Pliers and method for pressing wire end sleeves

Abstract

The invention relates to pliers (1) comprising two pliers handles (2, 3) and two pliers jaws (4, 5), the pliers handles (2, 3) being connected to the pliers jaws for moving the pliers jaws (4, 5) between an open position and a closed position, the pliers jaws (4, 5) having handle side ends and opposite ends assigned to the respective pliers handles (2, 3), the pliers jaws (4, 5) also being connected to one another in an articulated manner between the ends in a first joint (10) and a second joint (11), the invention relates to a clamp (1) comprising a first clamp handle (2) and a second clamp handle (3), which are connected to the clamp handles (2, 3) in an articulated manner in a third and a fourth connection (14, 15) at the handle side end, the clamp handles (2, 3) being directly connected to each other in an articulated manner in a fifth connection (19) formed between the third and fourth connection (14, 15), an additional clamp handle (16) being provided, which extends between the clamp handles (2, 3) in the pivot direction (r) of the clamp handles (2, 3) in the open position. In order to design such pliers (1) in an advantageous manner with respect to the additional pliers handle (16), the additional pliers handle (16) extends from one of the pliers jaws (4, 5) and is rigidly connected to the pliers jaw (4, 5) for pivoting purposes.

Description

Technical Field

[0001] Described and explained is a pair of pliers comprising two handles and two jaws, wherein the handles are connected to the jaws for moving the jaws between an open position and a closed position, wherein one jaw has a handle side end and an opposite end assigned to the respective handle, wherein the jaws are also connected to each other in an articulated manner between the ends in a first joint and a second joint, and are connected to the handles in an articulated manner on the handle side ends in a third and a fourth joint, wherein the handles are also directly connected to each other in an articulated manner in a fifth joint constructed between the third joint and the fourth joint, wherein an additional handle is also provided, which extends between the handles in the open position along a pivoting direction of the handles.

[0002] Furthermore described and explained is a device with a first pressing jaw and a second pressing jaw, wherein the pressing jaws are configured to move relative to each other in a movement direction, wherein each pressing jaw has a rib, wherein the rib is formed with a longitudinal extension transverse to the movement direction of the pressing jaws, and wherein an entry opening remains between adjacent ribs, wherein during the pressing process, the rib of the first pressing jaw is formed as an entry opening into the second pressing jaw, and the rib of the second pressing jaw is formed as an entry opening into the first pressing jaw, wherein the first pressing jaw and the second pressing jaw are formed as a pressing mouth with a substantially rectangular opening contour, which is formed by the free outer edges of the ribs, wherein the ribs of the handle of the first pressing jaw forming the rectangular contour also form the corners of an intersection, the above-mentioned ribs forming the opening contour with the corresponding ribs of the second pressing jaw, and the intersection moves during the pressing.

[0003] Finally, described and explained is a method for squeezing a wire end sleeve onto a cable by using a pliers comprising two pliers handles as described above and below, for example also by using a device of squeezing jaws as described above and below. Background Art

[0004] A pair of pliers as described above, comprising two pliers handles, is known, for example, from document KR 10 2009 0 081 087A.

[0005] For further information on the prior art, reference is made, for example, to document US Pat. No. 109,192 A. The pliers known therefrom have only two joints. One pliers handle is formed in a shortened manner. To increase the leverage, a cam lever is provided, which acts together with a cam that slides along the short pliers handle during actuation. The cam lever is connected to the other pliers handle only via an angle piece, which protrudes at right angles on the other pliers handle and additionally has an obliquely oriented stabilizing portion.

[0006] Regarding the pliers, as mentioned above, more generally reference should also be made to, for example, document US 2018 / 0040998 A1.

[0007] Reference is first made to document WO 2022 / 029320 A2 for the arrangement of two extrusion jaws. It is known from this that additional extrusion parts covering the intersection of the ribs inwards are provided in the corner regions of the rectangular opening profile. Further reference is made to document US10 615558 B2, from which it is known that the hexagonal opening profile forms an elongated protruding profile which is integrally formed in the region of the ribs between the two corner regions in the direction in which the ribs are joined together. Summary of the invention

[0008] Based on the above-mentioned prior art, the technical problem to be solved with respect to pliers comprising two pliers handles is to provide pliers which can be operated in an advantageous manner with respect to the additional pliers handles.

