EP3904006A1 - Crimping tool holder and crimping tool - Google Patents

Abstract

The invention relates to a crimping pliers die (1) with two die half units (2, 3). The die half units (2, 3) are guided relative to one another over the crimp stroke by means of a guide (51). Crimping surfaces (40, 41) of the die halves (5) are formed by the end faces of interlocking ribs (37). The guide (51) preferably has a guide rod (43), which is formed by an end-side thickening (42) of a rib (37), and a guide recess (50), which is formed by a guide recess area (45), the two ribs (37) The crimping pliers die (1) is used for crimping pliers, which can be used, for example, for crimping wire end sleeves.

Description

TECHNICAL FIELD OF THE INVENTION

The present invention relates to a crimping tool die which is intended for use in a crimping tool. The crimping pliers die has two die half units. Die halves of the die half units delimit a die holder with crimping surfaces. A workpiece, for example a wire end sleeve (with or without an insulating collar) with a cable arranged in it at the edges, can be inserted into the die holder. The workpiece is then crimped between the crimping halves of the dies via a crimping stroke in that the die halves and with them the crimping surfaces are moved towards one another along a crimping axis. The die half units each have a pivot bearing element. The pivot bearing element is part of a pivot bearing (formed by the crimping pliers die or together with the pliers jaws of the crimping pliers), with which the die halves can be rotated about an axis of rotation oriented coaxially or parallel to the crimping axis. This rotation can be used to enable a change in the relative position of the die holder with respect to the pliers jaws, which means that the workpiece can be inserted into the die holder and / or the workpiece can be crimped with the crimping pliers die in different orientations of the die holder (and thus the workpiece) relative to the Pliers jaws, a pliers head, a base body and / or the hand levers of the crimping pliers can take place.

STATE OF THE ART

The pamphlet EP 0 516 598 B1 discloses a crimping tool die having two die half units. The die half units are each mounted on the tong jaws via pivot bolts in the bearing eyes of the pliers jaws of the crimping pliers so as to be pivotable about a pivot axis arranged vertically to a pivot plane of the pliers jaws. The die half units each have a guide rod and on one side of a die the other side of the die half via a guide recess designed as a guide bore. The guide rod of one die half unit is then slidably guided in the assigned guide bore of the other die half unit in the direction of the crimping axis, thus forming an anti-rotation device via which the two die half units are guided relative to one another via the crimp stroke. In a relative position of the two die half units predetermined by the anti-rotation device, the two die half units can be rotated together about an axis of rotation that runs coaxially to the crimping axis. Depending on the angle of rotation of the die half units around this axis of rotation, the longitudinal axis of the die receptacle bounded by the two die halves can then be aligned in a first rotational position in which the die receptacle is oriented in the longitudinal direction of the crimping pliers and runs in the pivot plane of the pliers jaws, as well as in a second rotational position take place in which the die holder is oriented vertically to the swivel plane of the pliers jaws. While a workpiece can be inserted frontally into the crimping pliers and into the die holder in the first rotary position, in the second rotary position it is possible to insert the workpiece laterally into the die holder.

The pamphlets too WO 2019/105704 A1 and WO 2019/105703 A1 disclose generic crimping pliers dies which are held on pliers jaws of a crimping pliers via a pivot bearing so that they can be rotated about an axis of rotation which is oriented parallel to the crimping axis.

OBJECT OF THE INVENTION

The present invention is based on the object of proposing a crimping pliers die which is improved in particular with regard to operation and / or ensuring the desired crimping result. In addition, the invention is based on the object of proposing crimping pliers with a correspondingly improved crimping pliers die.

SOLUTION

The object of the invention is achieved according to the invention with the features of the independent patent claims. Further preferred embodiments according to the invention can be found in the dependent claims.

DESCRIPTION OF THE INVENTION

The present invention relates to a crimping pliers die with two die half units. The die half units have die halves which can be moved relative to one another via a crimping stroke along a crimping phase. The die half units each have a rotary bearing element with which a rotation of the die halves about an axis of rotation oriented coaxially or parallel to the crimping axis is ensured. For example, the rotary bearing element can be a bearing journal of the die half unit which is oriented coaxially to the axis of rotation and which is received in a bearing eye of the pliers jaw or in a bearing body supported on the pliers jaw of the crimping pliers. It is also possible for the rotary bearing element of the die half unit to be a bearing eye into which a bearing journal of the tong jaw or a holding body of the tong jaw extends. In this case, the pivot bearing, which provides the axis of rotation and ensures the rotation of the die halves, is formed jointly by the crimping pliers die and other components of the crimping pliers. However, it is also entirely possible that the pivot bearing that ensures the rotation of the die halves about the axis of rotation is part of the die half units, so that no additional measures need to be taken for connecting the crimping pliers die to the pliers jaws in order to enable the rotation about the axis of rotation.

According to the invention, it is proposed that a stop body, in particular a stop disk, be provided on the crimping pliers die. The stop body is mounted on one of the two die halves via a stop body pivot bearing so that it can rotate about a stop body pivot axis. The stop body axis of rotation is oriented parallel to a receiving axis of a die receiving element formed by the die half units. The stop body has at least two insertion stops which are arranged distributed over the circumference around the stop body rotation axis, their distance from the stop body rotation axis preferably corresponding to the distance between the die holder and the stop body rotation axis. In the context of the invention, the insertion stops can be distributed uniformly or unevenly over the circumference around the stop body axis of rotation. The insertion stops can provide an insertion aid for inserting the workpiece into the die holder. An insertion stop is preferably used to specify how far the workpiece can be inserted into the die holder in the direction of the longitudinal axis of the workpiece. The different insertion stops can be adapted to different workpieces to be crimped with the crimping pliers die, for example different sizes and / or axial lengths of ferrules. Thus, the different insertion stops can specify different insertion depths for the depth of the insertion of the workpiece into the die holder. The different insertion stops can then be brought into effect by rotating the stop body about the stop body axis of rotation, so that the user can adapt the crimping tool die by rotating the stop body, namely by adjusting the insertion depth, to different workpieces, in particular different types or sizes of wire end ferrules , can make. According to the invention, the respective insertion stop can be used regardless of which relative angle of rotation of the die holder is set and used by the user.

