Press jaws and methods for producing a compressed block and methods for pressing with press jaws

Description

field of technology

[0001] A pressing tongs with a first and a second pressing jaw is described and disclosed, wherein the pressing jaws are designed to move relative to one another in a direction of travel, wherein each pressing jaw has ribs, wherein the ribs are designed with a longitudinal extension transverse to the direction of travel of the pressing jaws and wherein insertion openings are left between adjacent ribs, wherein in the course of a pressing operation the ribs of the first pressing jaw are designed to move into the insertion openings of the second pressing jaw and the ribs of the second pressing jaw are designed to move into the insertion openings of the first pressing jaw, wherein the first and the second pressing jaw form a pressing mouth with an opening contour which is formed by free peripheral edges of the ribs, and wherein the ribs form an intersection point which migrates in the direction of the longitudinal extension during a pressing operation.

[0002] Also described and disclosed is an arrangement comprising a first and a second pressing jaw, wherein the pressing jaws are designed to move relative to one another in a direction of travel, wherein each pressing jaw has ribs, wherein the ribs are designed with a longitudinal extension transverse to the direction of travel of the pressing jaws and wherein insertion openings are left between adjacent ribs, wherein in the course of a pressing operation the ribs of the first pressing jaw are designed to move into the insertion openings of the second pressing jaw and the ribs of the second pressing jaw are designed to move into the insertion openings of the first pressing jaw, wherein the first and the second pressing jaw form a pressing mouth with an opening contour which is formed by free peripheral edges of the ribs, and wherein the ribs form an intersection point which migrates in the direction of the longitudinal extension during a pressing operation.

[0003] Also described and disclosed is a pair of pressing jaws having a first and a second pressing jaw, wherein the pressing jaws are designed to move relative to one another in a direction of travel, wherein each pressing jaw has ribs, wherein the ribs are designed with a longitudinal extension transverse to the direction of travel of the pressing jaws and wherein insertion openings are left between adjacent ribs, wherein in the course of pressing the ribs of the first pressing jaw are designed to move into the insertion openings of the second pressing jaw and the ribs of the second pressing jaw are designed to move into the insertion openings of the first pressing jaw, wherein the first and the second pressing jaw form a pressing mouth with an opening contour which is formed by free peripheral edges of the ribs.

[0004] Also described and disclosed is a method for producing a compact, comprising: providing a first and a second pressing jaw, each pressing jaw having ribs, the ribs being formed with a longitudinal extension transverse to a direction of travel of the pressing jaws, and insertion openings being left between adjacent ribs, the ribs of the first pressing jaw being formed to insert into the insertion openings of the second pressing jaw during pressing, and the ribs of the second pressing jaw being formed to insert into the insertion openings of the first pressing jaw, the first and the second pressing jaw forming a pressing mouth with an opening contour formed by free peripheral edges of the ribs, and the ribs forming an intersection point which migrates in the direction of the longitudinal extension during pressing. State of the art

[0005] Crimping pliers and crimping jaws of the type in question, which may also be referred to as crimping pliers, are known and are used, for example, for crimping wire end ferrules onto stripped conductor ends. The crimping jaws are designed to move into each other in a comb-like manner during the crimping process, with ribs of one crimping jaw being able to move into slot-like insertion openings in the other crimping jaw. Each crimping jaw preferably has a plurality of ribs arranged one behind the other perpendicular to the insertion direction of the crimping jaws and spaced apart from one another. The insertion openings are preferably formed in the spacing areas between the ribs of the respective other crimping jaws.

[0006] Furthermore, it is known in this context that the ribs of both pressing jaws delimit a substantially square opening contour of the pressing mouth, wherein the opening contour preferably decreases uniformly with regard to its edge lengths and the cross-sectional area of ​​the pressing opening as the pressing jaws or their ribs move into one another.

[0007] The opening contour defines the opening area of ​​the press jaw. In conventional pressing tongs or pressing jaws, intersection points, projected into the opening area, are integrated into the opening contour between the ribs of the other pressing jaw that retract into the entry openings of one pressing jaw and the ribs of one pressing jaw that leave the entry openings between them. In a depth direction of the press jaw, perpendicular to the opening area, a multitude of such intersection points arise depending on the number of ribs. These intersection points are generally aligned one behind the other in the depth direction. A connecting line between the intersection points is preferably represented as a point in the opening contour.The intersection points, or the point representing the intersection points, of the opening contour move, or move, as part of the inwardly moving area of ​​the opening contour as the pressing jaws move into each other, from the outside to the inside, toward the center of the opening surface, and beyond that, in the direction of the longitudinal extension of the ribs. Typically, there are two such intersection points, or points, of the opening contour, which essentially move toward each other as the pressing jaws move into each other.

[0008] Known pairs of crimping jaws with the rib-like structure described here, which are primarily used for crimping wire end ferrules, are designed so that the crimping jaws can be completely separated. This can lead to difficulties in matching the crimping jaws. A further disadvantage can arise with electric-motor or hydraulically operated crimping tools equipped with such crimping jaws. The separation of the jaws of this tool, in which the crimping jaws are in turn held, can result in an undesirably large opening position.

[0009] The above-described, known features of a pressing tongs or a pressing jaw or a pair of pressing jaws may also be important within the scope of the innovative embodiments described and disclosed here and may be included individually or in combination in a claim.

[0010] A pressing tong with such pressing jaws is known, for example, from EP 3 179 580 A1. Using such pressing jaws, a method for producing a compact is also known, as is a method for pressing with pressing jaws having ribs. During pressing, a non-uniformity of the compact can arise at the intersection points of previously known pressing jaws, for example, due to material from the compact being displaced between the interlocking ribs. This problem occurs particularly with comparatively large opening contours.

[0011] US 2017 / 210 056 A1 discloses a pressing tong and a pair of pressing jaws in which a stamping part is arranged in a flat area of ​​a pressing jaw perpendicular to the direction of travel. The converging ribs, forming an intersection point, are incorporated into the opening contour, including the intersection point that moves during pressing.

[0012] From DE 25 48 901 A1 a hand-held device for crimping end sleeves on cable ends is known, in which the pressing jaws are held by spring arms acting in the pressing direction, which press the pressing jaws together when released. Summary of Revelation

[0013] In view of the prior art described, the object of the disclosed device is to provide a pressing tong or pressing jaws of the type in question, with which the best possible pressing result can be achieved even with comparatively large pellets. Ideally, the same pressing jaws should be able to achieve a good pressing result with both smaller and larger pellets.

[0014] The solution to the problem is initially given in a pressing tongs in which it is based on the fact that a supplementary pressing part is provided between the ribs of the first pressing jaw and the ribs of the second pressing jaw, that the supplementary pressing part forms part of the opening contour, that the supplementary pressing part has an extension transverse to the longitudinal extension of the ribs, that the supplementary pressing part extends at least in overlap with two of the ribs of the first pressing jaw and the second pressing jaw and that the intersection point is outside the opening contour.