[0009] The above technical problem is initially and essentially solved in that an additional grip extends from one of the jaws and is rigidly connected to the jaw for pivoting.

[0010] This makes it possible to achieve a favorable initial position relative to the pliers handle, with the aid of which at least squeezing can be started, for example by one-handed operation by gripping the pliers handle and the additional pliers handle. Since the additional pliers handle is directly connected to the pliers jaws, in the area of ​​the operating hand, an almost identical lever arm is produced on the pliers handle as on the additional pliers handle. However, in the closed state of the pliers, a relatively short overall length of the pliers measured from the free end of the pliers jaw to the free end of the pliers handle can be achieved in an advantageous manner. Even when the pliers are widened to the fully opened state, the additional pliers handle can be advantageously accessible.

[0011] With regard to the arrangement of the first and second pressing jaws, the technical problem to be solved is to be able to perform an advantageous pressing, in particular with regard to pressing the wire end sleeve onto the cable, based on the mentioned prior art.

[0012] The above technical problem is initially and basically solved by forming a tooth-like protrusion on the outer edge of the rib approximately in the center between the intersection point and the corner forming portion, which protrudes toward the center of the opening contour and its extension in the longitudinal direction of the rib and to the center of the opening contour corresponds to one third or less of the free length of the rib between multiple or one intersection points and the corner forming portion at the beginning of the extrusion process.

[0013] In the case of a protrusion formed in this way, it has been shown in an advantageous manner that, in particular during the extrusion of a sleeve, but also during the extrusion of any other object, an advantageous first action on the extruded part can be achieved, for example in the case of application of the sleeve to a further object such as a cable, when the jaws with the extrusion jaws are initially only slightly closed, which can already lead to a first connection between the objects.

[0014] With regard to the method, the above technical problem is initially and essentially solved by initially using an additional pliers handle to perform the squeezing of the wire end sleeve with one hand until the first folding and then completing the squeezing by using two pliers handles.

[0015] Squeezing until the first folding of the wire end sleeve results in an already secure hold of the cable in the wire end sleeve, so that the user of the pliers is initially freed from the need to hold the cable with his other hand (compared to with one hand, with the aid of which the pliers are initially actuated with the help of the additional pliers handle), so that the user can then act with both pliers handles simultaneously and can end the squeezing with greater force.

[0016] Further features are explained below and are generally explained in the description of the figures in terms of their preferred relevance to one or several of the overall described solutions or further features. However, they can also be related only to the individual features already described and / or to the corresponding further described features, or can be independent of each other. The described features and one or more features to be explained further below can also be realized individually or repeatedly or in combination on one object, for example, in particular pliers.

[0017] With regard to the additional pliers handle, it can be provided that it corresponds to at least the width of a hand, thus for example has a length of 8 to 15 cm, or has approximately half the free length of one or both of the pliers handles.

[0018] Furthermore, the additional tongs handle can also be articulated at least on the third joint. It can thus be pivoted together with the jaws about this joint. Furthermore, the additional tongs handle can be connected to the jaws, for example to at least one further fixing point outside the joint.

[0019] The additional tongs handle can be arranged and formed relative to the tongs handle that directly corresponds to it due to the tongs jaw to which it is connected, so that the additional tongs handle can pass through the tongs handle in the closed position of the tongs or in the position of the top of the tongs handle accordingly. The pliers and the additional tongs handle can also be formed and arranged, for example, so that the fifth joint can be passed through, optionally in the area of ​​the protruding area of ​​the additional tongs handle. For this reason, the additional tongs handle can further preferably be formed in a substantially plate-like manner in the cross section. Therefore, it is a flat component. Based on the external cross-section, that is, based on the extension toward the free end on the other side of the protruding area that is optionally provided, the size of the additional tongs handle is, for example, substantially 1.2 times or more larger than the size perpendicular to it. It can further correspond to about 1.8-2.2 times, and in addition, for example, about 2 times. In order to achieve the passable characteristics and the choice of positioning on the other top, the arrangement on the tongs jaw is also optionally realized by a spacer, which is then arranged between the additional tongs handle and the fixed tongs jaw in the direction of the joint axis.