It is possible that the rotational position of the stop body is secured by frictional engagement or is secured in some other way. A stop body latching device or stop body locking device is provided for an embodiment of the crimping pliers die. The stop body latching device or stop body locking device latches or locks the stop body in predetermined stop body rotation angles of the stop body with respect to the die half, with which the operating position of the stop body can be secured.

There are many possibilities for the design of the stop body latching device or the stop body locking device. For a proposal of the invention, the stop body and the die half each have stop body guide surfaces. The stop body guide surfaces are oriented vertically to the stop body axis of rotation. On the stop body guide surfaces, the stop body and the die half are guided relative to one another during the rotation about the stop body axis of rotation. In this case, a stop body guide surface has a recess. In this recess a spring-loaded stop body latching element or a stop body locking element is arranged. The other stop body guide surface has several stop body latching recesses or stop body locking recesses. In these, for latching or locking, the stop body latching element or stop body locking element is at least partially arranged in the predetermined relative stop body rotation angles in which an insertion stop assigned to the stop body rotation angles is arranged at the correct location with respect to the die holder. In this way, an operating position of the stop body predetermined by the user can be secured.

There are also various possibilities for the type of design of the stop body pivot bearing. For a possible embodiment, it is proposed that the die half have a stop body bearing extension. This stop body bearing extension extends through a stop body pivot bearing bore of the stop body. On the side of the stop body facing away from the die half, the stop body bearing extension has an axial securing element which can be a securing ring received in an annular groove of the stop body bearing extension. For this refinement, the stop body can be axially caught between a base body of the die half and the axial securing element, thus providing a safeguard against the stop body bearing extension from emerging from the stop body.

The invention also proposes that the two die half units (here in particular the die halves) can be guided relative to one another over the crimp stroke by means of a guide. By means of this guide it can be ensured, for example, that the two die halves are always pivoted together about the axis of rotation oriented coaxially or parallel to the crimping axis. On the other hand, the guide can be used to guide the die halves relative to one another, with which ultimately the precision of the crimping result can be increased. The guide can be designed, for example, as disclosed for the prior art mentioned at the beginning.

For a particular proposal of the invention, the guide can have at least one guide rod held on a die half unit. This guide rod is guided in a guide recess of the other die half unit. The guide rod and the guide recess can have any cross-section as long as they ensure longitudinal guidance over the crimp stroke. The guide rod and the guide recess preferably have a (partially) circular guide cross-section.

It is also possible that two guide rods are provided, which are then guided in corresponding guide recesses. Here, both guide rods can be provided on one die half unit, while both guide recesses are then arranged on the other die half unit. However, it is also possible for each die half unit to have a guide rod and a guide recess.

In this respect, the crimping pliers die according to the invention can also, for example, be a crimping pliers die, like this one from the publication EP 0 516 598 B1 is known to correspond. According to EP 0 516 598 B1 but the die halves are solid with large crimping surfaces. These crimping surfaces according to EP 0 516 598 B1 are designed throughout. A continuous crimping surface of a die half according to EP 0 516 598 B1 is convex, while the crimping surface of the other die half according to EP 0 516 598 B1 is concave. According to the invention, however, it is proposed in a die half unit with a guide, for example accordingly EP 0 516 598 B1 to employ a different type of die halves, namely die halves each having a plurality of ribs. The ribs of the die halves then interlock with an extent of engagement that varies across the crimp stroke. In this case, the crimping surfaces of the die halves are formed from the end faces of the ribs. This type of dies thus does not produce a large-area continuous pressing of the workpiece between the die halves, but rather the pressing takes place in several partial areas arranged at a distance from one another in the area of the end faces of the spaced ribs of the die halves. The use of such die halves has proven to be advantageous for a special type of work piece, in particular for pressing wire end sleeves with a cable. Die halves with such interlocking ribs are for example from a tool of the applicant with the identification “CS 10-AE 22” or from one of the publications EP 3 179 580 A1 , U.S. 4,283,933 A and U.S. 6,151,950 A known. It has surprisingly been shown that the use of such known die halves with interlocking ribs can also be used for a crimping pliers die with a guide for the die half units, as shown, for example, in FIG EP 0 516 598 B1 is known.

According to EP 0 516 598 B1 the die halves have a base plate from which a die extends in the direction of the other die half. According to one side of the die EP 0 516 598 B1 the die plate on the guide recess, while according to EP 0 516 598 B1 on the other side of the die contour body, the guide rod is attached to the base plate. In principle, such a structure for the crimping pliers die according to the invention can also take place within the scope of the invention, in which, on the one hand, the ribs (or a die made solid without ribs) are held on a base plate and, on the other hand, the guide rod away from the ribs or the die on the Base plate are held and the guide recess extends through the base plate. For a special proposal of the invention, however, the guide rod is a thickened one Formed end region of at least one rib of a die half. This connection of the guide rod to the at least one rib of the die half can take place as an alternative or in addition to its connection to a base plate. However, the formation of the guide rod by the thickened end area of the at least one rib results in a particularly compact design. It is possible that the production is simplified since the guide rod can be produced as an integral part of the at least one rib. It is also possible that this reduces the assembly effort and the number of components of the crimping pliers die. Rather, the guide rod is connected at least over part of the extension of the rib (s) in the direction of the crimping axis to a plate-shaped base body of the rib, which can result in a particularly rigid support. The guide rod is therefore not held in a freely cantilevered manner on the base plate, so that, under certain circumstances, the precision of the guide is increased and the mechanical strength thereof is increased.

Alternatively or cumulatively, it is possible for the guide recess to be formed by a guide recess area or connection area which is arranged in the end area of at least one rib and preferably connects the end areas of two ribs of a die half. In this case, the guide recess area forms an at least cylinder segment-shaped guide surface and the guide recess delimited by the guide surface, the guide recess being open at the edge in cross-section, namely open in the direction of the space between the two ribs. The guide recess area then has a cylinder segment-shaped guide surface on which the guide rod is guided. Here, the cylinder segment has a cylinder segment angle of more than 180 ° (preferably more than 200 °, more than 220 °, more than 240 °, more than 260 °, more than 280 °), which can mean that by means of the cylinder segment-shaped Guide surface a support can take place in orthogonal directions in a plane transverse to the guide axis. By connecting the guide recess area to two ribs, a very rigid support can be ensured.