[0015] Such a design allows for an advantageous pressing result, particularly with comparatively large compacts. Furthermore, with such a design, both comparatively small and comparatively large compacts can be pressed in the same pressing jaws without the need to replace the pressing jaws. It is also preferred that the pressing is performed or can be performed in a force-controlled manner, particularly with pressing jaws that have a supplementary pressing part, as described here. Regarding force-controlled pressing, reference is made, for example, to WO 2014 / 108361 A1.Among other things, it is important that, when hydraulically actuating a press jaw, partial pistons are provided in the same hydraulic cylinder. A press part or a press jaw exerts a maximum pressing force only at a pressing end position within a first partial travel path, and a partial pressing force that is lower than the maximum pressing force is only exerted at a pressing end position within a second partial travel path following the first partial travel path. The partial pressing forces are preferably assigned to each partial piston.

[0016] With regard to an arrangement comprising a first and a second pressing jaw for use in a pressing tongs, the object is achieved with regard to an advantageous design of the pressing jaws in that a supplementary pressing part is provided which forms a part of the opening contour in addition to the ribs, that the supplementary pressing part is arranged transversely to the edge edges in overlap with several ribs, and that the intersection point is outside the opening contour.

[0017] With regard to the pair of pressing jaws with a first and a second pressing jaw, it is preferred that the pressing jaws are directly connected to one another, so that, due to the connection, the pressing jaws can only be moved relative to one another during an opening movement up to one end of a largest travel distance, at which the connection of the pressing jaws is still present.

[0018] A supplementary pressing part can be inserted into the pressing mouth, between the ribs of the first pressing jaw and the second pressing jaw, to form part of the opening contour of the pressing opening formed by the pressing jaws and the first and second pressing jaws can then be moved towards each other to carry out a pressing.

[0019] It can further be provided that the supplementary pressing part inserted into the pressing opening before the start of the pressing is used over a depth of the pressing opening, crossing at least two ribs of the same pressing jaw and (seen from the inside to the outside) overlapping the intersection point to form a supplementary part of the opening contour, and that the supplementary pressing part is moved relative to the ribs during the pressing.

[0020] The additional pressing part can be designed for preferred use in every pressing process, for example, as part of a pressing jaw. Alternatively, it can also be used selectively; for example, the additional pressing part can be a loose part that can be arranged in the area of ​​the pressing jaw to perform a pressing process.

[0021] By arranging the supplementary pressing part in the area of ​​the pressing mouth, the opening contour defined by the ribs can be partially modified by the supplementary pressing part. For example, a conventional rectangular, more preferably square, opening contour formed by the edge of the ribs can be changed into an opening contour deviating from this rectangular contour by using the supplementary pressing part, which covers a portion of the ribs and thereby modifies the opening contour. Furthermore, by arranging the supplementary pressing part, the intersection point of the ribs, which moves during the pressing process, can be virtually dissolved and changed into a plurality of contact points and into a supplemented part of the opening contour or an edge line determining the opening contour. Furthermore, the angle at which the edge edges and an edge of the supplementary pressing part meet can advantageously be designed to be relatively large.

[0022] With regard to the pressing of relatively large compacts, which is particularly possible with a design as described here, which can still be significantly larger even after pressing than comparatively small compacts before pressing, a substantially square opening contour is particularly preferred. By means of such a square opening contour, it can also be achieved that, at least with comparatively large compacts, during the pressing of a wire end ferrule outside of corner areas, the wire end ferrule folds inwards during the pressing process. This can advantageously improve the connection to the wires, both with regard to extraction force and with regard to an electrical connection.

[0023] Comparatively large pellets are in particular those whose cross-sectional area (before pressing) is larger than 10 mm 2<, further larger than 50 mm 2< up to approximately 200 or 250 mm 2< or even larger.

[0024] The supplementary pressing part, which is used in the manner of a fillet strip, preferably extends in a direction perpendicular to the direction of travel of the pressing jaws and in a depth direction of the pressing mouth, overlapping a plurality of ribs, in particular overlapping a plurality of ribs of both pressing jaws, and thus more preferably over at least two ribs of a pressing jaw. In a preferred embodiment, the supplementary pressing part can extend substantially over all ribs of a pressing jaw or over all ribs of both pressing jaws moved into one another during pressing. This overlap preferably occurs in the region of the intersection point which arises at the beginning of the overlap of the ribs of both pressing jaws and which moves inwards with respect to the pressing mouth during the pressing process, corresponding to the gusset which arises between the ribs of the two pressing jaws as the pressing jaws move into one another.Due to the overlap, the intersection point is shifted outside the opening contour.

[0025] The change in the opening contour caused by the additional pressing part leads to a corresponding change in the pressing contour of the pressed part. Thus, the portion of the opening contour defined by the additional pressing part is preferentially reflected in the pressing contour of the pressed part.

[0026] The supplementary pressing part can advantageously improve the production of a compact, particularly due to the supplementary pressing part covering the gusset area of ​​the press opening that defines the intersection point. Thus, by appropriately positioning the supplementary pressing part, unwanted burr formation on the compact in the gusset area of ​​the press opening can be counteracted. By covering the intersection point or gusset area as described above, and removing it from the opening contour, the compact is prevented from being partially pressed into the entry openings between the ribs during the pressing process and the associated interlocking of the ribs of both press jaws, which would result in unwanted burr formation.

[0027] By inserting an additional pressing part with respect to the length of the compact viewed perpendicular to the insertion direction, relatively long compacts can be produced with respect to the depth direction of the press jaw, correspondingly using a press jaw with a matching number of ribs. Thus, press jaws can be used with more than ten consecutive ribs, for example, up to twenty or thirty or more.

[0028] With respect to the opening area of ​​the press opening defined by the opening contour, two intersection points that essentially move toward each other during the pressing process are preferably formed in the case of an opening area that is usually rectangular, or possibly square, without the additional pressing parts. Therefore, the arrangement of two additional pressing parts covering the intersection points is preferably provided.

[0029] The object regarding an advantageous embodiment of the pair of pressing jaws according to a further embodiment described and disclosed here can be achieved by directly connecting the pressing jaws to one another, so that the pressing jaws cannot be moved relative to one another beyond a maximum travel distance without breaking the connection. This configuration of the pressing jaws is also relevant for corresponding pressing jaws in which no additional pressing part is provided in the sense described here.

[0030] Such a design results in a defined end-of-travel position of the pressing jaws, particularly in a starting position of the pressing jaws, in which the maximum size of the pressing opening is achieved. The connection of the pressing jaws to one another prevents further displacement of the pressing jaws beyond this end-of-travel position. During an opening movement, the pressing jaws can only be moved to the end of a maximum travel distance, at which the connection of the pressing jaws is still maintained.

[0031] In this defined end-of-travel position, the ribs of the pressing jaws can still interlock in a comb-like manner. The defined travel position can also be a position of the pressing jaws relative to each other in which the ribs of one pressing jaw have completely protruded from the insertion openings of the other pressing jaw.

[0032] The connection also allows the pressing jaws to be permanently connected to one another. This is ideal, for example, for interchangeable pressing jaws that can be assigned either to a corresponding tool or a handheld device for producing a pressing.

[0033] The pressing jaws can be part of a hand tool, for example a pliers-like hand tool or part of a pressing device, for example a hydraulically actuated pressing device, or can be assigned to such a hand tool or such a pressing device in the form of interchangeable pressing jaws.

[0034] The features of the above-described independent claims are essential both individually and in any combination with each other, whereby further features of an independent claim can be combined with the features of another independent claim or with features of several independent claims, and further also with only individual features of one or more of the other independent claims.