[0020] The additional handle may also be connected to the handle only via the jaws and thus to the handle via a swivel joint. In more detail, the additional handle may be connected to one handle via a joint that connects the jaws fixed relative thereto to the handle, but additionally to the other handle via another fifth joint that directly connects the handles.

[0021] The pliers are designed, for example, as crimping pliers and are further used, for example, to crimp wire end sleeves onto cables, which are then stripped in this respect, for example, in the area of ​​the wire end sleeve application.

[0022] The jaws of these pliers can be formed by squeeze jaws, which are in each case accommodated in the pliers jaws, in particular squeeze jaws as described in more detail below. However, the squeeze jaws can also be part of the pliers jaws, rather than being replaceable.

[0023] These extrusion jaws can form a plurality of individual extrusion openings. This makes it possible to extrude wire end sleeves of different sizes or other components of different sizes, for example in the sense of producing different sizes.

[0024] With regard to the arrangement of the first pressing jaw and the second pressing jaw, provision can be made for the projection to have two side surfaces which extend in a straight line and converge towards the centre of the opening contour, thereby producing a tip which projects into the interior of the opening contour.

[0025] The side surfaces may form an acute angle between 60 degrees and 30 degrees, wherein a portion of the profile is perpendicular to a rectilinear portion of the rectangular profile of the rib.

[0026] With respect to their free ends which protrude into the centre of the opening contour, the side faces can merge into one another, for example in the manner of a circular arc. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The described solution is further explained below based on the drawings, which however only represent exemplary embodiments, wherein:

[0028] Figure 1 The pliers are shown in a closed position with the pliers handles attached;

[0029] Figure 1a Show according to Figure 1 A cross section of the additional clamp handle along line Ia-Ia in FIG.

[0030] Figure 2 Shown along Figure 1 The line XII-XII in the section passes through Figure 1 The cross section of the object;

[0031] Figure 3 Shown in open position Figure 1 A pliers into which the cable and the wire end sleeve are inserted;

[0032] Figure 4 It is shown that at the beginning of extrusion, according to Figure 3 pliers;

[0033] Figure 5 Shown after continued extrusion according to Figure 4 pliers;

[0034] Figure 6 After continued squeezing using two pliers, Figure 5 pliers;

[0035] Figure 7 Shown in closed position after extrusion is completed Figure 6 pliers;

[0036] Figure 8 The device shows two squeeze jaws in a closed position;

[0037] Fig. 9 The base is shown in a perspective view in the open position Figure 8 Devices;

[0038] Fig.10 It is shown that at the beginning of extrusion, Figure 8 or Fig. 9 The jaws of the clamp squeeze the wire end sleeve on the cable;

[0039] Fig.11 Shown after continued extrusion according to Fig.10 's picture;

[0040] Fig.12 After the pressing is completed, the Fig.10 or Fig.11 ; and

[0041] Fig.13 The wire end sleeve is shown pressed onto the cable when the extrusion has been completed. DETAILED DESCRIPTION

[0042] First reference Figure 1 Shown and described is a pair of pliers 1 comprising two handles 2 , 3 and two jaws 4 , 5 .

[0043] The jaws 4 , 5 have handle-side ends 6 , 7 and opposite free ends 8 , 9 .

[0044] The jaws 4, 5 are pivotably connected to each other in an articulated manner between the respective ends 7 and 8 or 6 and 9 by means of a first joint 10 and a second joint 11, respectively, which can be provided by respective pivots extending through them. The first joint 10 and the second joint 11 can also be replaced by a single joint. For example, a single joint can then be provided in this region instead of the roller region 12, as will be explained below.

