Stripping tool, pair of tool parts for stripping tool, and cable stripping method

Abstract

The present disclosure relates to a stripping tool (1) comprising a pair of tool jaws (2, 3) displaceable toward each other to strip a cable (8), and a pair of tool parts (4, 5) having a first tool part (4) and a second tool part (4, 5). Each tool part (4, 5) has a cutting body (9) for receiving a partial region of the cable (8), the cutting body (9) having a cutting portion (16, 17) with a cutting tip (11), and the cutting body (9) is displaceable relative to the tool part base (12) in an axial direction (a) perpendicular to the engagement direction (r). To obtain an advantageous cutting effect, it is proposed that the cutting body (9) and the tool part base (12) have guide surfaces (21, 44) operatively connected to each other and move after overcoming a holding force. The guide surfaces (21, 44) extend at the same obtuse angle relative to the engagement direction (r). The application of force on the cutting body (9) can only be achieved by displacement of the tool jaws (2, 3) in the engagement direction (r), which application of force results in a displacement of the guide surface (44) of the cutting body (9) relative to the guide surface (21) of the tool part base (12) with an axial movement component (a) corresponding to the obtuse angle, and thus a displacement of the cutting body (9).

Description

[Technical Field]

[0001] The present disclosure relates to a stripping tool having a pair of tool jaws, comprising a first tool jaw and a second tool jaw, displaceable towards each other for a stripping process, for stripping a cable having a cable core and an insulating sheath, further provided with cutting parts for acting on the cable during the stripping process, each tool part having a cutting body for receiving a partial region of the cable, the cutting body having a cutting part with a cutting tip, the cutting tip defining a free space of the cutting body provided for receiving the cable core therein, the tool part having a tool part base received on the tool jaw, the cutting body of the tool part being displaceable relative to the tool part base in an axial direction perpendicular to the engagement direction.

[0002] The present disclosure further relates to a pair of tool parts for a stripping tool of the type described above.

[0003] A method for stripping a cable having a cable core and an insulating sheath is further described, the method comprising: - placing a cable between two opposing cutting bodies of the first tool part and the second tool part, each having at least one cutting portion; - displacing the first tool part towards the second tool part in an engagement direction; - cutting an axial piece of the insulating sheath of the cable by using a cutting portion of the first tool part and a cutting portion of the second tool part; [Background technology]

[0004] A stripping tool of this type, a pair of tool parts therefor, and a method for stripping a cable are known. Using a stripping tool of this type, the cable can be prepared for stripping by cutting at least an axial section of the insulating sheath of the cable along the cable's length with a cutting part. This is followed by the removal of the separated insulating section from the insulating sheath remaining on the cable, usually by hand. Stripping tools of this type are known, for example, from US Pat. No. 5,699,291, ... The stripping tool for cutting the insulating sheath can preferably be a hydraulic and / or electric drive with tool jaws that are movable towards one another. The tool part with the cutting portion can be formed integrally with the tool jaws, but can also be interchangeably received on the tool jaws, as is usual and generally preferred. Furthermore, stripping tools are known in which both tool jaws are formed so as to be actively displaceable on their opposite jaws, or in which at least one of the tool jaws is displaceable while the opposite jaw is formed stationary on the stripping tool. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] U.S. Patent No. 10,554,006 [Patent Document 2] European Patent Application Publication No. 0 780 943 [Patent Document 3] European Patent Application Publication No. 3 718 185 [Patent Document 4] U.S. Patent Application Publication No. 2021 / 0006049 [Patent Document 5] International Publication No. 2008 / 138987 [Patent Document 6] U.S. Patent No. 8,056,473 [Patent Document 7] International Publication No. 2003 / 084719 [Patent Document 8] U.S. Patent No. 7,254,982 [Patent Document 9] International Publication No. 2014 / 009363 [Patent Document 10] U.S. Patent No. 10,468,847 Summary of the Invention [Problem to be solved by the invention]

[0006] Based on the above-mentioned prior art, the object is to achieve advantageous cutting results and advantageous stripping of cable sections by realizing a stripping tool of this type, a pair of tool parts for the stripping tool, and a method for stripping cables. [Means for solving the problem]

[0007] A possible solution to this object, in the case of a stripping tool, focuses on the tool part base and the cutting body having guide surfaces that are operatively connected to one another and allow displacement after overcoming the holding force, the guide surfaces extending at the same obtuse angle relative to the engagement direction, such that application of a force on the cutting body can only be achieved by displacement of the tool jaws in the engagement direction, which application of force results in a displacement of the guide surface of the cutting body relative to the guide surface of the tool part base, and thus of the cutting body, with an axial movement component corresponding to the angle.