[0035] Further features are explained below, also in the description of the figures, often in their preferred association with the subject matter of claim 1 and / or one or more of the further independent claims or with features of further claims. However, they may also be important in an association with only individual features of claim 1 and / or one or more of the further independent claims or of the respective further claim, or each independently.

[0036] The supplementary pressing part can be arranged to be movable relative to the rib in order to move with the intersection point of the opening contour during the pressing process or during the interlocking of the pressing jaws. The intersection point or the gusset resulting in this area between the ribs of both pressing jaws is preferably always covered by the supplementary pressing part during the pressing process. The supplementary pressing part can move in particular along the edge edges of the ribs that are directed in opposite directions in the direction of travel of the pressing jaws and intersect at the intersection point, optionally, as is also preferred, with the supplementary pressing part supported on at least one of these edge edges. As the pressing jaws move into one another, a sliding movement of the supplementary pressing part along the edge edges of the ribs preferably results.

[0037] In a further embodiment, the cross-section of the supplementary pressing part in its areas adjacent to the ribs can correspond to the legs of a triangle. Corresponding surfaces of the supplementary pressing part, which form the legs in a cross-sectional view, can enclose a 90° angle to one another, particularly in the case of a square opening area of ​​the pressing opening without a supplementary pressing part. The surfaces of the supplementary pressing part can also enclose an angle of less than 90 degrees or an angle of more than 90 degrees to one another, for example an angle of 60 to 120 degrees, depending on the angle defined by the edge edges of the ribs of both pressing jaws intersecting at the intersection point.

[0038] The cross-sectional edge of the supplementary pressing part connecting these surfaces can run straight, like a hypotenuse, preferably essentially aligned in the direction of travel of the pressing jaws. This edge can also run, for example, outwardly or alternatively inwardly along a curved line, resulting in a convex or concave curvature of the edge.

[0039] The supplementary pressing part can initially be held by a spring connection to an edge area of ​​a pressing jaw or a tool part holding a pressing jaw.

[0040] The supplementary pressing part can also be held in a form-fitting manner on the first and / or second pressing jaw. This form-fitting holder allows the mobility of the supplementary pressing part as the pressing jaws move into one another. The supplementary pressing part can thus be held captively on at least one pressing jaw, if necessary, and thus be a component of one or both pressing jaws. According to one possible embodiment, the form-fitting connection can be removed, if necessary without tools, for example to exchange the supplementary pressing part for a supplementary pressing part with a different opening contour or to enable pressing without the supplementary pressing part. The form-fitting holder can also be non-removable, i.e. in any case can only be removed by destruction, whereby the supplementary pressing part always remains a component of at least one of the pressing jaws.

[0041] For the form-fitting retention, the supplementary pressing part can have one or more retention arms that extend from the supplementary pressing part, relative to the opening contour, to the outside of the opening contour. Two such retention arms can be provided on the supplementary pressing part for this purpose, whereby, according to a preferred embodiment, each pressing jaw can be assigned a retention arm of the supplementary pressing part to form the form-fitting retention.

[0042] Thus, at least one pressing jaw, preferably both pressing jaws, can have one or more holding surfaces along which a holding arm of the supplementary pressing part can slide during pressing. The holding surfaces can each be assigned to the ribs, optionally running parallel to and at a distance from the edges defining the opening contour. The holding surfaces preferably form sliding surfaces for the holding arms. Due to this sliding form-lock connection, the supplementary pressing part can be held in the covering position of the intersection point and in its alignment within the opening contour, regardless of the insertion depth of one pressing jaw into the other pressing jaw.

[0043] The support surface can run essentially parallel to an associated rib edge to ensure precise positioning and alignment of the supplementary pressed part.

[0044] The support arm can further comprise a support projection, which can preferably extend at right angles to the support arm. This support projection, in particular, enables the positive connection to be achieved, allowing the additional pressed part to be displaced along the mutually facing edges of the ribs. The support projection can be formed integrally and, if appropriate, of the same material as the support arm, which support arm can further preferably be formed integrally and, if appropriate, of the same material as the additional pressed part.

[0045] In a preferred embodiment, the holding projection cooperates with the holding surface of the pressing jaw to create a slidingly displaceable form-fitting holding of the supplementary pressing part on the pressing jaw.

[0046] Before pressing begins, the supplementary pressed part can be provided with a structure serving to convey information on the surface forming part of the opening contour. The supplementary pressed part can be used, for example, to emboss information into the pressed piece in plain text or in the form of a code, or optionally alternatively or in combination with this, for example in the form of geometric shapes. In this case, it can be exploited that a relevant surface, in particular the hypotenuse surface, of the supplementary pressed part does not dip below one of the ribs relative to the pressed piece during pressing. The surface of the supplementary pressed part forming part of the opening contour remains unchanged in its effect on the pressed piece during pressing. This characterization is also important regardless of whether the supplementary pressed part is used to convey information.

[0047] With regard to the possible direct connection of the pressing jaws to one another, one of the pressing jaws can have a through-hole outside the pressing opening, and the other pressing jaw can have an elongated hole. This elongated hole is preferably aligned in the retraction direction of the pressing jaws. The through-hole of one pressing jaw is preferably captured and guided in the elongated hole of the other pressing jaw. Due to this arrangement, two limit-limited distortions can arise with regard to the sliding displacement of the pressing jaws relative to one another: an insertion end position with the smallest possible pressing jaw opening area and an extension end position with the largest possible pressing jaw opening area. Short description of the drawings

[0048] A further disclosure and explanation is provided below with reference to the accompanying drawings, which, however, merely represent exemplary embodiments. A part that is explained only with reference to one of the exemplary embodiments and is not replaced by another part in another embodiment due to the special feature highlighted therein is thus also described for this other embodiment as a possible existing part. The drawing shows: Fig. 1 shows a perspective view of a pressing tongs, comprising the pressing jaws described here in a first embodiment; Fig. 2 shows the area of ​​the pressing tongs comprising the pressing jaws in an enlarged side view; Fig. 3 shows the view towards the area of ​​the pressing device according to arrow III in Figure 2 ; Fig. 4the section along the line IV - IV in Figure 2 ; Fig. 5the section according to Figure 4in perspective view; Fig. 6 the pressing jaws with assignable supplementary pressing parts in perspective individual views; Fig. 7 the supplementary pressing part in an individual view; Fig. 8 the side view of the supplementary pressing part according to the arrow VIII in Figure 7 ; Fig. 9 the opposite side view against the supplementary pressing part according to the arrow IX in Figure 7 ; Fig. 10 the supplementary pressing part in a perspective view; Fig. 11 the pressing jaws with supplementary pressing parts in a partially sectioned perspective view; Fig. 12 the pressing jaws in a view according to Figure 3 , with a compact placed in a pressing mouth formed by the pressing jaws; Fig. 13 one of the Figure 12 corresponding illustration, but concerning an intermediate position during pressing; Fig. 14 another of the Figure 12 corresponding representation, but after completion of the pressing; Fig. 15 the enlargement of the area XV in Figure 14 ; Fig. 16 a compact formed using the pressing jaws of the first embodiment in perspective view; Fig. 17 the front view of the compact according to arrow XVII in Figure 16 ; Fig. 18one of the Figure 17 corresponding representation, but with reduced cross-section; Fig. 19 a further representation according to Figure 17 , with further reduction of the cross-section; Fig. 20one of the Figure 3 substantially corresponding representation, relating to a second embodiment; Fig. 21 in perspective representation of a pressing tongs with pressing jaws described here in a third embodiment; Fig. 22 the view towards the pressing tongs according to the arrow XXII in Figure 21; Fig. 23 the side view towards the pressing tongs according to the arrow XXIII in Figure 21 ; Fig. 24the section along the line XXIV-XXIV in Figure 23 ; Fig. 25 the pressing jaws of the third embodiment in perspective individual view; Fig. 26 the pressing jaws according to Figure 25in exploded perspective view with associated supplementary pressed parts; Fig. 27 the enlargement of area XXVII in Figure 26 ; Fig. 28 the pressing jaws with additional pressing parts in a partially sectioned perspective view; Fig. 29 one of the Figure 14 Corresponding representation after completion of a pressing, but relating to the third embodiment; Fig. 30 shows a compact formed using the pressing jaws of the third embodiment in a perspective view. Description of the embodiments