[0045] As provided in the case of the exemplary embodiment, the jaws 4 , 5 can even further support each other in the roller region 12 , such as Figure 1 In addition, the jaws 4 and 5 can be connected to each other by one or two connecting pieces 13. The connecting pieces 13 can be arranged on both sides relative to the flat sides of the jaws 4 and 5 facing each other. The roller area 12 can be realized by corresponding curved surfaces of the jaws 4 and 5 that are adjacent to each other. As in the embodiment shown, the roller area 12 can also be realized by two mutually meshing gear parts.

[0046] The jaws 4, 5 can be (and in the embodiment shown are) connected to the handles 2, 3 in an articulated connection via a third joint 14 and a fourth joint 15, which can be provided by respective pivots extending therethrough. The handles 2, 3 can be directly connected to each other in a fifth joint 19, which can be a pivot extending therethrough and providing an articulated connection. The fifth joint 19 is arranged between the third joint 14 and the fourth joint 15.

[0047] An additional pliers handle 16 may also be provided, which in the open position of the pliers 1 (see for example Figure 3 ) extends between the pliers handles 2 and 3 along the pivot direction r.

[0048] In the initial state (see Figure 1 ), or in the end state (see Figure 7 ), when the pliers 1 are closed, the additional pliers handle 16 may also completely or partially extend overlapping with one of the pliers handles 2, 3 as shown.

[0049] In the initial state (see Figure 1 ), or in the end state (see Figure 7 ), when the pliers 1 are closed, the additional pliers handle 16 may also completely or partially extend overlapping with one of the pliers handles 2, 3 as shown.

[0050] The additional pliers handle 16 can be fixedly arranged on the pliers jaw 4, and the pliers handles 3, 4 can pivot relative to the additional pliers handle 16. Figure 2 As shown, the additional tongs handle 16 extends and is therefore also pivoted in the region which is present above the tongs handles 3, 4, in particular above the gripping part of the tongs handle 3. Figure 5 In the not yet completely closed state of the pliers, the additional pliers handle can partially extend over the pliers handle 3, but at least according to Figure 1In the closed position of the pliers, the additional pliers handle 16 extends on the pliers handle 3. In this regard, the additional pliers handle 16 is also formed, for example, in a substantially plate-like manner. For this pliers handle 16, a main area 18a and a protrusion 18b can be distinguished. The protrusion 18b is closer to the jaws than the main body 18a. The main body 18a serves as a handle portion of the pliers handle 16. The additional pliers handle 16 has a main body 18a, which has a generally rectangular cross-section, and the additional pliers handle 16 also has, for example, a protrusion 18b extending between its ends in the pivot direction r from one side of the main body 18a, as described in detail below. The main body 18a and the protrusion 18b can be parts of the same plate-like component. The same applies to the section 18c. The length l1 of the cross section of the main body 18a in the pivot direction r can be about 1.5 times or more to about 3 times or 10 times the dimension of the additional pliers handle 16 transverse to the pivot direction r. The extension in the displacement direction r can again be significantly greater for the dimension transversely to the pivoting direction r in the projection 18 b which can generally have the same rectangular profile which also transitions in a coplanar manner into the projection 18 b.

[0051] The substantially plate-like shape of the additional pliers handle 16 means that Figure 1a The substantially rectangular cross section shown has a length l1 extending substantially along the pivot direction r and a length l2 extending at right angles to the pivot direction r.

[0052] The rectangular profile of the additional clamp handle 16 can be the same over the length 1. The length 1 can be 8 to 15 cm.

[0053] However, in order to have two different sections, namely the main portion 18 a and the protruding portion 18 b , the length l1 may be different in the length 1 of the additional pliers handle 16 .

[0054] Although the length of the cross section in the pivot direction r can generally be 1.5 times or more to about 3 times or 10 times the length l2, in the protrusion 18b, this ratio is higher than in the main body 18a. In the main body 18a, it can be, for example, between 1.5 and 3 times, while in the protrusion 18b, it can be up to 10 times.

