EP2463969A2 - Plier head for crimping pliers - Google Patents

Abstract

The head (18) has a positioner (6) comprising accommodators whose width is larger than distance between two forging dies. The forging dies press a connector. The accommodators have a predetermined position and/or orientation behind the forging dies in two operating positions of the positioner, respectively. The positioner is formed as a turret. The connector includes a crimping area, which is formed with a stripped cable end in the forging dies during a crimping operation and formed by a pair of die halves.

Description

TECHNICAL FIELD OF THE INVENTION

The invention relates to a pliers head for a pressing pliers, by means of which a workpiece such as a plug, in particular with an electrical conductor end, can be pressed. Here, the pressing can be done by manual actuation, hydraulic actuation, actuation via an electric actuator or by any other actuator.

STATE OF THE ART

Generic pliers heads are used in pressing tongs, which are designed in particular as so-called "crimping pliers" and used for pressing a connector, contact or plug (hereinafter "plug") with a partially stripped conductor end. During a crimping process, the plug is plastically deformed and pressed against the inner conductor end, whereby on the one hand an electrical contact is made and on the other hand the most permanent connection between the plug and the conductor end is created.

It is known to equip a generic pressing tongs with a so-called positioner, which is also referred to as a "locator". Such a positioner serves the functionally correct arrangement of the plug relative to the pliers head, in particular for specifying the correct axial position of the plug relative to the conductor end and / or for coaxial alignment of the plug to the conductor end. In this case, the positioner ensures that at the beginning of the pressing process, the plug is already positioned correctly against a die of the pliers head. It is also possible that the positioner secures the relative position and orientation of the plug relative to the die and the conductor end during the actual crimping process during the plastic deformation of the plug.

With regard to the basic mechanical construction of a pressing tongs and the pliers head, the design of the positioner and the design of a degree of freedom of movement of the positioner are known from the prior art various embodiments:

One out DE 27 18 165 A1 Known pressing pliers have a pliers head with a C-shaped frame, so that in this case the pliers head is open at the side. In another embodiment of the DE 27 18 165 A1 Move pressing jaws and attached thereto die halves "scissor-like" to each other. In both cases, a pliers head plane is set in the pliers head, in which move the die halves forming tool parts. The known pressing tongs have a positioner which is pivotable about a pivot axis between a Aufsteckstellung and a working position. The positioner has at least one plug-on position for attaching or plugging in the plug. The pivot axis is in this case oriented vertically to the pliers head plane. In this way it is possible to pivot the positioner in the Aufsteckstellung, insert the plug into a receptacle of the positioner and to pivot the positioner with the inserted plug through the open side of the pliers head back into the working position, in which the plug the intended relative position and -ausrichtung to the tool parts occupies. Following this, the processing of the plug in the form of the actual pressing operation can be done by the drive of the pressing tongs, here two mutually pivotable hand lever is operated.

Another pressing tongs is sold by the applicant under the type designation CS20KS. This pressing tongs also has a C-shaped, open to one side pliers head. At this pliers head, a positioner is linearly guided on an axis fixed to the pliers head, which is oriented according to the lower horizontal leg of the C and is arranged in a plane parallel to the pliers head plane. The positioner can be driven via a pivotable lever mounted on the pliers head, the pivoting movement of which is converted via a connection between a pin guided in a slot into a linear movement along the axis for the linear movement of the positioner.

Furthermore, a crimping pliers of the applicant with the type designation CS25KS is known, which also has a C-shaped pliers head. In this pressing tongs a positioner is pivotally mounted about a pivot axis relative to the pliers head, the oriented vertically to the pliers head plane. The positioner is about the rotation of a knurl parallel to the pliers head plane pivotable between a Aufsteckstellung and a working position.

DE 198 32 884 C1 discloses a crimping pliers with a pliers head in a plate construction, which is not C-shaped with one-sided opening, but O-shaped without opening in the circumferential direction. In accordance with the operation of hand levers a movable tool part is displaceable in the direction of a longitudinal axis relative to a pliers head fixed tool part. The document proposes a positioner, which is pivotable about a pivot axis which is oriented parallel to the pliers head plane and transversely to the direction of movement of the tool parts of the pressing pliers. In a working position, the positioner is oriented substantially parallel to the pliers head plane. From this working position, the positioner can be pivoted out of the pliers head plane about the pivot axis into the plug-on position.