[0049] Shown and described is, firstly, with reference to the representation in Figure 1 , a preferably hydraulically actuated, in particular electro-hydraulically actuated pressing tong 1 in a preferably rod-like design.

[0050] The pressing tongs 1 initially and essentially comprise a drive unit 2, which can simultaneously form a gripping region 3. Such a drive unit 2 is known, for example, from WO 2014 / 108361 A1 (US 10 468 847 B2). Alternatively, the drive unit 2 can also comprise, for example, an electric motor spindle drive. A spindle-driven drive unit 2 is known, for example, from WO 2014 / 009363 A1 (US 9 993 885 B2). The content of these WO documents or US documents is hereby incorporated in its entirety into the disclosure of the present disclosure, also for the purpose of incorporating features of these WO documents or US documents into claims of the present invention.

[0051] A working head 4 is connected to the drive unit 2 at a free end of the pressing tongs 1. The working head 4 can be mounted interchangeably on the drive unit 2, for example, by a separation in the area of ​​a preferably provided hydraulic cylinder. Furthermore, as is also preferred, the working head 4 can be mounted so as to be freely rotatable about a working head longitudinal axis x relative to the drive unit 2 or a receptacle for the working head 4 in the drive unit 2.

[0052] The electrical supply, in particular of an electric motor driving a hydraulic pump or a spindle, but also of a control unit (not shown) and other electrical components in the pressing tongs 1 is preferably provided by the arrangement of an accumulator 5.

[0053] The grip area 3 can be designed to allow the user's hand to grasp the crimping pliers 1. For ergonomic reasons, an actuation button 6 is provided associated with the grip area 3. The actuation button 6 can be a depressible actuation button that can be actuated by a user to initiate a crimping operation.

[0054] In the working head 4, two pressing jaws 7 and 8 are arranged facing each other. One of the pressing jaws 7, 8, in the exemplary embodiment the first pressing jaw 7, is preferably fixed as a fixed jaw in a holding head 9 of the working head 4. The further, second pressing jaw 8, however, can be moved in the working head 4 towards the first pressing jaw 7 along the longitudinal axis x and accordingly relative to the pressing jaw 7 in a travel direction r, see also Figure 4. In the exemplary embodiment, the pressing jaw 8 is movably guided for this purpose. Upon appropriate actuation of the button 6, this movable pressing jaw 8 is displaced along the longitudinal axis x directly or indirectly by a driven hydraulic piston or the spindle in the direction of the stationary pressing jaw 7.

[0055] The fixed first pressing jaw 7 can, as is also preferred, be fixed in a form-fitting manner to the holding head 9. For example, a screw 10 can be used for this purpose, which is supported on a holding tab 11 of the holding head 9 and engages in an associated bore 12 of the pressing jaw 7 (see Figures 2 , 3 and 4 ).

[0056] The movable second pressing jaw 8 can also be connected in a form-fitting manner to the linearly displaceable element 16 (e.g., a hydraulic piston or spindle). For example, a pin-like clamping sleeve 13 can be provided for this purpose, which is seated in a bore 14 of the pressing jaw 8 oriented transversely to a retraction direction r and in a bore-shaped receptacle 15 at the end of the linearly displaceable element 16 of the drive unit part 2.

[0057] As in Figure 6As shown, the second pressing jaw 8 can have a preferably outwardly open groove 63 in the region of the side walls aligned in the direction of travel r, for example for guiding interaction with a rib-like projection (not shown) in the holding head 9. This can further prevent the movable second pressing jaw 8 from rotating. The first pressing jaw 7 can also have a preferably outwardly open groove 63 in the region of its side walls, which is aligned with the direction of travel r in order to interact with a rib-like projection (not shown) in the holding head 9.

[0058] In a pressing tong 1 according to the aforementioned EP 3 179 580 A1, the lever parts pivotable relative to one another, at whose ends the pressing jaws are arranged, result in a displacement of these ends along a circular path of comparatively large diameter. However, the intermeshing pressing jaws practically only move relative to one another in a linear direction r.

[0059] Each pressing jaw 7, 8 has a first group of spaced-apart ribs 17, which are attached to a base 19 of the respective pressing jaw 7, 8 or are formed integrally therewith. Each rib 17 has a longitudinal extension L, viewed transversely to the direction of travel r or transversely to the longitudinal axis x, and a vertical extension H, see Figure 11 , seen in the direction of travel r or parallel to the longitudinal axis x.

[0060] Each rib 17 preferably points in a direction perpendicular to the longitudinal extension L, for example as shown in Figure 3 , a generally triangular design. For example, according to the view Figure 3 the generally triangular design is formed by catheti that run in the longitudinal extent L and in the vertical extent H, and a hypotenuse directed inwards with respect to the holder head 9, which is given by a rib edge 18.

[0061] The edge edges 18 of the ribs 17 define an angle α relative to the longitudinal axis x. The edge edges 18 of the ribs 17 enclose this angle α in a projection perpendicular to the surface extension of the ribs 17 or to the longitudinal axis x. The angle α is preferably 45 degrees, although it can also be between, for example, 30 and 60 degrees, or further, for example, between 40 and 50 degrees.

[0062] The ribs 17 can be attached to the base 19 of each pressing jaw 7, 8, for example, due to a one-piece and preferably uniform material construction. The leg of the essentially preferably triangular rib 17 is preferably assigned to an outer peripheral edge of the pressing jaw 7, 8 or simultaneously forms it, at least partially. The leg further preferably extends vertically H. Starting from this outer peripheral edge or the leg, the peripheral edge 18 slopes downwards toward the free end of the other leg or toward the base 19.

[0063] The ribs 17 of the first group of ribs 17 of each pressing jaw 7, 8 are generally and substantially congruently arranged one behind the other, viewed perpendicular to the longitudinal axis x or perpendicular to the longitudinal extension L. The ribs 17 are spaced apart from one another in a direction perpendicular to the longitudinal extension L. The respective spacing in the previously described direction can substantially correspond to the thickness of a rib 17 viewed in the same direction. Accordingly, insertion openings 20 for ribs 17 of the opposite pressing jaw are formed between two ribs 17 of the aforementioned group.

