 hat bereits eine partielle Bewegung der Exzenterscheibe stattgefunden. In diesem Bereich erfolgt die Klemmung des Kabels 8. Im Ausführungsbeispiel gemäß Fig. 4 hat sich die Exzenterscheibe um ca. 45° gedreht. Der Drehwinkel kann jedoch zwischen 10 und 120° liegen, je nach Kabeldicke und gewünschter Presskraft. In einer dritten Exzenterposition 40 hat die Exzenterscheibe den maximalen Weg von 180° gemäß Fig. 5 zurückgelegt, das Kontaktelement (nicht dargestellt) ist mit dem Kabel 8 vercrimpt, die Exzenterscheibe bewegt sich wieder in ihre Ausgangsposition 38 zurück (Fig. 6), die Klemmbacken 11,12 sind wieder geöffnet.The vertical movement of the clamping device 10 via three eccentric positions 38, 39, 40 of an arranged in the crimping eccentric disc (not shown), which determines the stroke of the crimping tool. In a first eccentric position 38 according to Fig. 2 are crimping tool head 2 and clamping device 10 in the basic position. The jaws 11 and 12 are open. In a second eccentric position 39, a partial movement of the eccentric disc has already taken place. In this area, the clamping of the cable takes place 8. In the embodiment according to Fig. 4 the eccentric disc has turned by approx. 45 °. However, the angle of rotation can be between 10 and 120 °, depending on the cable thickness and the desired pressing force. In a third eccentric position 40, the eccentric disc has the maximum travel of 180 ° according to Fig. 5 moved back, the contact element (not shown) is crimped with the cable 8, the eccentric moves back to its original position 38 back ( Fig. 6 ), the jaws 11,12 are open again.

Der Vorschub der Kontaktelementzuführvorrichtung 6 wird über eine an der der Seitenwand 33 gegenüberliegenden Seitenwand 34 befestigten Platte 35 dadurch gesteuert wird, dass die Platte 35 eine kurvige Stufung 37 in der Seitenkante 36 aufweist und mit einer Kurvenrolle 31 im Eingriff steht.The advance of the contact element feed device 6 is controlled by a plate 35 fastened to the side wall 33 opposite the side wall 33 in that the plate 35 has a curved step 37 in the side edge 36 and is engaged with a cam roller 31.

Es liegt im Schutzbereich der Erfindung, die Druckfedern 13 nicht im oberen Klemmbackenarm sondern auf der der Unterkante 29 des unteren Klemmbackenarms 24 zugewandten Seite des oberen Klemmbackenfingers 22 zu befestigen.It is within the scope of the invention to fasten the compression springs 13 not in the upper jaw arm but on the side of the upper jaw finger 22 facing the lower edge 29 of the lower jaw arm 24.

Es liegt auch im Schutzbereich der Erfindung, in die Oberseite 28 des unteren Klemmbackenfingers 27 mindestens eine Bohrung einzubringen, in die ein Stift positioniert eingesetzt ist und der Stift in Richtung Fingerunterseite 23 des oberen Klemmbackenarms 25 weist. Der Stift bildet die der Armverlängerung 26 des unteren Klemmbackenarms 24 gegenüberliegende seitliche Begrenzung für die Klemmbackenöffnung 41. Je nach Stärke des zu verarbeitenden Kabels dient er als Positionierungshiffe für das Kabel 8 und sichert es gegen ein seitliches Wegrutschen aus der Klemmbackenöffnung 41.It is also within the scope of the invention to introduce into the top 28 of the lower jaw finger 27 at least one bore into which a pin is inserted in position and the pin faces the finger bottom 23 of the upper jaw arm 25. The pin forms the arm extension 26 of the lower jaw arm 24 opposite lateral boundary for the jaw opening 41. Depending on the strength of the cable to be processed, it serves as Positionierungshiffe for the cable 8 and secures it against slipping sideways from the jaw opening 41st

Es liegt weiterhin im Schutzbereich der Erfindung, dass der Auslösesensor ein induktiver Nährungssensor ist und dass das zu bearbeitende Kabel 8 nach dem Einführen in die Kabeldurchführungsöffnungen 32, 32' der Abisoliervorrichtung 5 auf einen ersten Sensor drückt, wobei sich dieser nach hinten bewegt und dabei den Auslösesensor aktiviert, der vorzugsweise rechtwinklig zum ersten Sensor angeordnet ist. Über diese indirekte Aktivierung des Auslösesensors lässt sich die Einstecktiefe des abzuisolierenden Kabels 8 noch präziser steuern.It is still within the scope of the invention that the trigger sensor is an inductive proximity sensor and that the cable to be processed 8 presses after insertion into the cable duct openings 32, 32 'of the stripping 5 on a first sensor, which moves backwards while the Tripping sensor activated, which is preferably arranged at right angles to the first sensor. By means of this indirect activation of the trigger sensor, the insertion depth of the cable 8 to be stripped can be controlled even more precisely.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