While for the previously discussed positioners, actuation of the positioner has required holding the crimping pliers, for example in the range of hand levers, with one hand of the user, while the other hand of the user operates the positioner from a working position to an attaching position (or vice versa) , beats DE 10 2008 017 366 A1 a pivot positioner before, on which a boom is mounted, the actuating surface is guided in the vicinity of the hand lever of the pressing tongs that with the thumb of the hand, which holds the pressing tongs in the hand lever, the positioner can be pivoted, with a simplified operation, in particular a one-hand operation is possible.

DE 10 2008 012 011 B3 discloses a pliers head, in which Gesenkmatrizen with a plurality of die halves, which are held relative to each other in the course of the crimping tool parts moved transversely to the pliers head, so that depending on the workpiece to be pressed different formed by associated die halves of the Gesenkmatrizen dies centered in the pliers head can be arranged. As a result, the balance of power can be optimized for the different dies used for different workpieces, and / or the number of dies can be used with different geometries can be increased in a Gesenkmatrize.

OBJECT OF THE INVENTION

• der Bauraumanforderungen,
• der Zahl der Gesenkhälften in einer Gesenkmatrize und/oder
• hinsichtlich der Querschnittsabmessungen der Stecker, welche mit dem Zangenkopf verpresst werden können,

verbessert ist.The invention has for its object to provide a pliers head with a positioner, which in terms

• the space requirements,
• the number of die halves in a die matrix and / or
• with regard to the cross-sectional dimensions of the plugs, which can be pressed with the pliers head,

is improved.

SOLUTION

The object of the invention is achieved with the features of independent claim 1. Further embodiments of a pliers head according to the invention will become apparent according to the dependent claims 2 to 8.

DESCRIPTION OF THE INVENTION

Whereas prior to the filing date of the present invention it was well known that several receptacles for plugs, which were to be pressed over juxtaposed dies of the pliers head, could be arranged side by side on a positioner, the experts assumed before the filing date of the present invention that mandatory the die halves must have in a Gesenkmatrize the pliers head a distance which is greater than the width of the plug in the cross-sectional areas, which are held by the positioner. This prejudice was based on the fact that if this implicitly recognized rule was violated, the adjacent plugs in the area of the positioner would no longer fit next to each other.

This prejudice of the art overcomes the present invention for the first time, which can lead to an enlarged range of application of the pliers head according to the invention, improved space conditions, larger plugs to be pressed and / or an increase in the number of die halves in the region of a die matrix of the pliers head:

According to the invention, the positioner has a first receptacle. The width of this first receptacle (and possibly also any further receptacles) is at least as large as the distance between a first die and an adjacent second die of the pliers head. The positioner has a first operating position and a second operating position. In the first operating position of the positioner, the first receptacle assumes a predetermined position and / or orientation behind the first die, so that in the first operating position in the first die a connector with a cable end can be pressed. In view of the above-mentioned dimensioning of the width of the first receptacle, a plug which is larger than the plug to be pressed according to the prior art can be pressed here, and / or the first die can have a reduced distance from the adjacent second one compared with the prior art Have a die. In this case, the invention may possibly be accepted for the first time that an edge region of the first receptacle extends into an area behind the second die in this first operating position because of the large width of the plug and the first receptacle, in which in the second operating position for use of the second Gesenkes for pressing another plug extends an edge region of a then coaxial with the second die arranged receptacle.