[0008] Retention can be achieved in a variety of ways, as will be discussed below: Retention can be achieved by properly setting the frictional force, but also by a secure connection.

[0009] The proposed configuration of the stripping tool provides advantageous cutting and stripping results for cables. The stripping tool not only cuts into the insulating sheath of the cable, which is easy to handle, but also actually displaces and removes insulation pieces from the cable core. For this purpose, the tool parts have a tool part base that is particularly fixedly attached to the tool jaws or is formed integrally with the tool jaws, and a cutting body that is movable relative to the tool part base. The cutting body can be moved in the axial direction of the tool parts along an inclined guide surface in the longitudinal direction of the cable arranged between the opposing tool parts.

[0010] In addition to the axial displacement of the cutting body, it is preferred that the tool part itself and / or the cutting body be pivotable about a longitudinal axis corresponding to the axial direction relative to the tool jaw or the tool part base, respectively. The pivotability can be provided by a relatively small pivot angle, preferably in the range of 1° to 5°. Independently or additionally, the tool part base can have play relative to the tool jaw, in particular, so that the forces introduced into the cable to be cut via the tool jaw during the cutting process can be distributed, i.e., so that the cutting parts of opposing tool parts do not tilt or block each other.

[0011] The stripping tool, with its tool parts thus formed, is able to cut the insulating sheath and move it relative to the cable core in two consecutive steps. The movement of the insulating sheath preferably occurs only after overcoming the holding force, which does not allow movement between the operatively connected guide surfaces. The holding force is achieved by establishing a friction force between the cutting body and the insulating sheath. As will be explained in more detail below, this holding force can also be achieved by a secure connection. As long as the cutting part is in contact only with the insulating sheath of the cable, but not yet with the cutting part of the opposite tool part, only the friction force between the cutting part and the insulating sheath acts on the cutting part. This advantageously results in a self-locking coupling of the cutting parts, in which no axial displacement of the cutting body relative to the tool part base occurs yet. An axially acting force, which displaces the cutting body along the guide surface relative to the tool part base, is only generated when the opposing cutting parts of the stripping tool come into contact or substantially into contact with each other in the second step.

[0012] This causes the cut end piece of the insulating sheath to move relative to the cable core, allowing the end piece to be removed from the cable core for handling. When the tool jaws are brought together, the insulating sheath is cut and also moves relative to the cable core.

[0013] When corresponding cuts touch each other or touch each other except for a distance of 1 to several mm (or anywhere in between), i.e. when the insulating sheath is completely or nearly cut, the system of opposing cuts is considered to be a single object on which two opposing forces act: the axial force essentially results from a force acting transverse to the longitudinal direction of the cable.

[0014] The previously stabilized cutting body is released and the cutting body is moved relative to the tool part base of the tool part. The resulting axial force is, for example, in the range of 10% to 20% of the force applied to the stripping tool. This is sufficient to move the insulating sheath relative to the cable core, even in the case of relatively large cable cross-sections and, optionally, in the case of relatively hard insulating sheath materials.

[0015] The axial displacement can separate the cut end piece at the end of the insulating sheath from the rest of the insulating sheath, even if the end piece is not yet completely cut. The axial forces can cause tearing if necessary.

[0016] Since it is not necessary to completely cut through the insulating sheath before the cutting body is displaced relative to the tool part base, a constant distance can be maintained between the cutting part and the cable core, avoiding cutting into the strands of the cable core.

[0017] The principle of the stripping tool described above can be applied to cables with different outer diameters. Furthermore, the stripping tool is also suitable for cables with multiple insulating sheaths. The insulating material itself can be soft or hard, such as rubber, PVC, or PE. The cable core can be thick or consist of multiple strands. Furthermore, the cutting edge shape can be adjusted to suit various cable cross-sections, such as flat cables, section cables, or cables consisting of multiple individually insulated wires.

[0018] The tool parts are preferably, in particular, 25 mm 2 ~300mm 2 In practice, the proposed stripping tool has proven effective for cables with a core diameter of approximately 9 mm to 11 mm and an insulating sheath outer diameter of approximately 13 mm to 19 mm. The cutting tip of the cutting part, which is preferably formed in a semicircular shape, can define a free space with a diameter of, for example, 12 mm. In particular, it has been found that a cutting angle of about 5° to 20° of the cutting part is preferable.