[0064] With reference to a side view in which the generally and substantially triangular shape of the ribs 17 is evident, for example as in Figure 3As shown, the first group of ribs 17 is opposite one another with respect to the longitudinal axis x, resulting in a second group of ribs 17. Viewed in a direction perpendicular to the longitudinal extension L, this second group of ribs 17 is offset from the opposite group of ribs 17 of the same pressing jaw. The offset preferably corresponds to the thickness of a rib 17 of the first or second group. Accordingly, the ribs 17 of the first group are arranged at a distance from the arrangement of the ribs 17 of the second group of the same pressing jaw.

[0065] The edges 18 of the ribs 17 of the first and second groups of the press jaws form a right angle between them. This is with respect to a projection perpendicular to the longitudinal extension L.

[0066] A corner region 21 is formed by the edge edges 18 of both groups of ribs of a pressing jaw 7 or 8. The corner region 21 lies generally and essentially on the longitudinal axis x. The corner region 21 or the opposite corner region 21 can be penetrated by the longitudinal axis x. A corner region 21 can be rounded overall or, as also shown, provided with a chamfer (compare, for example, Figure 3 ). This can also be achieved by appropriately shaping the edge edges 18.

[0067] In a starting position of the pressing tongs 1 according to Figure 3 The movable pressing jaw 8 is shifted into a preferably stop-limited opening position. The mutually facing end faces 22 of both pressing jaws 7 and 8 can, as with respect to the initial position of the Figure 3illustrated, with reference to the projection described above, possibly extending in a common plane oriented transversely to the longitudinal axis x. In this initial position, one pressing jaw can also partially penetrate into the other pressing jaw in a comb-like manner, with partial regions of ribs 17 of one pressing jaw engaging the insertion openings 20 of the other pressing jaw.

[0068] Between the pressing jaws 7 and 8, a pressing mouth 23 is formed with a pressing opening 24. The pressing opening 24 extends in a depth direction, for example perpendicular to the longitudinal extension L. The edge edges 18 of the ribs 17 of both pressing jaws 7 and 8 define an opening contour K of the pressing opening 24, which opening contour K in the illustrated embodiment, as well as preferably, with reference to a view according to Figure 3has a generally square shape, optionally with chamfered corner regions 21 and, as described below, chamfer-like corner regions between ribs 17 of the pressing jaws 7 and 8, which slide past each other in a comb-like manner during pressing. The opening contour K delimits an opening area.

[0069] The pressing pliers 1 serve, for example, as is also preferred, for pressing pressed pieces 25, more preferably in the form of a wire end ferrule 26, which is placed over the stripped end of a cable 27. To press the wire end ferrule 26, for example, with the cable end, the pressed piece 25 is guided into the pressing mouth 23 such that a longitudinal extension of the pressed piece 25, here the wire end ferrule 26, is aligned essentially in the above-described projection direction perpendicular to the longitudinal extension L of the ribs 17 (cf. Figures 12 to 14 ).

[0070] As a result of preferably hydraulic or electromechanical displacement of the movable second pressing jaw 8 along the longitudinal axis x, in the direction of the fixed first pressing jaw 7, a reduction in the surface area of ​​the pressing opening 24 results from the comb-like intermeshing of the ribs 17 of both pressing jaws 7 and 8, while preferably maintaining the basic geometry of the pressing opening 24 or the opening contour K, preferably while maintaining the square opening contour K. The corner region 21 of the movable pressing jaw 8 migrates during the pressing process, with reference to the projection described above, along the longitudinal axis x in the direction of the corner region 21 of the fixed pressing jaw 7.

[0071] A first intersection point 28 results in the projection mentioned between the interlocking ribs 17 of the first group of pressing jaws 7 and 8. A second intersection point 28 results between the interlocking second groups of ribs 17 of the pressing jaws 7 and 8. The intersection point 28 is to be understood in relation to the graphic representation, approximately according to Figure 3, as the intersection point of the marginal edges 18 of the first and second pressing jaws 7, 8, which results when they are extended outwards. An imaginary straight line connection between the two resulting intersection points 28, the first and the second, in or parallel to the opening surface, runs in every pressing position, i.e. in every travel position of the movable pressing jaw 8, transversely to the longitudinal axis x. The intersection points 28 continue to move towards one another along the longitudinal extent L of the ribs 17 during the course of pressing.

[0072] In these gusset areas of the ribs 17, which have the intersection points 28, supplementary pressing parts 29 are inserted in order to improve the pressing geometry on the compact 25.

[0073] Both intended supplementary pressing parts 29 can, as is preferred, be designed identically.

[0074] In one embodiment, which is also preferred, each supplementary pressing part 29 is formed in a web-like manner. Further preferably, each supplementary pressing part extends, in an associated position with the pressing jaws 7 and 8, over the region of a plurality of ribs 17 of both pressing jaws 7 and 8. Further preferably, each supplementary pressing part 29 extends over all ribs 17 of the intermeshing groups of ribs. Accordingly, a supplementary pressing part 29 extends generally perpendicular to a surface of the pressing opening 24, which surface runs perpendicular to the depth direction of the pressing opening 24.

[0075] In a cross-section transverse to a longitudinal extent of the supplementary pressed part 29, a generally triangular outline contour of the supplementary pressed part 29 can result, as is also preferred, with two surfaces 30 which, in the use state, preferably lie flat against the edge edges 18 of the ribs 17. The surfaces 30 cover the intersection points 28 in the use state. The intersection points 28 are located behind the respective supplementary pressed part 29, as seen from the interior of the press opening 24. Due to the above-described orientation of the edge edges 18, the surfaces 30 preferably run in the cross-section corresponding to the legs of a triangle, more preferably at an angle of 90 degrees to one another, including this triangle.The surface 31 connecting the surfaces 30 and pointing in the use state towards the interior of the press opening 24 can, as shown, be formed in cross-section as a straight line, so that a triangular cross-section results, more preferably a right-angled triangle, in which the surface 31 is directed substantially in the retraction direction r.

[0076] The surface 31 is also referred to as the supplemented part of the opening contour K or the edge line delimiting the opening surface.

[0077] Alternatively, the surface 31 in the cross-section can also be defined by a line other than a straight line, for example, by a uniform or irregular curved line or by a combination of different line segments arranged in a row and together forming the surface 31. This can also result in a concave or convex shape of the surface 31, for example.

[0078] An irregular course of the edge line defining the surface 31 may also result in the cross-section, for example due to an applied or introduced structure 32. Such a structure 32 is shown, for example, with regard to the second embodiment in Figure 27 and can be used, for example, to emboss information onto the pressed part 25. Such a structure 32 can also be provided on only one of the two supplementary pressed parts 29.

[0079] Accordingly, the surface 31 can be designed uniformly or irregularly over the length of the supplementary pressed part 29, the latter for example in the area of ​​such a structure 32, wherein in the areas in front of and behind the structure 32 a uniform, for example straight, course of the surface 31 can optionally be provided.

[0080] In one possible embodiment, a first support arm 33 extends from one of the surfaces 30 and preferably has a support projection 34. The support projection 34 can protrude at one end and can further protrude at a right angle to the support arms 33. A second support arm 33 extends from the other of the surfaces 30 and has a support projection 34, also preferably at the end, which further preferably runs at a right angle thereto. The two support projections 34 then provided can extend in opposite directions.