The die halves (and also other components of the crimping pliers die) can be manufactured using any manufacturing method, for example using a casting method, an injection molding method and / or a material-removing or milling manufacturing method. For a special proposal of the invention, the die halves are designed as powder injection molded parts. In powder injection molding, which is also known as the PIM process (English for power injection molding) or MIM process (English for metal injection molding), it is a primary molding process for the production of metallic components. In powder injection molding, fine metal powder is mixed with an organic binder and shaped in an injection molding machine. The organic binder is then removed and the component is sintered in an oven at high temperatures. Under certain circumstances, any post-processing can be carried out after production in a molding or injection molding process. It has been shown that a powder injection molding process is advantageous for the production of the die halves and the complex geometry of the multiple ribs arranged parallel to one another and / or the guide.

For a further proposal of the invention, at least one die half unit has a bearing part. By means of the bearing part, the die half unit can be mounted pivotably on an associated gripper jaw. In this case, the assembly takes place with a swivel axis which is arranged vertically to a swivel plane of a gripper jaw. By utilizing the degree of freedom given by the pivot axes of the two die half units, the die half units can be aligned with one another on the tong jaws in such a way that the guide rod is arranged coaxially to the guide recess possibly on the other hand with the interlocking of the ribs is possible.

Basically, the bearing part can be accordingly EP 0 516 598 B1 be designed as a pivot pin, which is received in a bearing eye of a pincer jaw. A particularly simple assembly with a reduction in the number of components required is obtained if, for a further proposal of the invention, the bearing part has a bearing body. In this case, the bearing body can have a cylinder segment-like guide surface with a guide diameter. The bearing body also has an insert surface. In the area of the insertion surface, the extent of the bearing body is smaller than the guide diameter. If the bearing body is then to be inserted through an edge opening of an open-edged bearing eye of the pliers jaw, the bearing body of the bearing part is rotated so that the bearing body with the smaller extension in the area of the insert surface can be inserted into the bearing eye through the edge opening. If the bearing body is then in the bearing eye, the bearing body is rotated in such a way that the larger guide diameter of the cylinder segment-like guide surface comes into effect, with the result that the bearing body emerges from the edge opening is no longer possible. For this purpose, the edge opening of the bearing eye of the pliers jaw has an extension which is smaller than the guide diameter and larger than the extension of the bearing body in the area of the insertion surface.

For an embodiment of the crimping pliers die, the die half unit has a holding body which can also form the bearing part or which can also hold the bearing part. For this embodiment, the die half is mounted on the holding body via a pivot bearing. The pivot bearing has an axis of rotation which is oriented parallel to the guide axis of the guide rod and / or the guide recess. The axis of rotation thus runs parallel or coaxially to the guide axis of the guide. The axis of rotation can coincide with the crimping axis of the crimping pliers. The pivot bearing can be used to ensure that the die half units are rotated together relative to the tong jaws in such a way that the workpiece can be inserted into a die holder in different directions so that, for example, the workpiece can be inserted from the front or from the side.

It is also possible for a latching device or a locking device to be arranged between the holding body and the die half. The latching device or locking device can then latch or lock the die half at predetermined relative angles of rotation between the holding body and the die half about the axis of rotation. The latching device or locking device can thus secure an operating position of the crimping pliers die. In this case, locking can be abandoned by the user applying sufficiently large rotational forces around the axis of rotation, while locking cannot be abandoned by simply applying a torque about the axis of rotation, but rather an unlocking element must also be operated manually.

It is possible here for the holding body and the die surface to have guide surfaces. These guide surfaces are oriented vertically to the axis of rotation. The holding body and the die half are guided against one another on the guide surfaces during rotation about the axis of rotation. On the other hand, the crimping force can also be supported between the holding body and the die half via the guide surfaces. In this case, a guide surface has a recess. A latching or locking element is then arranged in the recess, which is acted upon by a pretensioned spring. The other guide surface then has latching or locking recesses. In predetermined relative angles of rotation Die half opposite the holding body, the latching or locking element is then (at least partially) arranged in an associated latching or locking recess, with which the latching or locking is provided. In this way, latching or locking can be provided in a structurally simple but reliable manner.

In principle, the pivot bearing for the rotatable mounting of the holding body with respect to the die half can be designed as desired. For one proposal of the invention, the holding body has a bearing extension to form the pivot bearing. The bearing extension is oriented parallel to the guide axis of the guide rod and / or the guide recess of the die half unit. The bearing extension extends through a pivot bearing bore in the die half and has an axial securing element. A material area of the die half can then be caught between a base body or a base plate of the holding body and the axial securing element, which prevents the bearing extension from axially exiting the pivot bearing bore of the die half. For example, the die half can have a lateral slot between the end face facing the holding body and the crimping surfaces. The end region of the bearing extension can then have an annular groove. When the bearing extension is inserted into the pivot bearing bore of the die half, the end annular groove of the bearing extension is accessible via the lateral slot and an axial locking element designed as a locking ring can then be inserted through the lateral slot and snap onto the annular groove.

It is possible that the die half units are designed differently in the crimping pliers die. On the one hand, the differences can relate to the die contours and the design of the crimping surfaces. It is also entirely possible, however, for the guidance or other components or design criteria of the die half units to differ from one another. To name only one example that does not limit the invention, one die half unit can have the two guide rods, while this die half unit does not form any guide recesses, the other die half unit then only being able to have guide recesses. For a special embodiment of the invention, however, the two die half units, the two bearing parts and / or the two die halves are designed identically, which reduces the number of components, reduces manufacturing costs, ensures greater interchangeability and also reduces the cost of stockpiling.

A further solution to the problem on which the invention is based is provided by crimping pliers. In these crimping pliers, die half units of a crimping pliers die, as described above, are held on the pliers jaws of the crimping pliers.