[0019] However, the above information should be understood as illustrative only to illustrate the general dimensions of the stripping tool or its components, and should not be understood as limiting in any way.

[0020] The tool part base advantageously has a wedge structure including at least one guide surface or at least two guide surfaces tapering in opposite axial directions to a common wedge apex, whereby a wedge angle of the wedge structure defines the angle of the guide surfaces relative to the axial direction of the tool part. The wedge angle, i.e., the inclination of the guide surfaces, is preferably between 5° and 15°, and preferably about 9°. With respect to the axial direction of the tool part base, the wedge apex of the wedge structure is located at an axial position assigned to the axial position of the cutting tip in the initial position, preferably substantially corresponding to the axial position of the cutting tip of the cutting part, which preferably is simultaneously the axial position at which cutting of the insulating sheath of the cable is performed in the initial position of the stripping tool. As soon as the insulating sheath is completely or almost completely cut and the cutting tips of the opposing tool parts come into contact with each other or at least approach each other further, the two opposing cutting mechanisms are seen as bodies on which radially opposing forces act, resulting in a summation of axial forces and an axial displacement of the cutting body including the cutting parts. The cutting body then moves over the guide surface of the wedge structure assigned to it, and finally the cable is stripped. In one embodiment, the entire surface of the wedge structure can serve as the guide surface. However, it is preferred that the guide surface is formed only by individual, in particular strip-shaped, partial regions.

[0021] The cutting body is preferably formed in two parts and has two partial cutting bodies which can be displaced in opposite axial directions when the opposing cutting portions of the sheathing stripping tool come into contact with each other as described above or when opposing forces acting on the inclined surfaces of the cutting portions result in respective axial forces. One of the partial cuts can be formed solely for holding or clamping the cable. Due to the shape of the cut, an axial force acting on one partial cut acts in the opposite axial direction to the other partial cut.

[0022] A first partial cutting body of a cutting body of a tool part can have, for example, a retaining element for fixing the cable to be stripped. In contrast, a second partial cutting body of the same cutting body or tool part, respectively, has a cutting portion that is spaced from the retaining element by opposite axial displacement of the two partial cutting bodies, thereby allowing displacement of the insulating sheath over part of the length of the cable. Displacement of the guide surfaces relative to one another as part of the stripping process can result, for example, in further displacement of the tool jaws or the entire stripping tool relative to the cable or its surrounding area, particularly in the case of cables, which may be the case in particular in the case of cables whose long end facing the free end area is fixedly fixed in the surrounding area, for example in the case of underground cables.

[0023] Alternatively, both partial cutting bodies of the same tool part can have cutting portions that are axially movable in opposite directions. In combination with the above-described wedge structure of the tool part base, it is achieved that each partial cutting body, and thus each cutting portion, moves along the guide surface of the wedge structure, i.e., in particular in the direction of the inclination of the wedge structure. This results in the above-described stripping of the cable.

[0024] Furthermore, opposing tool parts may each comprise a first partial cutting body with a cutting portion and a second partial cutting body with a retaining element. The cutting portions of the first and second partial cutting bodies may be arranged diagonally spaced apart from each other. This means that the cutting portion of the first tool part is arranged opposite the retaining element of the second tool part, and the retaining element of the first tool part is arranged opposite the cutting portion of the second tool part. Thus, the cutting portion of the first tool part does not cut against the opposite cutting portion, but actually cuts against the retaining element. In this way, the above-mentioned axial displacement of the cooperating partial cutting bodies of the first and second tool parts occurs as soon as the cutting portion of the first tool part and the retaining element of the second tool part come into contact or nearly come into contact with each other when the opposing tool parts are moved together. The retaining element can also be formed by a cutting portion which is formed with an obtuse angle or a circular shape or which has a sawtooth profile.

[0025] In one embodiment, the first cutting body has a first cutting portion in an end face region facing the second cutting body, and the second cutting body has a second cutting portion in an end face region facing the first cutting body. This design allows the forces acting on the cutting bodies to be distributed symmetrically over the two cutting bodies. This has the advantage that equal forces in opposite axial directions are obtained, so that partial regions of the insulating sheath of the cable to the left and right of the cutting point are displaced in opposite directions relative to the cable core.