[0081] The supplementary pressing parts 29 are preferably held in a form-fitting manner on the pressing jaws 7, 8, further preferably movable relative to the groups of ribs 17. For this purpose, the holding arms 33 engage between two ribs 17 of a group of a pressing jaw 7 or 8 through the preferably slot-shaped insertion opening 20 and engage behind a holding surface 35, preferably running parallel to the edge 18, of the rib 17 adjacent to the insertion opening 20 (cf. Figure 11 ). This results in a parallel guidance of the supplementary pressing part 29 while constantly covering or overlapping the associated intersection point 28 between the interlocking ribs 17.

[0082] The opposing supplementary pressing parts 29 are, like the intersection points 28, continuously moved or displaced towards each other during the pressing process into the interior of the pressing opening 24 along an imaginary line running transversely to the longitudinal axis x, while maintaining a constant orientation of the surface 31 facing the interior of the pressing opening 20. The latter, in a preferably rectilinear configuration, is more preferably always aligned parallel to the longitudinal axis x. Furthermore, the supplementary pressing parts 29 slide during the pressing process with their leg-like regions or surfaces 30 along the edge 18 of the ribs 17 (cf. Figures 12 to 14 ).

[0083] In a further embodiment, as shown in Figure 20The supplementary pressed parts 29 can be held, for example, by means of spring elements 26, furthermore, for example, in the form of cylindrical tension springs. This can replace the support arms 33. The spring elements 26 always load the supplementary pressed part 29 in the direction of the intersection point 28, but during the pressing process, overcoming the spring force, it can slide along the edge 18 and move transversely to the longitudinal axis x in the direction of the opposite supplementary pressed part 29.

[0084] By arranging the supplementary pressing part 29, the intersection point 28 is figuratively divided into a plurality of contact points 64 (see also Figure 15 ) or converted into an additional part of the edge K.

[0085] The length a of the surface 31 in cross section (compare for example Figure 3), ie essentially the length a removed in the direction of the longitudinal axis x between the free ends of the surfaces 30, can according to the illustrated embodiment approximately correspond to the length b of the chamfered corner region 21 viewed transversely thereto, and further, for example, approximately 0.5 to 2 times this length b. The length a of the surface 31 can also be approximately equal to or 0.5 to 2 times the length c of a peripheral edge 18 with the smallest possible press opening 24, up to 0.05 to 0.3 times the length c with the largest possible press opening 24, as shown, for example, in Figure 3 is shown.

[0086] For pressing, for example, a wire end sleeve 26 onto the stripped end of a cable 27, in particular by enclosing free wires 37 of the cable 27, by a wall 38 of the wire end sleeve 26 which is preferably circular-cylindrical in the unaffected state, the wire end sleeve 26 (pressed part 25) which is plugged onto the end of the cable 27 is inserted into the pressing mouth 23 between the pressing jaws 7 and 8 (see Figure 12 ). Due to the activation of the pressing tongs 1 and the associated linear displacement of the movable second pressing jaw 8 relative to the fixed first pressing jaw 7, a continuous and, with respect to the free edge lengths c of the edge edges 18 of the ribs 17, preferably uniform reduction of the pressing opening 24 results (cf. Figure 13 ), up to an intermediate position (not shown), in which the edge 18 comes into contact with the wall 38 of the pressed part 25 or the wire end sleeve 26.

[0087] The walls 38 of the wire end ferrules 26 are depicted here with a thickness that is sometimes significantly greater than the actual thickness. This is for clarity.

[0088] During the further movement of the movable pressing jaw 8 against the fixed pressing jaw 7, the wall 38 of the compact 25 is deformed according to the opening contour K (compare Figures 14 and 15 ). The resulting pressing contour P on the compact 25 essentially reflects the opening contour K of the pressing opening 24 (see also illustrations in the Figures 16 to 19 ).

[0089] The supplementary pressing parts 29, which always cover the intersection points 28 and the interlocking area between the comb-like ribs 17 of both pressing jaws 7 and 8 during the pressing process, prevent, particularly in the case of comparatively large-diameter compacts 25 or wire end ferrules 26, the displacement of wall material of a compact 25 between the ribs 17 sliding past each other, which could lead to undesirable burrs forming in these areas of a compact 25. The intersection points 28 are located outside the opening contour K.

[0090] Such burr formation is counteracted by the use of the supplementary pressed parts 29. Rather, chamfer-like surfaces 39 are also formed in these corner regions of the pressed part 25, which are essentially aligned transversely to the chamfer-like surfaces 40 formed by the correspondingly shaped corner regions 21 of the ribs 17. This further preferably results in a pressed cross-section of the pressed part 25 that is essentially in the form of an octagon.

[0091] In particular, by arranging the ribs 17 of both groups of a pressing jaw with a gap, indentations 41 preferably evenly spaced from one another can be created in the region of the previously described surfaces 40 in the longitudinal direction G of the compact 25, which longitudinal direction G during the pressing process corresponds to the depth direction of the pressing jaws 7 and 8 perpendicular to the longitudinal extension L of the ribs 17. This further deformation, particularly in the region of the surfaces 40, provides protection against the pressed compact 25, here the wire end ferrule 26, being pulled off the wires 37.

[0092] As can be seen from the press illustrations in the Figures 16 to 19As can be seen, the cross-sectional dimensions a' and b' of surfaces 39 and 40 remain the same, regardless of the original and pressed compact cross-section, with identical pressing jaws 7, 8 and identical supplementary pressing parts 29. Only the free edge lengths of the inclined surfaces 42 connecting these surfaces 39 and 40, formed by the edge edges 18 of the ribs 17, vary depending on the overall compact cross-section.

[0093] With regard to the compacts described here when pressed with pressing jaws which have a supplementary pressing part 29 in the sense described, but also independently thereof, in particular with generally rectangular and further in particular with generally square opening contours, it can advantageously be achieved that on edge edges 18 outside corner regions 21 as well as outside the intersection points 28 or optionally outside the supplementary pressing parts 29, a fold 65 is formed on the compact 25, compare for example Figure 15This is achieved with the edge 18 of the ribs 17 or the pressing contour K also being straight in this area. This fold 65 extends inwards and is essentially V-shaped in cross-section. This not only improves the resistance of the pressing sleeve or clamping sleeve 13 to being pulled out of the wires 37, but also provides more advantageous electrical contact. A height d, which indicates the penetration dimension starting from the straight surface of the opening contour inwards, can be one twentieth to one or two tenths of a dimension between two opposite straight areas of the opening contour.

[0094] The Figures 21 to 30show a further embodiment of a pressing tongs 1 and adapted pressing jaws 7 and 8. In particular, the design and mode of operation of the holding head 9 of this embodiment is known from WO 1999 / 019947 A1 (US Pat. No. 6,532,790 B2). The content of this WO document or US document is hereby incorporated in its entirety into the disclosure of the present application, also for the purpose of incorporating features of this WO document or US document into the claims of the present application.

[0095] The mounting head 9 of this embodiment is essentially constructed in three parts. One part is formed as an angled part 43 enclosing a long side, with a long side part 44, a narrow side part 45 extending at right angles thereto, and a long side section 46 running parallel to the long side part 44 but extending only approximately half its length. Consequently, the angled part 43 has a U-shape in a side view, with a longer leg—the long side part 44—and a shorter leg—the long side section 46.

[0096] The second part of the holding head 9 forming a rectangular guide comprises a longitudinal side part 47 with a width measured transversely to the direction of extension of the holding head 9, ie transversely to a longitudinal axis x of the pressing tongs 1, which width essentially corresponds to that of the angle part 43.