[0055] The additional handle 16 can be rigidly connected to one of the jaws, in the case of the exemplary embodiment to the jaw 4. This connection allows the additional handle 16 to be moved or pivoted together with the jaw, in a given case together with the jaw 4.

[0056] In the case of an exemplary embodiment and preferably, the additional pliers handle 16 can be connected to the third joint 14, as shown. The joint 14 is constituted by a joint axis, which can extend through a section 18c of the additional pliers handle 16. The section 18c can generally have a cross-section as described with respect to the section 18a. The section 18c is preferably closer to the pliers mouth than the protrusion 18b. The joint 14 and / or the joint axis can respectively extend through the main body 18a or, in a given case, specifically through a section 18c of the additional pliers handle 16. In order to allow the jaw 4 to pivot relative to the additional pliers handle 16, the additional pliers handle 16 is fixedly coupled to the jaw 4 at the connection area 17.

[0057] Whether by means of one of the sections 18a, 18b and 18c, the additional tongs handle 16 is preferably fixedly coupled to the jaw 4 at the connection area 17. The connection via the third joint 14 and the connection in the area 17 together realize a fixed connection of the additional tongs handle 16 at the jaw 4.

[0058] The connection region 17 can be formed outside one of the joints 10, 14, for example between the two joints 10, 14. The connection region 17 can also be provided by a shaft passing through the additional tongs handle 16 and the tongs jaw 4; for example there can also be riveting or welding.

[0059] Alternatively to this, the additional tongs handle 16 can be formed integrally with the jaw 4 or even with the jaw 5. The jaw 4 or 5 can also consist of a plurality of plates arranged one above the other. Thus, the additional tongs handle 16 can be formed, for example, on (only) one of the plurality of plates, in the extension of this plate, alternatively also as a further plate. The optional further plate can also be attached via one or more spacers at a distance from the jaw part (optional jaw plate) in order to provide a traverse on the tongs handle in the manner described.

[0060] The additional tongs handle 16 has the already mentioned free length l, which is defined from the third joint 14 (e.g. the geometrical joint axis of the joint) to the free end of the additional tongs handle 16, and which can be one-third to two-thirds, preferably half, of the free length L of the tongs handle 3 or, in a given case, the tongs handle 2. The free length 1 can be, for example, one-third of the free length L or, in the case of a long tongs handle 3, one-quarter of the free length L. The free length 1 can also be corresponding intermediate values.

[0061] The additional gripper 16 can also be formed without joints and / or connections over the entire free length 1 except for the area at the joint 14. The additional gripper 16 preferably has no functional parts or functional areas that would cooperate with one of the other grippers 3, 4 over the free length 1.

[0062] The additional tongs handle 16 can also have a projection 18b, which extends in the pivot direction r from the connection area 17 and the straight continuation on the third joint 14 to the other tongs handle 2. Viewed in the direction of the free end of the additional tongs handle 16, the projection 18b starts below the third joint 14 and has a dimension x, which starts from the outer edge of the section 18a or 18c facing the other tongs handle. The dimension x corresponds approximately to or exceeds the distance between the third joint 14 and the fifth joint 19. In the case of the exemplary embodiment, the extension of the projection 18b also exceeds about a quarter of the distance to the fifth joint 19 or more.

[0063] When the jaws 4 and 5 are opened, Figure 3 The protrusion 18b can cover the fifth joint 19, which also contributes to safety.

[0064] In the case of the exemplary embodiment, Figure 8 and Fig. 9 As shown in further detail in FIG. 1 , the pressing jaw 20 or 21 is respectively accommodated in the clamp jaws 4 , 5 .

[0065] These extrusion jaws 20, 21 can form a plurality of individual extrusion openings 22, 23, 24. The largest individual extrusion opening 22 of each extrusion jaw 20, 21 can be close to the first joint 10 or close to the second joint 11, and one or two further individual extrusion openings 23, 24 can be formed towards the free end of the jaws 4, 5, each providing a smaller opening cross section. Two corresponding extrusion openings of the jaws form an extrusion mouth. The extrusion jaws thus form a jaw between them.