[0026] When the partial cutters are displaced axially away from each other, not only the cutter but also the two cut sections are separated, each of which closes an end face of the partial cutter. At least one of the cut sections pushes the insulating sheath forward during the axial displacement.

[0027] Furthermore, the two partial disconnected bodies can be connected by at least one restoring element, the restoring force of which tends to move the two partial disconnected bodies towards each other. The restoring element can in particular be a spring element, such as a coil spring or a leaf spring, the restoring force of which tends to move the two partial disconnected bodies towards each other.

[0028] The restoring element can terminate, for example, on the end face of each partial cutting body facing away from the other partial cutting body. Thus, the force acts on the outside of the cutting bodies and connects them over their entire axial length. Alternatively, the restoring element can be arranged on the tool part base or tool jaw of the stripping tool. In this case, a pressure spring is recommended that acts on the cutting body from the outside, i.e., from the end face of the cutting body facing away from the cutting portion. In this case, the restoring element can also be configured as a spring element, with a leaf spring being particularly advantageous.

[0029] The restoring element reliably moves the partial cutting bodies, e.g., their cutting portions or their cutting portions and the holding element, into an initial position in abutment with one another, with displacement against the restoring force of the restoring element occurring only during axial displacement of the two partial cutting bodies relative to one another following the cutting.

[0030] The cutting body or partial cutting body of each tool part, respectively, is preferably pivotable relative to the tool jaws about the longitudinal axis of the tool jaws. The pivotable arrangement of the cutting body or partial cutting body on the tool jaws can advantageously be used to achieve a pivoting of the cutting portion around the insulating sheath of the cable, thereby improving or supporting the cutting result, since at least at the beginning of the cutting process, a cutting action is performed not only in the radial direction but also in the circumferential direction of the insulating sheath. Furthermore, the pivotability of the cutting bodies or partial cutting bodies can also be used to optionally displace cutting bodies or partial cutting bodies that are not optimally positioned in the desired receiving position of the tool jaws, preferably as part of the process of fitting them to the tool jaws, in which the opposing tool parts are moved towards each other and thus one or two opposing pivotable cutting bodies or partial cutting bodies are also pivoted to the desired position.

[0031] Furthermore, the cutting bodies and the partial cutting bodies can be formed in a conical shape. In particular, a first partial cutting body can taper axially toward an adjacent second partial cutting body of the same tool part, and the second partial cutting body can taper in the opposite axial direction. According to this design, the partial cutting body is not formed as, for example, a semi-cylindrical shape, but is actually formed as a cone, the diameter of which tapers. This conical design allows the partial cutting body to pivot around the longitudinal axis of the tool part. The cutting body or partial cutting body can each pivot by 1° to 5°, in particular 2.5°. Corresponding to the conical shape of the cutting body or partial cutting body, the tool part base is preferably also formed conically on its radially inwardly facing surface, the conical shapes and sizes of the tool part base and the cutting body being particularly adapted to one another such that they preferably completely abut one another in the initial position. However, as soon as an axial displacement of the cutting body or partial cutting body relative to the tool part base occurs, the diameters of the tool part base and the cutting body or partial cutting body no longer coincide in the same cross section, so that the tool part base and the cutting body or partial cutting body only come into linear contact on their opposing surfaces. Therefore, it is particularly preferred that the cutting body or partial cutting body is axially aligned with the tool part base. The longitudinal axes of the two partial cutting bodies within the tool part base remain parallel to each other.

[0032] If the cutting body is formed by two partial cutting bodies, each partial cutting body can in particular be pivotable by approximately 2.5°, so that during the movement of the tool parts together a corresponding movement of the partial cutting bodies, and therefore also of the assigned cutting portions and / or holding elements, is achieved, while the cutting portion or portions each cut into the insulating sheath of the cable. Preferably, no axial displacement of the cutting body, or of the partial cutting body, occurs yet in this part of the cutting process.

[0033] In particular, the cutting bodies or partial cutting bodies, respectively, can be pretensioned into a forwardly pivoted position, which, as already mentioned, can result in a more favorable cutting behavior of the cutting section or sections, respectively. Furthermore, the tapered configuration of the conical partial cutting bodies or cutting bodies ensures that the axes of the partial cutting bodies remain parallel to one another, if possible.