1. a) Möglich ist, dass auch in der zweiten Betriebsstellung des Positionierers die erste Aufnahme des Positionierers genutzt wird. Für diese Variante nimmt die erste Aufnahme des Positionierers eine vorbestimmte Position und/oder Orientierung hinter dem zweiten Gesenk ein. Somit ermöglicht die Erfindung, dass ein- und dieselbe Aufnahme des Positionierers mit unterschiedlichen Gesenken zum Verpressen des Steckers verwendet wird, wobei in den beiden Betriebsstellungen gleiche oder unterschiedliche Stecker und/oder Kabelenden verpresst werden können. Durch die Nutzung der Aufnahme in Verbindung mit den Gesenken in unterschiedlichen Betriebsstellungen kann das zuvor erläuterte Vorurteil hinsichtlich der Dimensionierung der Breite der Aufnahme und damit der Breite des Steckers im Vergleich zu dem Abstand der beiden Gesenke überwunden werden.
2. b) In einer abweichenden, ebenfalls von der Erfindung umfassten Variante nimmt allerdings in der zweiten Betriebsstellung des Positionierers eine zweite Aufnahme des Positionierers eine vorbestimmte Position und/oder Orientierung hinter dem zweiten Gesenk ein. Kämen die erste und zweite Aufnahme hinter den beiden benachbarten Gesenken ohne veränderte Betriebsstellung des Positionierers zum Einsatz, wäre gerade die erfindungsgemäß zu vermeidende Kollision der beiden Stecker in benachbarten Aufnahmen des Positionierers gegeben und die beiden Aufnahmen müssten eine Art "Überlappung" besitzen. Die Kollision wird erfindungsgemäß vermieden, indem die erste Aufnahme des Positionierers mit dem darin angeordneten Stecker in dem ersten Gesenk in der ersten Betriebsstellung verpresst wird, während unter Umständen keine Aufnahme hinter der zweiten Aufnahme des Positionierers angeordnet ist, so dass hier der Platz frei ist und sich ein Teil der ersten Aufnahme in diesen Bereich erstrecken kann. Entsprechend wird mit der Überführung von der ersten zur zweiten Betriebsstellung der Platz hinter dem ersten Gesenk durch die erste Aufnahme freigegeben, so dass sich dann die zweite Aufnahme, die hinter dem zweiten Gesenk angeordnet ist, zumindest teilweise in diesen Bereich hinein erstrecken kann.

For the configuration of the second operating position of the positioner, there are two possibilities covered by the invention:

1. a) It is possible that also in the second operating position of the positioner, the first recording of the positioner is used. For this variant, the first receptacle of the positioner assumes a predetermined position and / or orientation behind the second die. Thus, the invention allows one and the same receptacle of the positioner is used with different dies for pressing the plug, wherein the same or different plugs and / or cable ends can be pressed in the two operating positions. By using the receptacle in conjunction with the dies in different operating positions, the previously explained prejudice with regard to the dimensioning of the width of the receptacle and thus the width of the plug compared to the distance of the two dies can be overcome.
2. b) In a variant, also encompassed by the invention variant, however, takes in the second operating position of the positioner, a second receptacle of the positioner a predetermined position and / or orientation behind the second die. If the first and second receptacles behind the two adjacent dies would be used without the positioner being changed, the collision of the two plugs in adjacent receptacles of the positioner would be avoided according to the invention and the two receptacles would have to have a kind of "overlap". The collision is inventively avoided by the first receptacle of the positioner is pressed with the plug disposed therein in the first die in the first operating position, while under some circumstances no recording is arranged behind the second receptacle of the positioner, so that here the space is free and a portion of the first shot may extend into that area. Accordingly, with the transfer from the first to the second operating position, the space behind the first die is released by the first receptacle, so that then the second receptacle, which is arranged behind the second die, can extend at least partially into this area.

It is possible that the positioner occupies a multi-stable position in the first and second operating position and in any intermediate positions, so for example by its friction in a once occupied operating position remains, with overcoming the friction then the operating position is continuously variable. In a particular embodiment of the invention, the positioner in the first and / or second operating position can be locked or locked.