  • 1. Crimpmaschine1st crimping machine
  • 2. Crimpwerkzeugkopf2. Crimping tool head
  • 3. Crimpwerkzeug-Grundkörper3. Crimping tool basic body
  • 4. Amboss4th anvil
  • 5. Abisoliervorrichtung5. stripping device
  • 6. Kontaktelementzuführvorrichtung6. Kontaktelementzuführvorrichtung
  • 7. Kupplungsteil7. coupling part
  • 8. Kabel8. Cable
  • 8'. Kabelweg8th'. Kabelweg
  • 9. Stirnseitenwand9. front side wall
  • 10. Klemmvorrichtung10. Clamping device
  • 11. Unterer Klemmbacken11. Lower jaws
  • 12. Oberer Klemmbacken12. Upper jaws
  • 13. Druckfedern13. compression springs
  • 14. Gehäuse14. Housing
  • 15. Deckenseite15. Ceiling side
  • 16. Erster Schlitz (für Stift 18)16. First slot (for pin 18)
  • 17. Zweiter Schlitz (für Stift 19)17. Second slot (for pin 19)
  • 18. Stift (lang)18th pin (long)
  • 19. Stift (kurz)19. pen (short)
  • 20. Begrenzungsarm20. Limiting arm
  • 21. Frontmesser21. Front knife
  • 22. Oberer Klemmbackenfinger22. Upper jaw finger
  • 23. Fingerunterseite (des oberen Klemmbackenarms 25)23. Finger Bottom (Upper Jaw Arm 25)
  • 24. Unterer Klemmbackenarm24. Lower jaw arm
  • 25. Oberer Klemmbackenarm25. Upper jaw arm
  • 26. Armverlängerung (des unteren Klemmbackenarms)26. Arm extension (lower jaw arm)
  • 27. Unterer Klemmbackenfinger27. Lower jaw finger
  • 28. Oberseite (des unteren Klemmbackenfingers 27)28. top (lower jaw finger 27)
  • 29. Unterkante (der unteren Klemmbackenarms 24)29. Lower edge (lower jaw arm 24)
  • 30. Auslösesensor30. Trigger sensor
  • 31. Kurvenrolle31. Cam follower
  • 32. 32'. Kabeldurchführungsöffnungen32nd 32 '. Cable entry openings
  • 33. Seitenwand des Crimpwerkzeugkopfes (rechts)33. Sidewall of crimping tool head (right)
  • 34. Seitenwand des Crimpwerkzeugkopfes (links)34. Side wall of the crimping tool head (left)
  • 35. Platte35th plate
  • 36. Seitenkante (der Platte 35)36. side edge (plate 35)
  • 37. Stufung37. grading
  • 38. Exzenterposition (erste)38. eccentric position (first)
  • 39. Exzenterposition (zweite)39. eccentric position (second)
  • 40. Exzenterposition (dritte)40th eccentric position (third)
  • 41. Klemmbackenöffnung41. Jaw opening

Claims (18)