• der Betätigungskinematik,
• der Ausstattung mit einer Elektronik-Baueinheit,
• der Integration von Sensoren zur Erfassung eines Crimpwegs und/oder einer Crimpkraft,
• eines Zwangsgesperres,
• Möglichkeiten zum Auswechseln des Crimpzangen-Gesenks,
• eines Ratschen-Antriebs-Getriebes,
• einer Ermöglichung von unterschiedlichen Crimpstufen unter Aufteilung des gesamten Crimphubs in mindestens zwei Teilcrimphübe mit zugeordneten Schließbewegungen der Handhebel mit anschließender Wiederöffnung und Schließung der Handhebel in einem nächsten Teilcrimhub

u. ä. möglich.In principle, the crimping pliers die can be used on crimping pliers of any type, for example with regard to

• the actuation kinematics,
• the equipment with an electronic unit,
• the integration of sensors for recording a crimp path and / or a crimp force,
• a compulsory lock,
• Options for changing the crimping tool die,
• a ratchet drive gear,
• enabling different crimping stages by dividing the entire crimping stroke into at least two partial crimping strokes with associated closing movements of the hand levers with subsequent reopening and closing of the hand levers in a next partial crimping stroke

etc. possible.

For one embodiment of the invention, at least one die half unit is supported in the crimping pliers via a force-displacement compensation element. Such a force-displacement compensation element specifically provides elasticity on the path of the actuating forces applied by the user to the hand levers of the crimping pliers to the pliers jaws and to the die half units. This elasticity can be used to enlarge the range of possible geometries of the workpiece that can be crimped by means of the crimping pliers and the same die half units. If the crimping pliers are basically designed for crimping a workpiece with a relatively small geometry, crimping a workpiece with a larger geometry using the crimping pliers and the same die half units means that the required crimping forces have already been generated before the hand lever is fully closed . Without the force-displacement compensation element, the closed position of the hand lever cannot be reached. However, if the crimping tool is also equipped with a compulsory lock, this is necessary for re-opening the crimping tool It is essential to reach the closed position. If a force-displacement compensation element is used, further increased operating forces can then be generated on the crimping pliers for elastic yielding of the force-displacement compensation element in such a way that the hand levers can be completely closed, which then also allows the hand levers to be reopened by the automatic locking mechanism can be admitted. With regard to possible configurations of force-displacement compensation elements of this type, reference is made, for example, to force-displacement compensation elements, such as those from the publications EP 3 012 923 B1 or EP 0 732 779 B1 , EP 0 158 611 B1 , DE 31 09 289 C2 , DE 20 2012 102 561 U1 , DE 20 2009 005 811 U1 , DE 10 2013 100 801 A1 and EP 2 905 848 B1 are known.

Advantageous further developments of the invention emerge from the patent claims, the description and the drawings.

The advantages of features and of combinations of several features mentioned in the description are merely exemplary and can come into effect alternatively or cumulatively without the advantages necessarily having to be achieved by embodiments according to the invention.

With regard to the disclosure content - not the scope of protection - of the original application documents and the patent, the following applies: Further features can be found in the drawings - in particular the illustrated geometries and the relative dimensions of several components to one another and their relative arrangement and operative connection. The combination of features of different embodiments of the invention or of features of different patent claims is also possible in a way deviating from the selected back-references of the patent claims and is hereby suggested. This also applies to features that are shown in separate drawings or mentioned in their description. These features can also be combined with features of different patent claims. Features listed in the claims can also be omitted for further embodiments of the invention, but this does not apply to the independent claims of the granted patent.

The number of features mentioned in the claims and the description are to be understood in such a way that precisely this number or a greater number than the specified number is present without the explicit use of the adverb "at least" requirement. For example, when an element is mentioned, it is to be understood that there is exactly one element, two elements or more elements. These characteristics can be supplemented by other characteristics or be the only characteristics that make up the product in question.

The reference signs contained in the claims do not restrict the scope of the subject matter protected by the claims. They only serve the purpose of making the claims easier to understand.

BRIEF DESCRIPTION OF THE FIGURES

Fig. 1

zeigt in einer räumlichen Explosionszeichnung ein Crimpzangen-Gesenk.

Fig. 2

zeigt das Crimpzangen-Gesenk gemäß Fig. 1 in einer räumlichen Explosionszeichnung aus einer anderen Blickrichtung.

Fig. 3

zeigt das montierte Crimpzangen-Gesenk gemäß Fig. 1 und 2 in einer räumlichen Darstellung.

Fig. 4

zeigt in einer vereinfachten Darstellung einen Teilschnitt durch eine Crimpzange mit einem Crimpzangen-Gesenk gemäß Fig. 1 bis 3.

Fig. 5

zeigt ein Detail IV der Crimpzange gemäß Fig. 4 im Bereich der Verbindung des Crimpzangen-Gesenks mit Zangenbacken der Crimpzange.

Fig. 6

zeigt eine räumliche Explosionsdarstellung einer Crimpzange mit einem Crimpzangen-Gesenk gemäß Fig. 1 bis 3.

Fig. 7

zeigt in einer räumlichen Darstellung die montierte Crimpzange gemäß Fig. 6 ohne eine vordere feste Zangenteilplatte in einer räumlichen Ansicht.

Fig. 8

zeigt eine Crimpzange in einer Öffnungsstellung der Handhebel und Zangenbacken.

Fig. 9

zeigt die Crimpzange gemäß Fig. 8 in einer Schließstellung der Handhebel und Zangenbacken.

In the following, the invention is further explained and described with reference to preferred exemplary embodiments shown in the figures.

Fig. 1

shows a crimping pliers die in a three-dimensional exploded view.

Fig. 2

shows the crimping tool die according to FIG Fig. 1 in a spatial exploded view from a different perspective.

Fig. 3

shows the assembled crimping pliers die according to Fig. 1 and 2 in a spatial representation.

Fig. 4

shows a simplified representation of a partial section through a crimping pliers with a crimping pliers die according to FIG Figs. 1 to 3 .

Fig. 5

shows a detail IV of the crimping pliers according to FIG Fig. 4 in the area of the connection of the crimping pliers die with the pliers jaws of the crimping pliers.

Fig. 6

shows a three-dimensional exploded view of a crimping pliers with a crimping pliers die according to FIG Figs. 1 to 3 .

Fig. 7

shows the assembled crimping pliers according to FIG Fig. 6 without a front fixed pliers part plate in a three-dimensional view.

Fig. 8

shows crimping pliers in an open position of the hand lever and pliers jaws.

Fig. 9

shows the crimping tool according to Fig. 8 in a closed position of the hand lever and jaws.