[0034] The cutting body of the tool part can further have an end stop for the cable received therein, the axial end stop of the cutting body limiting the length of the cable inserted between the tool jaws of the stripping tool, thereby simultaneously determining the length of the cable core exposed by stripping.

[0035] It is particularly preferred that the axial end stop can be manually moved relative to the tool jaw by a user of the stripping tool. The end stop can be displaced outward, for example, along a guide rail of the cutting body, the tool part base, or the tool jaw. In this way, the end stop is attached to the cutting body, the tool part base, or the tool jaw. In particular, for example, the cutting body has a guide rail through which a partial area of ​​the end stop passes, so that the end stop can be displaced towards or away from the tool jaw.

[0036] The end stop is preferably provided with a lock that allows the end stop to be fixed in a desired position. In one embodiment, in this regard, latch means or screws can be provided that exert a holding force on a partial area of ​​the cutting body, such as a guide rail.

[0037] Based on this stripping tool, it can finally be proposed that at least a first tool jaw is linearly displaceable relative to the second tool jaw or swivelable about a pivot axis. Thus, the tool jaws can generally be moved together in various ways. Stripping tools with tool jaws that are linearly movable relative to one another form a group of stripping tools. In this case, the stripping tool can be configured, for example, to have a tool jaw that is fixed relative to the handle of the tool body and a tool jaw that is linearly movable in contrast, so that the movable tool jaw is displaced towards the fixed tool jaw for the stripping process. A second group of stripping tools comprises tools in which at least one tool jaw, preferably both tool jaws, are pivotable about a pivot axis. In the case of two tool jaws that are displaceable towards each other, the tool jaws may be pivotable about a common pivot axis or each about an individual pivot axis.

[0038] In addition to the stripping tool, a pair of tool parts for the stripping tool is presented, whereby the stripping tool is formed according to the type described above. The stripping tool thus has a pair of tool parts, including a first tool part and a second tool part, for stripping a cable having a cable core and an insulating sheath. A cutting section acting on the cable during the stripping process is further provided, each tool part having a cutting body for receiving a partial region of the cable. The cutting body has a cutting section with a cutting tip, whereby the cutting tip defines a free space of the cutting body that can also be received to receive the cable core. The tool part has a tool part base that is received in the tool jaws, whereby the cutting body of the tool part is displaceable relative to the tool part base in an axial direction perpendicular to the engagement direction. The tool part base and the cutting body are operatively coupled to one another and have guide surfaces that allow displacement after overcoming a holding force. The guide surfaces extend at the same obtuse angle relative to the engagement direction. Application of a force to the cutting body can be achieved only by displacement of the tool jaws in the engagement direction, which application of force displaces the guide surface of the cutting body, and thus the cutting body, relative to the guide surface of the tool part base with an axial movement component corresponding to the angle.

[0039] The pair of tool parts is therefore designed to function as shown when received in a corresponding stripping tool, and this design provides the advantages and functionality described above with respect to the stripping tool. The features of the stripping tool that relate to the formation of the pair of tool parts apply equally to the presented pair of tool parts for the stripping tool.

[0040] Finally, a method for stripping a cable having a cable core and an insulating sheath is presented, the method comprising the following method steps: - placing a cable between two opposing cutting bodies of the first tool part and the second tool part, each having at least one cutting portion; - moving the first tool part towards the second tool part in an engagement direction; - cutting an axial section of the insulating sheath of the cable using a cutting part of the first tool part and a cutting part of the second tool part; - displacing the cutting body of the tool part relative to the tool part base of the tool part in an axial direction perpendicular to the engagement direction, the guide surfaces of the tool part base and the cutting body being operatively connected to each other and extending at the same obtuse angle relative to the engagement direction, allowing displacement of the cutting body after overcoming the holding force, the application of a force on the cutting body being effected solely by a displacement of the tool jaws in the engagement direction, which application of force results in a displacement of the guide surface of the cutting body relative to the guide surface of the tool part base, and thus of the cutting body, with an axial movement component corresponding to the angle; - Separating an axial section of the insulating sheath of the cable by displacing the cutting body relative to the tool part base.