  1. A clamping device for a crimping machine (1), with
    • a crimping tool head (2) with an end face wall (9), in the direction of which a cable (8) that is to be crimped can be fed along a cable path (8'),
    • a crimping tool base body (3) with an anvil (4) and a front blade (21),
    • an insulation stripping device (5),
    • a contact element feed device (6), and
    • a coupling part (7) for the coupling connection of the crimping machine (1) with the crimping tool head (2), wherein
    the clamping device (10) in the operating state clamps the electrical cable (8) that is to be processed, both during the insulation stripping process and also during the crimping process,
    characterised in that,
    the clamping device (10) is connected with the crimping tool head (2) via its end face wall (9), and can be moved vertically with the crimping tool head (2), and in that the clamping device (10) and/or the crimping tool head (2) are arranged centrally in the longitudinal direction of the cable path (8') above the anvil (4) and the front blade (21).
  2. The clamping device in accordance with patent claim 1,
    characterised in that,
    the clamping device (10) is rigidly connected with the crimping tool head (2), preferably by means of a releasable connection, for example, a screw, plug and/or clamp connection.
  3. The clamping device in accordance with patent claim 1 or 2,
    characterised in that,
    the clamping tool (10) has at least one upper clamping jaw (12) and one lower clamping jaw (11), which can be moved, via one or a plurality of compression springs (13), in opposite directions to one another in the vertical direction.
  4. The clamping device in accordance with patent claim 3,
    characterised in that,
    the clamping jaws (11, 12) are arranged such that they can be moved in a rectangular housing (14), open at least in the downward direction, and the housing (14) on its cover face (15) has two slots (16, 17) arranged parallel to one another and at right angles to the longitudinal direction of the cable path (8').
  5. The clamping device in accordance with one of the patent claims 3 to 4,
    characterised in that,
    the upper clamping jaw (12) comprises a clamping jaw arm (25) and a clamping jaw finger (22) bent at right angles in the direction of the lower clamping jaw (11), wherein
    the lower face of the finger (23) applies pressure onto the cable (8) in a clamping manner during the whole of the process.
  6. The clamping device in accordance with one of the patent claims 3 to 5,
    characterised in that,
    the lower clamping jaw (11) comprises an essentially rectangular clamping jaw arm (24), with a lower edge (29), an arm extension (26), which is approximately half as wide as the clamping jaw arm (24), and which approximately corresponds to the width of the clamping jaw arm (25), together with a clamping jaw finger (27) bent at right angles to the arm extension (26) in the direction of the upper clamping jaw (12).
  7. The clamping device in accordance with one of the patent claims 3 to 6,
    characterised in that,
    the compression springs (13) are attached in a cavity of the clamping jaw arm (24) above the lower edge (29).
  8. The clamping device in accordance with one of the patent claims 3 to 7,
    characterised in that,
    on each clamping jaw (11, 12) in the region of the clamping jaw arms (24, 25) is attached at least one pin (18, 19) in each case, with different lengths,
    wherein
    the longer pin (18) of the lower clamping jaw (11) passes through the first slot (16), and the shorter pin (19) of the upper clamping jaw (12) passes through the second slot (17), and wherein
    the pins (18, 19) form the end stops for the open position of the clamping jaws (11, 12).
  9. The clamping device in accordance with one of the patent claims 3 to 8,
    characterised in that,
    an L-shaped limiter arm (20) is arranged on the base body (3) at approximately half height, horizontal to the longitudinal direction of the cable (8), which arm in its longitudinal extent overlaps the sidewall (33) of the crimping tool head (2) and the clamping device (10), and is bent approximately from the second third of its length at right angles in the direction of the cover face (15) of the clamping device (10), wherein
    it overlaps a maximum of half the cover face (15), and wherein
    the end region of the arm stands directly above the pin (18) in touching contact with the latter, and wherein
    during the upward stroke the lower clamping jaw arm (24) is supported via the pin (18) formed on the lower clamping jaw (11), and in this manner opens the clamping jaw fingers (22, 27) during the upward stroke.
  10. A method for the manufacture of a crimped joint with a crimping machine (1), and with
    the inventive clamping device (10) in accordance with patent claim 3, wherein
    the following operational steps occur in sequence:
    a) in a first operational step, in which the crimping machine (1) is located in its initial position, a cable (8) that is to be processed is fed on the cable path (8') through the clamping jaw aperture (41) of the open clamping jaws (11, 12) of the clamping device (10) and through the cable feed-through openings (32, 32') of the insulation stripping device (5) up to a sensor, wherein
    the triggering sensor (30), directly or indirectly triggers a second operational step;
    b) in the second operational step the crimping tool head (2) is traversed downward in a vertical downward movement by approximately the height of the clamping jaw aperture (41) less the cable thickness, to the extent that the cable (8) is clamped between the upper face (28) of the lower clamping jaw finger (27) and the lower face (23) of the upper clamping jaw finger (22) in a press fit such that it cannot slip, wherein
    immediately after this the insulation stripping process is undertaken by the insulation stripping device (5) in a manner of known art;
    c) in a third operational step the insulation stripping device (5) is traversed out of the processing region;