FIGURE DESCRIPTION

In the present description of the figures, the same reference number is sometimes used for components that are identical or similar in terms of geometry and / or function, in which case these components can be distinguished from one another by an additional letter a, b, .... These components are then referred to with or without the additional letter, which can then refer to such a component, several of the components or all of the components.

Fig. 1 shows a three-dimensional exploded view of a crimping pliers die 1. The crimping pliers die 1 has an upper die half unit 2 and a lower die half unit 3, which are of identical design, so that for the following description, reference is primarily made to the die half unit 2, in which case the same also applies to the other die half unit 3.

The die half unit 2 has a holding body 4 and a die half 5.

The holding body has a bearing part 6 with a bearing body 7 and with stops 8, 9, which are designed here as webs 10, 11 arranged on both sides of the bearing body 7. The bearing part 6 with the bearing body 7 and the webs 10, 11 is arranged on the side of the holding body 4 facing away from the die half 5.

On the side facing the die half 5, the holding body 4 forms a guide surface 12. At least one recess 13, 14 extends from the guide surface 12, here in the form of a blind hole 15, 16. A spring 17 is supported on the bottom of the recess 14 and a latching element 18, here a latching ball 19, is supported via the spring 17. Depending on the installation situation, the spring 17 can also be arranged with the latching element 18 in the other recess 13 or a spring with an associated latching element can be assigned in both recesses 13, 14.

The bearing body 7 has a cylinder segment-like guide surface 20 and an insertion surface 21, which can be a flattened area 22, for example.

The die half 5 has a guide surface 23 on the side facing the holding body 4. In the assembled state, the guide surface 23 of the die half 5 rests on the guide surface 12 of the holding body 4, with the guide surfaces 12, 23 also supporting the crimping force between the die half 5 and the holding body 4 takes place. On the other hand, the guide surfaces 12, 23 ensure guidance during the relative rotation of the die half 5 with respect to the holding body 4, which will be explained below, and the guide surfaces 12, 23 ensure the desired alignment of the die half 5 with respect to the holding body 4 regardless of this relative rotation (preferably in the direction of the crimping axis 105).

Latching recesses 24a, 24b, ... extend from the guide surface 23 of the die half 5. The locking recesses 24 are designed as blind bores or through bores in a base plate 25 of the die half 5. To lock a relative angle of rotation between the holding body 4 and the die half 5, the locking element 18 can be pressed by the spring 17 out of the holding body 4 into the locking recess 24 of the die half 5 and (at least partially) enter the locking recess 24, whereby the relative angle of rotation between Die half 5 and holding body 4 is secured.

From a base plate 26 of the holding body 4 there extends a bearing extension 27, which is designed here as a journal and in the end region facing away from the base plate 26 has an annular groove 29. In the assembled state, the bearing extension 27 is accommodated in a pivot bearing bore 30 of the die half 5. In the assembled state, the bearing extension 27 extends as far as a lateral slot 31 of the die half 5. The annular groove 29 of the bearing extension 27 is accessible from the outside through the slot 31, so that it is possible to connect an axial securing element 32, here a securing ring 33, through the lateral slot 31 to the bearing extension 27 by snapping the securing ring 33 into the annular groove 29 for the design of the securing element 32 as a securing ring 33. In this way, the bearing extension 27 of the holding body 4 is secured against re-emergence from the die half 5.

The mounting of the bearing extension 27 of the holding body 4 in the rotary bearing bore 30 forms a rotary bearing 34. The rotary bearing 34 enables a relative rotation of the die half 5 with respect to the holding body 4 about an axis of rotation 35 which is oriented parallel or coaxially to the crimping axis 105. For different relative angles of rotation between the holding body 4 and the die half 5 around the axis of rotation 35, securing can take place through the entry of the latching element 19 into one of the latching recesses 24a, 24b, ..., whereby a latching device 36 is formed.

The die half 5 has several plate-shaped ribs 37a, 37b, ... which are arranged in parallel at the same distance from one another. The ribs 37 extend vertically to the base plate 25 of the die half 5. The ribs 37 extend parallel to the axis of rotation 5 and the crimping axis 105 The distance between the ribs 37a, 37b, ... is slightly greater than the thickness of the ribs 37a, 37b, ... The ribs 37a, 37b, ... all have the same thickness. The ribs 37a, 37b,. The ribs 37 of the die halves 5 of the die half units 2, 3 preferably rest on one another as closely as possible, but with little friction, so that a transition fit or clearance fit can be present here. A relative movement of the ribs 37 is thus possible in the direction of the crimping axis 105 and the axis of rotation 35. In a direction vertical to the plane of extent of the ribs 37, there is at most a small amount of play for a relative movement of the holding bodies 4 of the die half units 2, 3.

When looking in the direction of a die receptacle 38 formed by the die halves 5, the ribs 37 are basically designed according to a right-angled triangle. The legs delimiting the right angle of the triangle are alternately connected to the base plate 25 of the die half 5, with the result that crimping surfaces 39, 40 of adjacent ribs 37 formed by the ribs 37 form a type of V or a right angle. The crimping surfaces 39, 40 of the two die halves 5 of the die half units 2, 3 delimit the in Fig. 2 Obvious square, rectangular or diamond-shaped cross-sectional contour of the die holder 38. Here, the size of the die holder 38 can be reduced via the crimp stroke by relative movement of the die half units 2, 3 in the direction of the crimp axis 105, but a square, rectangular or diamond-shaped geometry is still maintained.

The dies (except for the side with the crimping surfaces 39, 40) for forming the die receptacle 38 have a fundamentally cuboid external geometry, this being open in the area of the spaces between the ribs 37.

A (preferably central) rib 37 extends beyond the cuboid external geometry with a strip-shaped or plate-shaped extension section 41 and an end-side thickening 42. The thickening 42 forms a guide rod 43 Rib 37 is connected to rib 37 in the direction of crimping axis 105. The extension section 41 and the thickening 42 have a constant cross section in the direction of the crimping axis 105, which is formed in the area of the extension section 41 by two guide surfaces arranged parallel to one another. In the area of the thickening 42, the cross-section is partially circular, so that the guide rod 43 forms a cylinder segment-like guide surface 44.