In this case, a locking device used for locking is understood to mean a device which, for small acting forces on the positioner, holds the positioner in the surrounding area of a occupied operating position or in the same, while for larger acting forces the positioner can be moved away from the operating position. An example of such a locking device is a spring-loaded detent ball which engages in the operating position in a corresponding detent groove, which can be specified via the diameter design of the detent ball, the geometry of the groove and the stiffness of the detent ball spring supporting the forces that are required to move the positioner from the assumed operating position. Accordingly, a locking pin or other locking element can be used in conjunction with a suitable locking contour and resilient support. Also possible is the use of a

Magnet as a latching device, wherein on the strength of the magnet, the latching force can be set in the operating position.

By contrast, a locking device used for locking means a device which can not be solved only by applying forces in the direction away from the locked operating position. Rather, preferably takes place in a locking device a positive securing a occupied operating position (with or without clearance), for which purpose preferably a locking pin, a locking pawl or other locking element can be used. This locking element must be released from the same hand or the second hand of the user or be released by additional actuators from the positive connection.

By locking or detenting an operating position, the user can first be given a haptic feedback when the latter has transferred the positioner to a desired operating position. On the other hand, the locking device or locking device ensures that the positioner is actually at the desired position, whereby ultimately the precision of the crimping process can be increased. Finally, during the crimping process, the latching device or locking device itself can prevent the plug from displacing from the desired position when the considerable crimping forces act by the positioner leaving the operating position.

The movement of the positioner between the first and second operating position (and also in other operating positions) can be arbitrary and ensured and guided by suitable connection with other components of the pliers head, including suitable guide and / or storage units can be used. Furthermore, a suitable operating mechanism in the form of levers, gear connections, buttons, knurls u. Ä. Be provided.

In a particular embodiment of the invention, however, the positioner is translationally displaceable between the first and second operating position, including preferably a suitable guide unit, such as a guide rail, a tongue and groove connection o. Ä., Optionally with preferred positions, detents and / or end stops , can be provided. In this case, the translational shift degree of freedom of the positioner extends preferably parallel to the connecting straight line between the first die and the second die. Thus, it is possible to use the translational degree of freedom to transfer a recording of the positioner from an operating position behind the first die to an operating position behind an adjacent second die. In extreme cases, in this case, the positioner only a single shot (the "first shot" in the sense of the claim) have, which can then be used depending on the operating position with different dies.

In an alternative embodiment of the invention, the positioner between the first and second operating position is pivotable. To ensure such a pivotability of the positioner, there are a variety of storage or coupling options. To mention here only an example, the positioner can be formed via a pivot bearing in the form of a bearing sleeve or a bearing eye in conjunction with a bearing pin extending therethrough, whereby a very simple, robust and reliable pivot bearing can be formed.

While it is quite possible that for the pivotable support of the positioner it is pivoted only over an angle of less than 360 °, the invention proposes in a further embodiment that the positioner as a kind of revolver or turntable (hereinafter "turret") is formed is, which then does not necessarily have to be pivoted back and forth, but can also be pivoted between different operating positions by rotation in one direction, but also over an angle of more than 360 °.

It is quite possible that a recording of the revolver can be used depending on the operating position with different dies. Preferably, however, a first receptacle is arranged behind the first die in the first operating position of the revolver, while in the second operating position of the revolver a second receptacle is arranged behind the second die.

Advantageous developments of the invention will become apparent from the claims, the description and the drawings. The advantages of features and of combinations of several features mentioned in the introduction to the description are merely exemplary and can be effective as an alternative or cumulatively without the advantages of Embodiments of the invention must be achieved. Further features are the drawings - in particular the illustrated geometries and the relative dimensions of several components to each other and their relative arrangement and operative connection - refer. The combination of features of different embodiments of the invention or of features of different claims is also possible deviating from the chosen relationships of the claims and is hereby stimulated. This also applies to those features which are shown in separate drawings or are mentioned in their description. These features can also be combined with features of different claims. Likewise, in the claims listed features for further embodiments of the invention can be omitted.

BRIEF DESCRIPTION OF THE FIGURES

Fig. 1

zeigt drei Stecker mit verhältnismäßig geringer Breite.

Fig. 2

zeigt einen Positionierer, mittels dessen Stecker gemäß Fig. 1 in nebeneinander liegenden Gesenkhälften von Gesenkmatrizen eines Zangenkopfes gemäß dem Stand der Technik verpresst werden können.