    d) in a fourth operational step an electrical contact element (not represented) is fed onto the anvil (4) by the contact element feed device (6), and immediately after this the actual crimping process is undertaken, without any horizontal movement of the stripped cable (8), wherein the clamping jaws (11, 12), which continue to clamp the cable (8) with a press fit such that it cannot slip, are moved together with the crimping tool head in a rapid stroke vertically in the direction of the anvil (4), and wherein
    the cable end (not represented) is crimped together with the contact element (not represented) by means of at least one crimping stamp (not represented) in a manner of known art, and wherein
    at the same time the contact element that is to be crimped (not represented) is separated from the belt by the front blade (21);
    e) in a fifth operational step the crimping machine is traversed back into its initial position, at the same time the limiter arm (20) limits the upward movement of the lower clamping jaw arm (24), the clamping jaws (11, 12) open, the finished cable (8) with the crimped-on contact element (not represented) can be removed, and the crimping machine (1) is once again ready to execute the first operational step a).
  11. The method in accordance with patent claim 10,
    characterised in that,
    during the first operational step a) the limiter arm (20) impinges against the pin (18) of the lower clamping jaw arm (24) at the lowermost end of the first slot (16) and by this means retains the lower clamping jaw finger (27) in its initial position, wherein
    at the same time the clamping jaw arm (25) is also located in its initial position, and wherein
    its pin (19) is positioned at the lower end of the second slot (17).
  12. The method in accordance with patent claim 10 or 11,
    characterised in that,
    during the second operational step b) the lower clamping jaw arm (24) remains in the position of the first operational step by means of the stationary attached limiter arm (20), wherein
    the pin (18) in the first slot (16) is guided upward by the same amount as that which the upper clamping jaw arm (25) is to be moved onto the cable (8), and clamps the latter.
  13. The method in accordance with patent claim 12,
    characterised in that,
    the upper clamping jaw finger (22), which is loaded by a compression spring, is pressed against the cable (8) that is to be processed in the direction of the lower clamping jaw finger (27), and the clamping of the cable (8) is undertaken by the spring-assisted clamping mechanism, in particular by the compression springs (13).
  14. The method in accordance with one of the preceding patent claims,
    characterised in that,
    during the third operational step c) the clamping device (10) remains in the same position as after execution of the second operational step b).
  15. The method in accordance with one of the preceding patent claims,
    characterised in that,
    during the fourth operational step d) the cable (8) that is to be processed remains clamped during the whole operational step by the spring force of the compression springs (13), and no loosening of the clamped cable (8) can take place during the crimping process.
  16. The method in accordance with one of the preceding patent claims,
    characterised in that,
    during the fifth operational step the crimping tool head (2) is traversed vertically upward in a stroke, at the same time the pin (18) arranged on the lower clamping jaw (11) is collected by the limiter arm (20) and moved as far as the lowermost stop point in the first slot (16), wherein
    the upper clamping jaw arm (25) starts to open as soon as the pin (18) arranged on the lower clamping jaw (11) has moved past the pin position of the second and/or third operational step.
  17. The method in accordance with one of the preceding patent claims,
    characterised in that,
    the vertical movement of the clamping device (10) is undertaken via three eccentric positions (38, 39, 40) of an eccentric disk (not represented) arranged in the crimping machine (1), which determines the stroke of the crimping tool, wherein
    in a first eccentric position (38) the crimping tool head (2) and clamping device (10) are located in their initial positions, in a second eccentric position (39) a partial movement of the eccentric disk (not represented) has already taken place and the clamping of the cable (8) has been undertaken, and in a third eccentric position (40) the eccentric disk (not represented) has covered the maximum path of 180°.
  18. The method in accordance with one of the preceding patent claims,
    characterised in that,
    the feed of the contact element feed device (6) is controlled via a plate (35) attached to a sidewall (34) that is located opposite to the sidewall (33), such that the plate (35) has a curved gradation (37) in its side edge (36), and is in engagement with a cam roller (31).
EP07789419.4A 2006-06-16 2007-06-14 Clamping apparatus for a crimping machine and method for producing a crimped connection with a crimping machine and the clamping apparatus according to the invention Not-in-force EP2030291B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH9952006 2006-06-16
PCT/IB2007/001590 WO2007144752A2 (en) 2006-06-16 2007-06-14 Clamping apparatus for a crimping machine and method for producing a crimped connection with a crimping machine and the clamping apparatus according to the invention

Publications (2)

Publication Number Publication Date
EP2030291A2 EP2030291A2 (en) 2009-03-04
EP2030291B1 true EP2030291B1 (en) 2015-09-16

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Country Status (3)

Country Link
US (1) US8544172B2 (en)
EP (1) EP2030291B1 (en)
WO (1) WO2007144752A2 (en)

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US8544172B2 (en) 2013-10-01
WO2007144752A2 (en) 2007-12-21
US20090205205A1 (en) 2009-08-20
EP2030291A2 (en) 2009-03-04
WO2007144752A3 (en) 2008-03-20

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