On the opposite side, two ribs 37, which bear directly on or adjoin the rib 37 that forms the guide rod 43, form a connection area or guide recess area 45 arranged outside the cuboid geometry. The guide recess area 45 has two plate or strip-shaped extension sections 46, 47 as well as a guide recess section 48. The extension sections 46, 47 form guide surfaces arranged parallel to one another, while the guide recess section on the inside forms a cylinder segment-shaped guide surface 49. The guide surface 49 forms a guide recess 50 or (open-edged) guide bore. The guide recess area 45 extends over the entire extent of the associated ribs 37 in the direction of the crimping axis 105 and has a constant cross section over the entire extent.

• die Gesenkhälften 5 der beiden Gesenkhälfteneinheiten 2, 3 gemeinsam verdreht werden um die Drehachse 35,
• eine Verschiebung der Gesenkhälften 5 der Gesenkhälfteneinheiten 2, 3 quer zur Crimpachse 105 und in Haupterstreckungsebene der Rippen 37 begrenzt oder unterbunden wird und/oder
• eine Abstützung der Gesenkhälften 5 der Gesenkhälfteneinheiten 2, 3 in eine Richtung vertikal zur Haupterstreckungsebene der Rippen 37 bereitgestellt wird. ###

To form a guide 51, when the crimping pliers die 1 is installed, a guide rod 43 of the die half 5 of one die half unit 2 is received in a guide recess 50 of one die half 5 of the other die half unit 3 and vice versa. By means of the guide 51 it can be ensured that

• the die halves 5 of the two die half units 2, 3 are rotated together about the axis of rotation 35,
• a displacement of the die halves 5 of the die half units 2, 3 transversely to the crimping axis 105 and in the main plane of extent of the ribs 37 is limited or prevented and / or
• a support of the die halves 5 of the die half units 2, 3 is provided in a direction vertical to the main plane of extent of the ribs 37. ###

Optionally, at least one die half 5 of the crimping pliers die 1 can have a stop body 52. The stop body 52, which is preferably a stop disk, is rotatably mounted on a base body or a rib 37 of the die half 5 via a stop body pivot bearing 53, the stop body pivot bearing 53 having a stop body pivot axis 54 which is vertical to Main plane of extent of the ribs 37 is oriented. For the exemplary embodiment shown, the stop body pivot bearing 53 is formed with a stop body bearing extension 55 which extends from the base body or the rib 37 of the die half 5 and has an end stop body annular groove 56. The stop body 52 has a stop body pivot bearing bore 57. In the assembled state, the stop body bearing extension 55 of the die half 5 extends through the stop body pivot bearing bore 57 of the stop body 52 The stop body 52 is axially secured to the die half 5. For this purpose, the stop body 52 is caught axially between the stop body securing element 58 and the base body or the rib 37 of the die half 5.

The stop body 52 has several insertion stops 60a, 60b distributed over the circumference around the stop body rotation axis 54, which can be brought into an operating position at different relative angles of rotation of the stop body 52 relative to the die half 5 around the stop body rotation axis 54 each specify an insertion position for inserting a workpiece into the die holder 38. It is possible here for the insertion stops 60a, 60b to have different through recesses as shown, which for example can be conical on the side facing away from the die half 5 or can also have an elongated cross-section deviating from a circular cross-section with beveled guide surfaces. It is also possible for the individual insertion stops 60 to have different stop positions with respect to the stop body axis of rotation 54, the different stop positions resulting in a Wire end sleeve is inserted differently into the die holder 38. The different insertion positions can then ensure, for example, that an inner end region of a wire end sleeve is located at a predetermined point on the die receptacle 38, in particular in a predetermined position relative to the ribs 37.

Optionally, the crimping pliers die 1 has a stop body latching device 61 for the illustrated embodiment. For this purpose, the die half 5 has a recess 62 at the bottom of which is a spring 63 and a stop body latching element 64 via the spring 63, here in the form of Locking ball 65 is supported. On the side facing the die half 5, the stop body 52 has several stop body latching recesses 66 distributed over the circumference, into which the stop body latching element 64 can latch in the different operating positions of the insertion stops 60.

In Fig. 4 and 5 a crimping pliers 67 (without front fixed pliers part plate) is shown, in which the die half units 2, 3 of the crimping pliers die 1 are mounted on pliers jaws 68, 69. Here shows Fig. 5 a detail IV of the connection area of the crimping pliers die 1 with the pliers jaws 68, 69. The pliers jaws 68, 69 each form a bearing eye 70 which, with the bearing body 7 of the die half units 2, 3, forms a pivot bearing 71 with a pivot axis 72 that extends vertically to the plane of the drawing according to Fig. 4 and 5 and is oriented vertically to the pivot plane of the jaws 68, 69. The bearing eye 70 has a bearing bore 73 with an edge opening 74. As a result of the edge opening 74, the bearing bore 73 is formed in the shape of a cylinder segment with a segment angle greater than 180 °, for example in the range from 190 ° to 240 °. The lateral boundaries 75, 76 of the edge opening 74 are therefore at a distance that is smaller than a guide diameter of the bearing bore 73. In order to introduce the bearing body 7 of the bearing part 6 into the bearing eye 70, the bearing body 7 of the die half unit 2 (without the other die half unit held on it 3) opposite the position in Fig. 5 rotated vertically to the pivot plane of the jaws 68, 69 so that the bearing body 7 with the insertion surface 21, here the flat 22, can pass the edge opening 74. If the bearing body 7 is then located in the bearing eye 70, the bearing body 7 can be pivoted vertically to the pivot plane of the tong jaws 68, 69 in such a way that the insertion surface 21 is arranged in the interior of the bearing eye 70. The larger guide diameter of the cylinder segment-like guide surface 20 of the bearing body 7 prevents the bearing body 7 from emerging again from the bearing eye 70 for this angle of rotation and adjacent angles of rotation passed through during the crimp stroke Insertion of the same into a bearing eye 70 and an exit from the same is possible, selected so that this angle of rotation for assembled crimping pliers 67 with the crimping pliers die 1 held on it is never reached, but this angle of rotation is only possible for at least partially dismantled crimping pliers 67.