Fig. 3

zeigt Stecker mit verhältnismäßig großer Breite, welche mit dem erfindungsgemäßen Zangenkopf mit Positionierer verpresst werden sollen.

Fig. 4

zeigt einen Zangenkopf ohne Positionierer gemäß dem Stand der Technik in einer räumlichen Ansicht.

Fig. 5

zeigt einen erfindungsgemäßen Positionierer in räumlicher Darstellung, bei welchem eine Aufnahme translatorisch von einer ersten Betriebsstellung in eine zweite Betriebsstellung bewegbar ist.

Fig. 6

zeigt den Positionierer gemäß Fig. 5 in einer Vorderansicht.

Fig. 7

zeigt den Positionierer gemäß Fig. 5 und 6 in einer Seitenansicht.

Fig. 8

zeigt eine Presszange mit einem erfindungsgemäßen Zangenkopf mit einem Positionierer gemäß Fig. 5 bis 7 in einer räumlichen Darstellung.

Fig. 9

zeigt in einer räumlichen Darstellung eine Presszange mit einer alternativen Ausgestaltung eines erfindungsgemäßen Zangenkopfes mit einem revolverartigen Positionierer.

Fig. 10

zeigt den in dem erfindungsgemäßen Zangenkopf gemäß Fig. 9 eingesetzten Positionierer in einer Einzelteildarstellung in Vorderansicht.

Fig. 11

zeigt den Positionierer gemäß Fig. 10 in einer räumlichen Darstellung.

In the following the invention will be further explained and described with reference to preferred embodiments shown in the figures.

Fig. 1

shows three plugs with relatively small width.

Fig. 2

shows a positioner, by means of the plug according to Fig. 1 can be pressed in juxtaposed die halves of Gesenkmatrizen a pliers head according to the prior art.

Fig. 3

shows plug with relatively large width, which are to be pressed with the pliers head according to the invention with positioner.

Fig. 4

shows a pliers head without positioner according to the prior art in a spatial view.

Fig. 5

shows a positioner according to the invention in a spatial representation, in which a recording is movable in translation from a first operating position to a second operating position.

Fig. 6

shows the positioner according to Fig. 5 in a front view.

Fig. 7

shows the positioner according to FIGS. 5 and 6 in a side view.

Fig. 8

shows a crimping pliers with a pliers head according to the invention with a positioner according to Fig. 5 to 7 in a spatial representation.

Fig. 9

shows in a three-dimensional view a pressing tongs with an alternative embodiment of a pliers head according to the invention with a turret-like positioner.

Fig. 10

shows the according to the invention in the pliers head Fig. 9 used positioner in an itemized view in front view.

Fig. 11

shows the positioner according to Fig. 10 in a spatial representation.

DESCRIPTION OF THE FIGURES

Fig. 1 shows three plugs 1a, 1 b and 1 c, whose longitudinal axes are oriented parallel to each other and whose distance 2 is chosen as large as the distance of die halves 25a, 25b, 25c and 25d and 26a, 26b, 26c and 26d in a pair of Gesenkmatrizen 23, 24 of a pliers head 18 (s. Fig. 4 ). The plugs 1 each have a crimping portion 3 which, during the crimping process, has a stripped cable end disposed therein in a die 37a (37b; 37c; 37d) which is supported by a pair of die halves 25a, 26a (25b, 26b; 25c, 26c; 26d) is formed, is pressed, and a connector portion 4, which in a receptacle 5 of a positioner 6 (s. Fig. 2 ) is arranged, where this is not deformed during the crimping, but over which before and during the crimping a specification of the position and orientation of the plug 1 takes place. In Fig. 1 It can be seen that the width 7 of the plug 1, here the extent transverse to the pressing direction, is smaller than a distance 2 adjacent die halves 25, 26. As a result, in the positioner 6 plug 1 optionally in the different, with fixed predetermined distance juxtaposed recordings 5a, 5b, 5c, 5d are arranged. Nevertheless, between the adjacent seats 5 in the positioner 6 still a structurally related web 8 remain.