[0097] The third part of the mounting head 9 is formed as a second narrow side part 48, wherein in the illustrated embodiment, two narrow side parts 48 are provided spaced apart from one another. These are connected to one another via a flange 49 with a circular cross-section for arranging the mounting head 9 on a neck 50 of the drive unit part 2. Both the longitudinal side part 47 and the angle part 43 are pivotally mounted in the space formed between the narrow side parts 48.

[0098] For this purpose, both the narrow side parts 48 and a region of the long side part 47 and the free end of the longer U-leg of the angle part 43 are each penetrated by a bolt 51.

[0099] The longitudinal side part 47 of the mounting head 9 can be brought into overlap with the longitudinal side section 46 of the angle part 43, for which purpose the latter has a thickness that can correspond approximately to half the thickness of the longitudinal side part 47 in the joint area. The latter has an open-edged recess 52 on the underside associated with the longitudinal side section 46.

[0100] To fix the angle part 43 or its longitudinal side section 46, the longitudinal side section 46 is provided on the top side with an elongated projection 53, the front end region 54 of which, facing the narrow side part 45, is undercut (see Figure 24 ). This projection 53 enters a correspondingly shaped and aligned longitudinal slot 55 of the longitudinal side part 47, whereby this longitudinal slot 55 also has an undercut end zone 56. In the closed position according to Figure 24Thus, the angle part 43 is held in a form-fitting manner in the longitudinal slot 55 of the longitudinal side part 47 via its projection 53, so that the holder head 9 can only be opened intentionally.

[0101] The parts pivoted around the bolts 51 can be spring-loaded in the opening direction.

[0102] In the longitudinal side parts 44 and 47, and optionally also in the longitudinal side section 46 supplementing the longitudinal side part 47 on the inside, two or more grooves arranged side by side can be machined, extending in the longitudinal extension of the holding head 9, i.e., parallel to the longitudinal axis x of the pressing tongs 1, which longitudinal axis x can correspond to a piston axis of the drive unit part 2. These grooves can extend further over the entire length between the narrow side parts 45 and 48.

[0103] A carriage 57 is preferably arranged between the two narrow side parts 48, which is preferably connected at the rear to a drive element of the drive unit part 2, for example, to a hydraulic piston or a spindle. This carriage 57 serves in particular to support the movable pressing jaw 8 accommodated in the mounting head 9.

[0104] Press jaws 7 and 8 can be interchangeably accommodated in the holder head 9 designed in this way.

[0105] To secure the pressing jaws 7 and 8 in the mounting head 9, two fastening means 58 are provided, each assigned to the narrow sides. As shown, these can be designed as form-locking pins that can be displaced perpendicular to the longitudinal extension L of the ribs 17 against spring force and that interact with the mounting tabs 11 of the pressing jaws 7 and 8.

[0106] The pressing jaws 7 and 8 have correspondingly laterally aligned ribs 59 for guiding interaction with the previously described grooves in the mounting head 9. The ribs 59 can be formed by the edges of one or more ribs 17.

[0107] In addition to being held in the holder head 9, the pressing jaws 7 and 8 of this third embodiment are preferably also directly connected to one another, so that these pressing jaws are always present as a pair even outside the holder head 9. The direct connection between the pressing jaws 7 and 8 is preferably not removable without tools.

[0108] A design of a pair of pressing jaws with a direct connection, particularly as described in more detail above and below, is not tied to the mounting head described in this context. It is also relevant independently of this, with regard to a pair of pressing jaws designed accordingly.

[0109] Each pressing jaw 7 and 8 can have an elongated hole 60 which penetrates the pressing jaw 7 or 8 over the entire depth viewed perpendicular to the longitudinal extension L, which elongated hole 60 is furthermore aligned in the direction of the vertical extension H of the ribs 17.

[0110] In addition, each pressing jaw 7 and 8 carries a through-pin 61 aligned in the depth direction of the pressing jaw 7 and 8, respectively, which, like the previously described elongated hole 60, is arranged outside the pressing opening 24. The through-pin 61 of one pressing jaw is captured in the elongated hole 60 of the other pressing jaw. This results in a direct connection of the pressing jaws 7 and 8 to one another, further forming a linear guide in the vertical extension H or in the retraction direction r of the ribs 17.

[0111] According to one possible embodiment, the penetration pins 61 can be formed by screws which can be secured at the ends by securing means 62, for example in the form of screw nuts.

[0112] The elongated hole linear guide provides a stop at each end. These stops can define the maximum retracted position of the pressing jaws 7 and 8 and / or the maximum extended position of the pressing jaws 7 and 8. In particular, the maximum extended position (basic position) of the pressing jaws 7 and 8 is defined by the engaging pin 61 striking the relevant end of the elongated hole 60, so that the pressing jaws 7 and 8, starting from a maximum retracted position, possibly also defined by the elongated hole 60, cannot be moved relative to each other beyond a maximum travel distance s without first removing the connection between the pressing jaws 7 and 8. The maximum travel distance s can be defined accordingly by the maximum possible displacement path of the engaging pin 61 in the elongated hole 60 (cf. Figures 25 and 26 ).

[0113] The pressing jaws 7, 8 of this third embodiment can also be provided with supplementary pressing parts 29, as described above. In this context, supplementary pressing parts 29 are preferably shown, in which a structure 32 is provided on one or both of the surfaces 31 facing the pressing opening 24 and forming the opening contour K, for example for carrying out a symbol-like or character-like embossing on the pressed part 25 during the pressing process, such as a company name, a logo or information that allows conclusions to be drawn about the person carrying out the pressing and / or the date of the pressing (cf. Figure 30 ). The embossing by the structure 32 is part of the pressing contour P on the compact 25.

[0114] Furthermore, one or more of the features described above for such pressing jaws can also be implemented in detail in the pressing jaws described here.

[0115] In the case of a hydraulic pressing tool, as known, for example, from WO 99 / 19947 A1 or WO 2017 / 129385 A1, the pressing jaws are connected in such a way that an opening movement only results in one movement up to the end of a maximum travel distance s, at which end the connection between the pressing jaws is still maintained. This can have an advantageous effect in that automatic shutdown can be achieved even when the hydraulic piston retracts. When changing between different pressing jaw pairs, the shutdown point corresponds immediately to the end of this travel distance, even if the travel distances are different for the different pressing jaw pairs. As soon as the end of the maximum possible travel distance is reached, the hydraulic piston can no longer move back. Accordingly, the pressure in the hydraulic cylinder drops further.From this position, a shutdown can be triggered by a sensor, for example, via a pressure sensor, or a return valve can be provided that closes automatically when the pressure drops (see, for example, EP 944 937 B1 or US 6 276 186 B1). The next pressing operation can then be carried out immediately starting from this position.