Fig. 6 shows a possible embodiment of a crimping pliers 67, in which a crimping pliers die 1 can be used, in an exploded view. The crimping pliers have a fixed pliers part 67. The fixed pliers part 67 forms a fixed hand lever 68. The fixed tong part 67 has a front and a rear fixed tong part plate 79. On the fixed pliers part 77, an elastic pliers jaw 81 is pivotably supported via a pivot pin 80, preferably in the area of the hand lever 78. In addition, the elastic tong jaw 81 is pivotably mounted on the fixed tong part 77 via a further pivot pin 82. Here, the pivot pin 82 can alternatively be arranged in the area of a first longitudinal extension 83 or a second longitudinal extension 84 of the elastic pincer jaw 81. The first longitudinal extension can, for example, correspond approximately to half the longitudinal extension of the elastic pincer jaw 81, while the second longitudinal extension 84 can be arranged, for example, at a distance of 1/3 to 1/4 of the elastic pincer jaw 81 from the pivot pin 80. The elastic pincer jaw 81 thus has a freely protruding pincer jaw section 85, in the free end region of which the bearing eye 70 is arranged. The elasticity, in particular the stiffness of the material and / or the cross-section and the geometrical moment of inertia of the elastic pincer jaw 81 are / is selected such that with sufficiently large crimping forces an elastic bending or evasive movement of the elastic pincer jaw 81 and with this of the bearing eye 70 can take place. In this way, a force-displacement compensation element 86 is provided.

A movable hand lever 87 is articulated in one end area via a pivot bearing 88 with a pivot pin 89 on a movable pliers jaw 90. The movable tong jaw 90 is also pivotably mounted on the fixed tong part 77 via a pivot bearing 91 with a pivot pin 92. The movable hand lever 87 is also connected to a pressure lever 95 via a pivot bearing 93 with a pivot pin 94. The pressure lever 95 is articulated in one end area via a pivot bearing 96 with a pivot pin 97 on the fixed pliers part 77. An opening spring 104 acts between the movable pincer jaw 90 and the elastic pincer jaw 81. The movable hand lever 87, the pressure lever 95 and the articulation of the movable hand lever 87 on the movable pliers jaw 90 form a toggle lever drive 98. A toggle joint 99 of the toggle lever drive 98 is formed by the pivot bearing 93, while a first toggle lever is formed by the pressure lever 95 in the section between the pivot bearings 93, 96 and a second toggle lever is formed by the movable hand lever 87 in the section between the pivot bearings 88, 93 is formed. The movable pincer jaw 90 and the elastic pincer jaw 81 each form a bearing eye 70 in the end regions in the area of a pincer jaw. The bearing bodies 7 of the die half units 2, 3 of the crimping pliers die 1 are then mounted in the bearing eyes 70.

In Fig. 6 and 7th it can be seen that the crimping pliers 87 are designed as a plate construction, whereby individual plates can be constructed multiple times.

The crimping pliers 67 also has a compulsory lock 100 for the illustrated embodiment. The compulsory lock 100 prevents the crimping stroke from being possible even with several partial crimping steps, with the crimping pliers 67 being prevented from opening by the automatic locking device 100 after the respective partial crimping steps. Rather, the automatic locking mechanism 100 only enables the crimping pliers 67 to be opened when the crimping stroke and thus all partial crimping stages have been completed in full. For the exemplary embodiment shown, the automatic locking mechanism 100 has an external toothing 101 of the pressure lever 95, a pawl 102 and a pawl spring 103.

Fig. 8 shows a crimping pliers 67 with the crimping pliers die 1 held thereon in an open position, while Fig. 9 shows the crimping pliers 67 in a closed position. It can be seen that in the open position the guide rods 43 of the die half units 2, 3 are partially arranged outside the guide recesses 50 of the die half units 2, 3 and a large cross section of the die holder 38 results, while in FIG Fig. 9 the guide rods 43 have further or completely entered the guide recesses 50 and a smaller cross section of the die holder 38 results. A connecting axis of the axes of rotation 72 of the two die half units 2, 3 forms a crimping axis 105, in the direction of which a crimping force is generated which is applied via the crimping surfaces 39, 40 to the outer surface of the workpiece, which is arranged in the die holder 38.

The configuration of the guide 51 can be used for any configurations of the die halves 5, in particular also for die halves 5 that are not embodied as rib dies with ribs 37.

For the exemplary embodiments shown in the figures, the thickening 42, which forms the guide rods 43, is formed from the lateral end region of a single rib 37. It is also possible within the scope of the invention for the thickening 42 to be formed jointly by the lateral end regions of two immediately adjacent or also spaced-apart ribs 37 or even more ribs 37.

For the exemplary embodiments shown in the figures, the guide recess 50 is formed by the lateral end regions of two adjacent ribs 37. It is also possible within the scope of the invention for the guide recess 50 to be formed only by a single rib 37, the lateral end region of which then encompasses the guide rod 43 from one side, or for the guide recess 50 to be formed by the end regions of two not immediately adjacent ribs 37 (or is even formed by more than two ribs 37).

For the embodiment shown in the figures, the pivot bearing 34, which enables the joint rotation of the die halves 5 about the pivot axis 35, is an integral part of the crimping pliers die 1 according to the invention the crimping pliers are hinged, which takes place for the illustrated embodiment with an additional degree of pivoting freedom. However, the invention also includes an embodiment of a crimping pliers die with two die half units 5, the crimping pliers die 1 then not forming the complete pivot bearing 34, but only a pivot bearing element 106 of the pivot bearing 34 for example a bearing eye such as the pivot bearing bore 30 (or a bearing pin).