By increasing the width 7, the wall thickness of the webs 8 decreases. If a minimum wall thickness of the webs 8 is required, an increase in the width 7 then results in that the total width of the positioner 6 according to Fig. 2 must increase, which ultimately also widening of the Gesenkmatrizen 23, 24 and the entire pliers head 18 by itself.

Fig. 3 shows to illustrate the problem underlying the invention plug 1a, 1b, 1c, in which the width 7 of the connector areas 4 is increased, wherein the distance of the die halves 25, 26 in the pliers head 18 dependent distance 2 adjacent plug 1 has been maintained , Here, the collision of the adjacent plug 1a, 1b, 1c can be seen, which has the consequence that the web 8 is completely eliminated and the plug 1 are not simultaneously inserted into the adjacent receptacles 5 assigned to them.

Fig. 4 shows a pliers head according to the prior art without a positioner, in which with actuation, here by manually pivoting of hand levers 35, 36, two tool parts 20, 21 relative in the vertical direction according to Fig. 4 be moved towards each other. The tool parts 20, 21 each carry the Gesenkmatrizen 23, 24 or form this directly. For the illustrated embodiment, the tool part 20 is held fixed to the frame, while the tool part 21 with pivoting of the hand lever 35, 36 is shifted toward each other vertically upward under the guidance of the frame 27. For the illustrated embodiment, the Gesenkmatrizen 23, 24 with four die halves 25a -d or 26a-d, each having a distance 2 from each other in a direction transverse to the pressing direction. Each associated die halves 25a, 26a (25b, 26b, 25c, 26c, 25d, 26d) together form dies 37a, 37b, 37c, 37d, which are closed in the closed position of the tool parts 20, 21 in the circumferential direction. The die halves 25, 26 of the Gesenkmatrizen 23, 24 may in this case have the same or different geometries. In this closed position, the tool parts 20, 21 are pressed against each other. For the illustrated embodiment, a screw or bolt 38 is attached to the tool part 21, wherein the screw 38 extends vertically to the pliers head plane and is intended for the attachment of a positioner 6 according to the invention.

Fig. 5 shows a positioner 6 according to the invention, which has a holding body 9 which is fixed or detachable, lockable or locked with another component of the pliers head 18. For this the in Fig. 5 shown holding body 9 a Bore or a slot 10 through which (s), for example, from the frame 27 of the pliers head 18 or a tool part 20, 21 worn screw 38 or otherwise fastener may extend therethrough. Furthermore, the positioner 6 has according to Fig. 5 a displacement body 11 which is displaceable translationally along a degree of freedom 12 relative to the holding body 9. The degree of freedom 12 is in this case oriented parallel to the connecting line of juxtaposed die halves 25a-d, 26a-d or dies 37a-d of the pliers head 18. On the side facing the dies 37 the sliding body 11 forms a first (and here only) receptacle 5, whose cross section is adapted to the cross section of the plug region 4 and whose depth is dimensioned such that the crimping region 3 is located in the associated die 37. The sliding body 11 has side surfaces 39 which the user can grasp with two fingers to cause displacement of the sliding body 11 along the degree of freedom 12. To ensure this shift takes place between the holding body 9 and the sliding body 11 is a suitable guide unit use, such as a tongue and groove guide o. Ä.

From the view of the positioner 6 according to Fig. 6 It can be seen that the positioner 6 has a first operating position 14, a second operating position 15, a third operating position 16 and a fourth operating position 17. The operating positions 14-17 are arranged lying side by side transversely to the pressing direction with a distance 29 which is at most as large as or smaller than the width of the receptacle 5. The positioner 6 is located in the FIGS. 5 and 6 in the second operating position 15. A change from one operating position to another operating position is effected by movement of the sliding body 11 along the degree of freedom 12. Preferably takes place in the operating positions 14-17 latching or locking.