[0066] Reference Figure 3 The squeezing of the free stripped end 26 of the cable 27, for example, by means of a wire end sleeve 25, can be carried out by inserting the stripped end 26 together with the attached wire end sleeve 25 into a separate group of squeezing openings, here for example a separate group of squeezing openings 22, with the jaws 4, 5 being in the open position. The cable 27 is initially held there by the user with one hand, see Figure 3 With his other hand, the user can grasp the corresponding pliers handle, here the pliers handle 3, and at the same time reach the additional pliers handle 16 with the fingers of the same hand, see Figure 3 By pulling the additional pliers handle 16 , the user can achieve an initial squeezing of the wire and the sleeve 25 at the end 26 of the cable 27 .

[0067] Thereafter, with the initial squeezing of the wire end sleeve 25 onto the stripped end 26 of the cable 27, the handle-side end 7 of the jaw 4 moves outwardly away from the jaw 5, which simultaneously moves along due to the articulated connection provided by the joints 14 and 15. This is achieved by pulling the additional gripper handle 16 further towards the gripper handle 3, see Figure 4The tongs handle 3 is thereby pivoted toward the other tongs handle 2. The angular orientation between the additional tongs handle 16 and the tongs handle 3 is simultaneously changed and reduced.

[0068] Figure 4 The following steps are shown for the initial one-hand squeeze. Perform until approximately Figure 5 Afterwards, Figure 6 As shown, the user then grasps the gripping areas 28, 29 of the pliers handles 2, 3 with both hands and completes the squeezing by applying even higher force until the closed position of the pliers jaws 4, 5 is reached, as shown in FIG. Figure 7 shown.

[0069] refer to Figure 8 and 9 The first and second pressing jaws 20 and 21 are explained in more detail.

[0070] The pressing jaws 20 , 21 are designed to be moved relative to each other in a movement or pivoting direction r.

[0071] Each pressing jaw 20, 21 has a plurality of ribs 30 which are formed with a longitudinal extension 13 transverse to the displacement direction r. During pressing, the ribs form a substantially rectangular contour with four legs extending substantially at right angles to one another.

[0072] The inlet opening 31 is arranged between adjacent ribs 30. During the squeezing process, the ribs 30 of the first squeezing jaw 20 can enter the inlet opening 31 of the second squeezing jaw 21 and vice versa. Figure 7 or Figure 8 As shown in FIG, the first and second pressing jaws 20, 21 form a substantially rectangular opening contour K, which is formed by the free outer edges of the ribs 30. Figure 7 or Figure 8 In the closed position of the opening contour K, the ribs 30 are moved successively up and down at the intersection S in the viewing direction in the depth direction of the opening contour K. During the extrusion process, the intersection S moves inwards until it reaches, for example, Figure 7 and 8 final outline.

[0073] The tooth-like protrusion 33 protruding toward the center M of the opening profile K can be formed on the outer edge 32 of the rib 30, based on a plurality of said intersections S or based on a certain intersection and the corresponding corner-shaped portion E of the opening profile K approximately at its center. The extension x of the tooth-like protrusion 33 in the longitudinal direction of the rib 30 and in the direction toward the center M of the opening profile K can correspond to one third or less of the free length y of the rib 30, respectively. The free length is the length of the profile straight without taking into account the protrusion 33, see e.g. Fig. 9For example, the extension x may be the same in the direction towards the center M and in the longitudinal direction of the rib. The extension x of the protrusion of the rib 30 may correspond to approximately one tenth to three tenths of this free length, for example approximately 1.5 tenths.

[0074] The sections 34 or 35 of the rib 30 which form the straight section of the rectangular opening contour K can adjoin the toothing 33 on both sides, respectively.

[0075] The tooth-like projection 33 can have, for example, two side faces 36 , 37 which extend in a straight line and converge towards the center M of the opening contour K. They form a tip.