REFERENCE LIST

1

Crimping pliers die

2

Die half unit

3

Die half unit

4th

Holding body

5

Die half

6th

Bearing part

7th

Bearing body

8th

attack

9

attack

10

web

11

web

12th

Guide surface

13th

Recess

14th

Recess

15th

Blind hole

16

Blind hole

17th

feather

18th

Locking element

19th

Locking ball

20th

Guide surface

21

Insertion area

22nd

Flattening

23

Guide surface

24

Locking recess

25th

Base plate

26th

Base plate

27

Storage process

28

Stub axle

29

Ring groove

30th

Pivot bearing bore

31

side slit

32

Fuse element

33

Circlip

34

Pivot bearing

35

Axis of rotation

36

Locking device

37

rib

38

Die holder

39

Crimping surface

40

Crimping surface

41

Extension section

42

thickening

43

Guide rod

44

Guide surface

45

Guide recess area

46

Extension section

47

Extension section

48

Guide recess portion

49

Guide surface

50

Guide recess

51

guide

52

Stop body

53

Stop body pivot bearing

54

Stop body rotation axis

55

Stop body bearing extension

56

Stop body ring groove

57

Stop body pivot bearing bore

58

Stop body securing element

59

Stop body retaining ring

60

Insertion stop

61

Stop body locking device

62

Recess

63

feather

64

Stop body locking element

65

Locking ball

66

Stop body locking recess

67

Crimping tool

68

Pincer jaw

69

Pincer jaw

70

Bearing eye

71

Pivot bearing

72

Axis of rotation

73

Bearing bore

74

Edge opening

75

Limitation

76

Limitation

77

fixed pliers part

78

fixed hand lever

79

fixed pliers part plate

80

Pivot pin

81

elastic pliers jaw

82

Pivot pin

83

first longitudinal extension

84

second longitudinal extension

85

Forceps jaw section

86

Force-displacement compensation element

87

movable hand lever

88

Swivel bearing

89

Pivot pin

90

movable jaws

91

Swivel bearing

92

Pivot pin

93

Swivel bearing

94

Pivot pin

95

Pressure lever

96

Swivel bearing

97

Pivot pin

98

Toggle lever drive

99

Knee joint

100

Compulsory lock

101

External gearing

102

Pawl

103

Pawl spring

104

Opening spring

105

Crimping axis

106

Pivot element

Claims (15)

Crimping pliers die (1) with two die half units (2, 3) which have die halves (5) which are moved relative to one another via a crimping stroke along a crimping axis (105), and each have a pivot bearing element (106) or with which one Rotation of the die halves (5) around an axis of rotation (35) oriented coaxially or parallel to the crimping axis (105) is ensured,
characterized in that
a stop body (52) is present which a) is rotatably mounted on a die half (5) via a stop body pivot bearing (53) around a stop body pivot axis (54), the stop body pivot axis (54) being oriented parallel to a receiving axis of a die holder (38) formed by the die halves is and b) has at least two insertion stops (60a, 60b, ...) which are arranged distributed over the circumference around the stop body axis of rotation (54). Crimping pliers die (1) according to claim 1, characterized in that a stop body latching device (61) or stop body locking device is provided which latches or locks the stop body (52) at predetermined stop body rotation angles with respect to the die half (5). Crimping pliers die (1) according to Claim 2, characterized in that a) the stop body (52) and the die half (5) have stop body guide surfaces, aa) which are oriented vertically to the stop body rotation axis (54) and ab) on which the stop body (52) and the die half (5) are guided against each other during the rotation about the stop body axis of rotation (54), b) wherein a stop body guide surface has a recess (62) in which a stop body latching element (64) or stop body locking element acted upon by a spring (63) is arranged, and c) the other stop body guide surface has stop body latching recesses (66a, 66b, ...) or stop body locking recesses in which the Stop body latching element (64) or stop body locking element is arranged in the predetermined relative stop body rotation angles for latching or locking. Crimping pliers die (1) according to one of claims 1 to 3, characterized in that the die half (5) has a stop body bearing extension (55) which extends through a stop body pivot bearing bore (57) of the stop body (52) and on the side of the stop body (52) facing away from the die half (5) has an axial securing element (58). Crimping pliers die (1) according to one of claims 1 to 4, characterized in that the die half units (2, 3) are guided relative to one another over the crimping stroke by means of a guide (51), the guide (51) at least one on a die half unit (2; 3) has held guide rod (43) which is guided in a guide recess (50) of the other die half unit (3; 2). Crimping pliers die (1) according to one of Claims 1 to 5, characterized in that the crimping surfaces (39, 40) of the die halves (5) are formed from end faces of interlocking ribs (37). Crimping pliers die (1) according to Claim 6 in relation to Claim 5, characterized in that the guide rod (43) is formed by a thickening (42) in the end region of at least one rib (37) of a die half (5). Crimping pliers die (1) according to Claim 7, characterized in that the guide recess (50) is formed by a guide recess region (45) which extends from an end region of at least one rib (37) of a die half (5), the guide recess region ( 45) forms a guide recess (50) with an open-edged cross-section with a guide surface (49) in the form of a cylinder segment. Crimping pliers die (1) according to one of the preceding claims, characterized in that at least one die half unit (2; 3) has a bearing part (6), by means of which the die half unit (2; 3) can be pivoted about a vertical to a pivot plane of a pliers jaw ( 68; 69) arranged pivot axis (72) on the gripper jaw (68; 69) can be mounted, the bearing part (6) in particular having a bearing body (7) with a cylinder segment-like guide surface (20) with a guide diameter and an insert surface (21) in which the extension of the bearing body (7) is smaller than the guide diameter. Crimping pliers die (1) according to one of the preceding claims, characterized in that a) the die half unit (2; 3) has a holding body (4) and b) the die half (5) is mounted on the holding body (4) so as to be rotatable about the axis of rotation (35) via a pivot bearing (34). Crimping pliers die (1) according to claim 10, characterized in that a latching device (36) or locking device is arranged between the holding body (4) and the die half (5), which the die half (5) at predetermined relative angles of rotation between the holding body ( 4) and the die half (5) latched or locked around the axis of rotation (35). Crimping pliers die (1) according to Claim 11, characterized in that a) the holding body (4) and the die half (5) have guide surfaces (12; 23), aa) which are oriented vertically to the axis of rotation (35) and ab) on which the holding body (4) and the die half (5) are guided against each other during the rotation about the axis of rotation (35), b) wherein a guide surface (12) has a recess (13; 14) in which a latching element (18) or locking element acted upon by a spring (17) is arranged, and c) the other guide surface (23) has latching recesses (24) or locking recesses in which the latching element (18) or locking element is arranged at the predetermined relative angles of rotation for latching or locking. Crimping pliers die (1) according to one of Claims 10 to 12, characterized in that the holding body (4) has a bearing extension (27) which extends through a rotary bearing bore (30) in the die half (5) to form the rotary bearing (34). and has an axial securing element (32). Crimping pliers (67) with pliers jaws (68, 69) on which die half units (2, 3) of a crimping pliers die (1) according to one of the preceding claims are held. Crimping pliers (67) according to Claim 14, characterized in that at least one die half unit (2; 3) is supported via a force-displacement compensation element (86).

Images