Fig. 8 shows the use of the positioner 6 according to Fig. 5 to 7 With a pliers head 18 of a pair of pliers 19. On a frame 27, a fixed tool part 20 or a moving with the crimping relative to the fixed tool part 20 tool part 21 (directly or indirectly), the positioner 6 are fixed, which is for in Fig. 8 illustrated embodiment by the extending through the holding body 9 in the region of the elongated hole 10 screw 38, the head rests on the outside of the holding body 9, while the threaded end portion with the associated component of the pliers head 18, here with the tool part 21, is screwed.

In the operating positions 14-17, respectively, the longitudinal axis 28 of the receptacle 5 is arranged coaxially with an associated die 37a-d, which is formed with a pair of die halves 25a-d, 26a-d. A displacement of the positioner 6 in another operating position has the consequence that the longitudinal axis 28 of the receptacle 5 is moved to a different position, where it is arranged coaxially to another die 37 a-d. In this case, the distances 29 between adjacent operating positions 14-17 are preferably smaller than the width of the plug 1 in the plug regions 4 or smaller than the width of the receptacle 5.

The positioner 6 can be used as an optional additional part on the pliers head 18, so that the pliers head 18 can be used with and without positioner 6. Quite possible are alternative embodiments in which the positioner 6 in addition to the translational degree of freedom 12 also has a pivoting degree of freedom over which this is pivotable between a Aufsteckstellung and a working position, see. especially DE 10 2008 017 366 A1 and the prior art mentioned therein.

For the in Fig. 8 illustrated embodiment is a special form of a crimping tool with an O-shaped frame 27 and actuation of a tool part manually via hand lever 35, 36 which are hinged together, two external tie rods and a central pressure lever. It is understood that the present invention can be used in conjunction with any other type of crimping tool with other actuation kinematics, other frame design and / or deviating movements of the tool parts during the crimping process. It is also possible that different inserts can be fastened to the tool parts, each having different Gesenkmatrizen, whereby the number of usable Gesenkgeometrien can be increased. It is understood that the present invention can also be used with translationally displaceably guided pressed-die halves, like these in FIG DE 10 2008 012 011 B3 are described.

Fig. 9 shows an alternative embodiment of a positioner 6 of a pliers head 18 according to the invention as part of a pliers 19. Again, the positioner 6 is held directly or indirectly on a frame 27 or a tool part 20, 21 of the pliers head 18. This is done via a bearing pin 30, which extends perpendicular to the pliers head plane. The bearing pin 30 extends through a bore 31 of a rotary body 32 of the positioner 6, so that the rotary body 32 relative to the pliers head 18 is a rotary Has degree of freedom 33. On the side facing the dies 37, the rotary body 32 has two sets of seats 5a-5d and 5e-5h.

In the in Fig. 10 effective operating position, the receptacle 5a is in its operating position 5a ', in which it is arranged in alignment with an associated die 37a. Because in Fig. 10 the multiple dies 37a-d must be arranged horizontally next to each other, for their use, the recordings 5b-5d (as well as the recordings 5f-5h) horizontally at predetermined intervals in addition to the operating position 5a 'of the receptacle 5a in Fig. 10 to be brought, what with 5b ', 5c' and 5d 'in Fig. 10 characterized in that they are arranged in alignment with or behind the associated dies 37b, 37c, 37d. The same applies to the recordings 5f-5h. If the rotary body 32 of the in Fig. 10 Turned shown in the first operating position by 90 ° clockwise, the receptacle 5b is brought to the point 5b ', so that the receptacles 5b is arranged in this second operating position in alignment with another die 37b. Accordingly, a rotation of the rotary body 32 leads by 180 ° clockwise from in Fig. 10 shown operating position that the receptacle 5d is spent in the 5d 'marked position, where then the receptacle 5d is arranged in alignment with another die 37d. The receptacle 5c can be moved accordingly by rotation of the rotary body 32 by 270 ° in the clockwise direction in the position marked 5c ', in which the receptacle 5c is arranged in alignment with another die 37c. The same applies to the recordings 5e-5h. Out Fig. 10 It can be seen that, due to the configuration according to the invention, there is no limitation whatsoever on the width of the receptacles 5, that is to say also with regard to the width of the plug regions 4 of the plugs 1. Rather, the width can also be chosen so large that in the positions 5a ', 5b', 5c ', 5d' an "overlap" of the receptacles 5 is given.