[0076] The side faces 36, 37 may further form, for example, an acute angle α between 30 and 60 degrees, for example an angle α of about 45 degrees, through a vertical line Z extending perpendicularly to the straight portion of the rectangular opening profile K of the rib 30. That is, the side faces 36, 37 may define, for example, an angle between 60 and 120 degrees.

[0077] The side surfaces 36 and 37 can merge into one another in an arc-shaped manner at their end faces on the free ends corresponding to the center M, ie, at the tips.

[0078] In this respect, it has been found that, in the case of a (only) small extension x of the tooth-like projections 33 in the direction of the center M of the corresponding extrusion opening 22, due to the effect of one or more tooth-like projections 33, shortly after the start of extrusion, a Fig.10 and 11 In the order of, the wire end sleeve 25 has a folded portion 38, see Fig.12 The folded portion 38 can further develop to the joint portion A, see Fig.12 As mentioned above, the tooth-like projections 33 can also have the same relative dimensions with respect to the straight free outer edges of the corresponding ribs 30 .

[0079] As in Figures 10 to 12 In the case of the exemplary embodiment of the present invention, if a further tooth-like projection 33 is also formed on the outer edge of the further rib 30, which, in the case of the observed opening profile, for example extends approximately at a right angle to the initially observed outer edge of the first rib 30, a corresponding projection 38 can also be produced there, see Fig.11 and 12 .

[0080] In individual cases it has been found empirically that, by means of an extension x of the toothed projection 33 relative to its protrusion towards the center M of the opening contour K, it can also be achieved in an unexpected manner that, even if a fold 39 is present on the finished extruded part, practically no impression of a toothed projection 33 or of multiple projections 33 is produced on the extruded part, since a corresponding separation from the toothed projection 33 already occurs rapidly during the extrusion process.

[0081] Reference numerals list

[0082] 1 Pliers

[0083] 2 Clamp handles

[0084] 3 Clamp handle

[0085] 4 Jaws

[0086] 5 Jaws

[0087] 6 Handle side

[0088] 7 Handle side

[0089] 8 Free end

[0090] 9 Free end

[0091] 10 First joint

[0092] 11 Second connector

[0093] 12 Roller Area

[0094] 13 contiguous

[0095] 14 Third connector

[0096] 15 Fourth joint

[0097] 16 Additional clamp handle

[0098] 17 Connection Area

[0099] 18a Main body

[0100] 18b Protrusion

[0101] Section 18c

[0102] 19 Fifth joint

[0103] 20 Squeeze Jaw

[0104] 21 Squeeze Jaw

[0105] 22 Individual extrusion openings

[0106] 23 Individual extrusion openings

[0107] 24 Individual extrusion openings

[0108] 25 Wire end sleeve

[0109] 26 Stripping end

[0110] 27 Cable

[0111] 28 Grip Area

[0112] 29 Grip Area

[0113] 30 ribs

[0114] 31 Entrance opening

[0115] 32 Outer edge

[0116] 33 tooth-like protrusion

[0117] 34 Sections

[0118] 35 sections

[0119] 36 Converging profiles

[0120] 37 Converging profiles

[0121] 38 bulge

[0122] 39 Folding

[0123] 1 16 free length

[0124] r Moving direction

[0125] x extension

[0126] y Free length of rib

[0127] A Joint

[0128] E corner forming part

[0129] K Opening profile

[0130] L Free length of clamp handle 2 or 3

[0131] M Center

[0132] S intersection

[0133] Z Vertical Line

[0134] α Angle

Claims

1. A pair of pliers (1), comprising two pliers handles (2, 3) and two pliers jaws (4, 5), wherein: The pliers handle (2, 3) is connected to the pliers jaw (4, 5) and is configured to move the pliers jaw (4, 5) between an open position and a closed position, wherein the pliers jaw (4, 5) has a handle-side end and an opposite end assigned to the respective pliers handle (2, 3), wherein the pliers jaw (4, 5) is also connected to each other in an articulated manner between the ends in a first joint (10) and a second joint (11), and is connected to the pliers handle (4, 5) in an articulated manner on the handle-side end in a third joint and a fourth joint (14, 15). 2, 3), wherein the pliers handles (2, 3) are also directly connected to each other in an articulated manner in a fifth joint (19) constructed between the third joint and the fourth joint (14, 15), wherein an additional pliers handle (16) is also provided, which in the open position extends between the pliers handles (2, 3) along the pivot direction (r) of the pliers handles (2, 3), characterized in that the additional pliers handle (16) extends from one of the pliers jaws (4, 5) and is rigidly connected to the pliers jaw (4, 5).