[0116] In the case of devices operated by an electric motor, for example via the spindle drive described, a force sensor can be provided which also leads to a shutdown when a certain force is reached during retraction. List of reference symbols 1 Crimping pliers 29 Additional pressed part 2 Drive unit part 30 Area 3 Grip area 31 Area 4 Working head 32 structure 5 accumulator 33 Mounting arm 6 Actuation button 34 Bracket projection 7 Press jaw 35 Mounting surface 8 Press jaw 36 spring element 9 Mounting head 37 vein 10 screw 38 wall 11 Mounting bracket 39 Area 12 drilling 40 Area 13 clamping sleeve 41 notch 14 drilling 42 inclined surface 15 Recording 43 Angle part 16 element 44 Long side part 17 rib 45 narrow side part 18 edge 46 Long side section 19 base 47 Long side part 20 Entrance opening 48 narrow side part 21 Corner area 49 flange 22 frontal surface 50 Neck 23 Press mouth 51 bolt 24 Press opening 52 recess 25 Pressing 53 projection 26 wire end ferrule 54 forehead area 27 Cable 55 Longitudinal slot 28 Intersection 56 forehead zone 57 Sleds G Longitudinal direction 58 Fasteners H Height extension 59 ribs K Opening contour 60 slot L Longitudinal extension 61 Reach-through pin P Press contour 62 securing element 63 Nut 64 Point of contact 65 Folding a length a' length b length b' length c length d Height r Entry direction s Travel distance x Longitudinal axis α angle

Claims

1. Pressing pliers (1) comprising a first and second pressing jaws (7,8), wherein the pressing jaws (7, 8) being configured to move relative to each other in a traversing direction (r), each pressing jaw (7, 8) having ribs (17) thereon, each rib (17) being defined by a longitudinal extension transverse to the traversing direction (r), wherein entry openings (20) are formed between adjacent ribs (17), wherein the ribs (17) of the first pressing jaw (7) are configured to move into the entry openings (20) of the second pressing jaw (8) during a pressing operation, and the ribs (17) of the second pressing jaw (8) are configured to move into the entry openings (20) of the first pressing jaw (7) during the pressing operation, wherein the first and second pressing jaws (7, 8) form a pressing mouth (23) with an opening contour (K) formed by free marginal edges (18) of the ribs (17), and wherein the ribs form an intersection therebetween that moves in the direction of the longitudinal extension during the pressing operation, wherein a supplemental pressing part (29) is provided between the ribs (17) of the first pressing jaw (7) and the ribs (17) of the second pressing jaw (8), wherein the supplemental pressing part (29) forms a part of the opening contour (K), wherein the supplemental pressing part (29) has an extension transverse relative to the longitudinal extension of the ribs (17), and wherein the supplemental pressing part (29) is overlapping at least two of the rips (17) of the first pressing jaw (7) and the second pressing jaw (8), characterized in that the intersection (28) is outside of the opening contour (K).

2. The pressing pliers according to claim 1, characterized in that the supplemental pressing part (29) is movably arranged relative to the ribs (17).

3. The pressing pliers according to one of the preceding claims, characterized in that the supplemental pressing part (29) has two surfaces (30) which are angled relative to each other and engage with the ribs (17).

4. The pressing pliers according to claim 3, characterized in that the supplemental pressing part (29) extends in cross-section, at least in its regions (30) abutting the ribs (17), in relation to the surfaces (30) corresponding to the legs of a triangle.

5. The pressing pliers according to one of the preceding claims, characterized in that the supplemental pressing part (29) is positively held on one or both pressing jaws (7, 8).

6. The pressing pliers according to one of the preceding claims, characterized in that the supplemental pressing part (29) has at least one mounting arm (33), wherein, preferably, the mounting arm (33) extends from the supplemental pressing part (29) and / or the mounting arm (33) extends outside the opening contour (K) and / or the supplemental pressing part (29) has a plurality of mounting arms (33).

7. The pressing pliers according to claim 6, characterized in that one or both pressing jaws (7, 8) have at least one mounting surface (35) along which a mounting arm (33) can slide in the course of pressing.

8. The pressing pliers according to one of the claims 6 or 7, characterized in that the mounting arm (33) has a mounting projection (34) which preferably extends approximately at right angles to the mounting arm (33).

9. The pressing pliers according to claim 8, characterized in that the mounting projection (34) cooperates with the mounting surface (35).

10. The pressing pliers according to one of the preceding claims, characterized in that the supplemental pressing part (29) is provided on its edge forming part of the opening contour (K) with a structure (32) serving to convey information.

11. An arrangement comprising a first and a second pressing jaw (7, 8), the pressing jaws (7, 8) being configured to move relative to each other in a traversing direction (r), each pressing jaw (7, 8) having ribs (17) thereon, each rib (17) being defined by a longitudinal extension transverse to the traversing direction (r), wherein entry openings (20) are formed between adjacent ribs (17), wherein the ribs (17) of the first pressing jaw (7) are configured to move into the entry openings (20) of the second pressing jaw (8) during a pressing operation, and the ribs (17) of the second pressing jaw (8) are configured to move into the entry openings (20) of the first pressing jaw (7) during the pressing operation, wherein the first and second pressing jaws (7, 8) form a pressing mouth (23) with an opening contour (K) formed by free marginal edges (18) of the ribs (17), and wherein the ribs form an intersection therebetween that moves in the direction of the longitudinal extension during the pressing operation, wherein a supplemental pressing part (29) is provided, which forms a part of the opening contour (K) in addition to the ribs (17), and wherein the supplemental pressing part (29) is arranged to extend transversely to the marginal edges (18) in overlapping relationship with a plurality of ribs (17), characterized in that the intersection (28) is outside the opening contour (K).

12. The arrangement according to claim 11, characterized in that the pressing jaws (7, 8) are directly connected to one another, and in that, as a result of the connection, the pressing jaws (7, 8) can be moved relative to one another during an opening movement only up to an end of a largest traversing distance (s) at which the connection of the pressing jaws is still given.

13. The arrangement according to claim 12, characterized in that, for the direct connection, one of the pressing jaws (7, 8) has a penetration pin (61) outside the pressing opening (24) and the other pressing jaw (8, 7) has an oblong hole (60), and in that the penetration pin (61) is caught in the oblong hole (60).

14. A method of manufacturing a pressing pellet (25) comprising: providing a first and a second pressing jaw (7, 8), each pressing jaw (7, 8) having ribs (17), the ribs (17) being defined with a longitudinal extension transverse to a traversing direction (r) of the pressing jaws, and entry openings (20) being left between adjacent ribs (17), wherein, during a pressing operation, the ribs (17) of the first pressing jaw (7) are configured to move into the entry openings (20) of the second pressing jaw (8) and the ribs (17) of the second pressing jaw (8) are configured to move into the entry openings (20) of the first pressing jaw (7), the first and the second pressing jaws forming a pressing mouth (23) with an opening contour (K) which is formed by free marginal edges (18) of the ribs (17), wherein the ribs (17) form an intersection (28) therebetween that moves in the direction of the longitudinal extension during the pressing operation, and wherein a supplemental pressing part (29) is inserted into the pressing jaw (23), between the ribs (17) of the first pressing jaw (7) and the second pressing jaw (8), in order to form part of the opening contour (K) of the pressing opening (24) formed by the pressing jaws (7, 8), and wherein the first and second pressing jaws (7, 8) are moved relative to one another in order to carry out a pressing operation, characterized in that the supplemental pressing part (29) is inserted in overlapping relationship with the intersection (28) of the opening contour (K) formed by the retracting ribs (17).

15. The method according to claim 14, characterized in that the supplemental pressing part (29) is provided and inserted in such a way that it forms a part of the opening contour (K) over a depth of the pressing opening (24) while crossing at least two ribs (17) of the first and second pressing jaws (7, 8), respectively, while covering the intersection (28) and / or that the supplemental pressing part (29) is moved relative to the ribs (17) during pressing.