For the in Fig. 10 illustrated embodiment, the Gesenkmatrizen 23, 24 each have four die halves 25a-d, 26a-d, wherein in the rotary body 32 two different sets each with four shots 5a-5d and 5e-5h are arranged and the different sets each for different geometries of Connector areas 4 are determined. It is understood that the number of receptacles 5 in such a set and / or the number of sets of a rotary body 32 can be varied as desired. It is possible that a plurality of rotary bodies 32 are interchangeable and optional in the pliers head 18 can be used. The rotary body 32 forms a type of revolver 34. The movement of the positioner is preferably independent of the movement of the hand lever 35, 36 and the tool parts 20,21.

For the in Fig. 9-11 illustrated embodiment, the receptacles 5a-5d of a set are not side by side with a distance from each other, which corresponds to the distance of the associated dies 37. Rather, the distance of the receptacles 5a-5d is increased, which has the consequence that the recordings 5a-5d can be brought into effect only by changing the operating position, here by rotation of the rotary body 32 along the degree of freedom 33rd

LIST OF REFERENCE NUMBERS

1

plug

2

distance

3

Crimping range

4

plug area

5

admission

6

positioners

7

width

8th

web

9

holding body

10

Long hole

11

sliding body

12

degree of freedom

14

first operating position

15

second operating position

16

third operating position

17

fourth operating position

18

pliers head

19

tongs

20

tool part

21

tool part

22

pressing direction

23

Gesenkmatrix

24

Gesenkmatrix

25

die halves

26

die halves

27

frame

28

longitudinal axis

29

distance

30

pivot

31

drilling

32

rotating body

33

degree of freedom

34

revolver

35

hand lever

36

hand lever

37

die

38

screw

39

side surface

Claims (8)

Pliers head (18) for a pressing tongs (19) with a) at least two dies (37a, 37b) for pressing a plug (1) and b) a positioner (6) with at least one receptacle (5) for plug (1), wherein ba) by means of the positioner (6) in a receptacle (5) arranged plug (1) can be held in a predetermined position and / or orientation relative to the die (37) and bb) the positioner (6) is movable relative to the die (37), characterized in that c) the positioner (6) has a first receptacle (5; 5a) whose width is at least as great as the distance (2) between a first die (37a) and an adjacent second die (37b), d) a first operating position (14) of the positioner (6) is provided, in which the first receptacle (5) of the positioner (6) occupies a predetermined position and / or orientation behind the first die (37a), e) a second operating position (15) of the positioner (6) is provided, in the ea) the first receptacle (5) of the positioner (6) or eb) a second receptacle (5b) of the positioner (6)
assumes a predetermined position and / or orientation behind the second die (37b) Pliers head (18) according to claim 1, characterized in that the positioner (6) in the first and / or second operating position (14, 15) can be locked or locked. Pliers head (18) according to one of the preceding claims, characterized in that the positioner (6) between the first and second operating position (14; 15) along a translational degree of freedom (12) is displaceable. Pliers head (18) according to claim 3, characterized in that the positioner (6) has a receptacle (5) which in the first operating position (14) behind the first die (37a) and in the second operating position (15) behind the second Die (37b) is arranged. Pliers head (18) according to any one of claims 1 and 2, characterized in that the positioner (6) between the first and second operating position (14, 15) is pivotable. Pliers head (18) according to claim 5, characterized in that the positioner (6) is designed as a revolver (34). Pliers head (18) according to claim 6, characterized in that in the first operating position of the revolver (34) the first receptacle (5a) behind the first die (37a) and in the second operating position of the revolver (34) the second receptacle (5b) are arranged behind the second die (37b). Pliers head (18) according to claim 3 or 4, characterized in that the path traveled by the positioner (6) between the first operating position (14) and the second operating position (15) is greater than the distance between the first die (37a) and the adjacent second die (37b).

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