2. The pliers according to claim 1, characterized in that The additional pliers handle (16) has a free length (l) which is approximately half the free length of the pliers handles (2, 3).

3. Pliers according to any one of the preceding claims, characterized in that The additional clamp handle (16) is hinged on the third joint (14).

4. Pliers according to any one of the preceding claims, characterized in that The additional clamp handle (16) can be moved all the way to an overlapping position with a clamp handle (2, 3).

5. Pliers according to any one of the preceding claims, characterized in that The pliers (1) are designed as crimping pliers.

6. Pliers according to any one of the preceding claims, characterized in that The pliers mouth is formed by squeezing jaws (20, 21) respectively received in the pliers jaws (4, 5).

7. Pliers according to claim 6, characterized in that The extrusion jaws (20, 21) form a plurality of individual extrusion openings (22, 23, 24).

8. A device having a first extrusion jaw (20) and a second extrusion jaw (21), wherein: The extrusion jaws (20, 21) are configured to be movable relative to each other in a displacement direction (r), wherein each extrusion jaw (20, 21) has a rib (30), wherein the rib (30) is formed with a longitudinal extension transverse to the displacement direction (r) of the extrusion jaws (20, 21), and wherein an inlet opening (31) is provided between adjacent ribs (30), wherein during the extrusion process, the rib (30) of the first extrusion jaw (20) is formed into the inlet opening (31) of the second extrusion jaw (21) and a crossing point is provided thereat, and the rib (30) of the second extrusion jaw (21) is formed into the inlet opening (31) of the first extrusion jaw (20), wherein the first extrusion jaw (20) and the second extrusion jaw (21) form a substantially An extrusion opening with a rectangular opening profile (K), the opening profile (K) being formed by the free outer edges of the ribs (30), wherein the ribs (30) of the first extrusion jaw (4) forming the legs of the rectangular profile (K) also form a corner with the corresponding ribs (30) of the second extrusion jaw (21) given by an intersection (S), wherein the intersection (20) moves during extrusion, characterized in that a tooth-like protrusion (33) is formed on the outer edge of the rib (30) approximately in the center between the two intersections (S) formed by the rib (30), the tooth-like protrusion protruding toward the center (M) of the opening profile, and the extension of the tooth-like protrusion in the longitudinal direction of the rib (30) and up to the center of the opening profile corresponds to one third or less of the free length (y) of the rib (30) at the beginning of the extrusion process.

9. The device according to claim 8, characterized in that The sections (34, 35) of the rib (30) which form the straight section of the rectangular contour adjoin the tooth-like projection (33) on both sides.

10. The device according to claim 8 or 9, characterized in that The tooth-like projection (33) has two side surfaces (36, 37) which extend in a straight line and converge toward the center (M) of the opening contour (K).

11. The device according to claim 10, characterized in that The side surfaces (36, 37) form an acute angle (α) between 90 and 30 degrees with a vertical line (Z) relative to the straight-line extending portion of the rectangular opening contour (K).

12. The device according to claim 10 or 11, characterized in that The side surfaces (36, 37) transition into each other in an arc-shaped manner.

13. A method for squeezing a wire end sleeve (25) onto a cable (27) by using a pliers (1) according to one of claims 1 and 7, for example also by using a device according to one of claims 8 to 12, the pliers comprising two pliers handles (2, 3), the device comprising squeezing jaws (20, 21), characterized in that The squeezing is first performed with one hand using the additional pliers handle (16) until the initial folding of the wire end sleeve (25) and then completed using the two pliers handles (2, 3).

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