[0041] The proposed method provides for at least a two-step procedure. In a first step, opposing tool parts are moved toward each other to cut the insulating sheath of the cable. The tool parts are thereby moved toward each other until the cutting tips of the opposing cutting parts or at least partial regions of the opposing cutting parts come into contact with each other or at least nearly come into contact with each other. During the first method step, preferably, self-locking of the cutting parts occurs, so that only the insulating sheath is cut, and no associated axial movement of the insulating sheath relative to the cutting parts and thus relative to the cable core yet takes place. The second step of the procedure is initiated by the user moving the tool jaws and thereby also bringing the tool parts of the stripping tool closer together, thereby releasing the blocking and, in particular, optionally releasing the self-locking effect of the cutting part by the sum of the forces acting on the tool parts, in particular by adding the opposing forces acting on the cutting part to generate a resultant axial force, which ultimately results in an axial displacement of the cutting body or its partial cutting body, respectively. In particular, the two partial cutting bodies are moved away from each other, i.e. in opposite axial directions, so that the cut end pieces of the insulating sheath are moved relative to the cable core of the cable.

[0042] The displacement of the cutting body relative to the tool part base is achieved by applying a force by displacing the first tool part towards the second tool part, with the effect that at least a partial region of the cutting body of each tool part is pressed against at least one guide surface of the axially inclined wedge structure. With continued application of the force, the partial region of the cutting body or partial cutting body is guided downwards along the inclined guide surface starting from the apex of the wedge of the wedge structure and is simultaneously moved axially until it reaches its end position. The same result occurs if the cooperating guide surfaces are of a matching conical shape. The end position is determined by the tool jaws. The tool jaws are moved together or, optionally, by a restoring element. The restoring force of the restoring element attempts to return the cutting body or a partial region of the cutting body to its initial position. Alternatively, the restoring element connects two partial cutting bodies of the cutting body to each other and attempts to move them one on top of the other. The end position is further defined at least by the abutment of the tool parts on which the cutting means are arranged. The end position is further defined at least by the abutment of the tool part base of the first tool part with the tool part base of the second tool part.

[0043] The axial displacement of the cutting bodies preferably includes a mutually opposing axial displacement of the first and second partial cutting bodies of the cutting bodies. In particular, this allows for symmetry of the displacement movement of the partial cutting bodies relative to the tool part base of the respective tool part. Starting from the cutting point, two opposing forces are applied to the insulating sheath, which simplifies stripping of the cable. The mutual displacement of the two partial cutting bodies may, on the one hand, include a mutual displacement of the two cutting parts. Alternatively, the displacement of the two partial cutting bodies may include the first partial cutting body including the cutting portion being removed from the second partial cutting body including the retention element.

[0044] With respect to the two partial cutting bodies of the cutting body, each partial cutting body can in particular support a cutting part, so that the first cutting part arranged in the end surface region of the first partial cutting body facing the second partial cutting body can be separated from the second cutting part arranged in the end surface region of the second partial cutting body facing the first partial cutting body, so that moving two adjacent partial cutting bodies away from each other simultaneously results in a particularly centrally and symmetrical separation of the two cutting parts of one cutting body. [Brief explanation of the drawings]

[0045] The following description is based on the accompanying drawings, which show only exemplary embodiments, and in which components that are described only on the basis of one of the exemplary embodiments and that are not replaced by other components due to the special features highlighted in the case of other exemplary embodiments are therefore described as components that are also usable, at least in some cases, in the other exemplary embodiments. [Figure 1] FIG. 1 relates to a first embodiment and is a perspective view of a stripping tool including a pair of tool parts arranged in tool jaws. [Figure 2] FIG. 2 shows the working head of the stripping tool in an exploded perspective view of the pair of tool parts of FIG. [Figure 2a] FIG. 2a shows a perspective view of the tool jaws. [Figure 2b] FIG. 2b is a cross-sectional view of the tool part taken along line IIb in FIG. 2a. [Figure 2c] FIG. 2c shows a cross-sectional view along line IIc in FIG. [Figure 3] FIG. 3 is a perspective view of a pair of tool parts in an initial position partially moved together. [Figure 4] FIG. 4 is a perspective view of one of the tool parts of FIG. [Figure 5] FIG. 5 is a perspective view of the pair of tool parts of FIG. 3 in a fully moved together end position. [Figure 6] FIG. 6 is a perspective view of one of the tool parts of FIG. [Figure 7]FIG. 7 is a cross-sectional view of a pair of tool parts taken along line VII of FIG. [Figure 8] FIG. 8 is a cross-sectional view of a pair of tool parts taken along line VIII in FIG. [Figure 9] FIG. 9 is a perspective view of a stripping tool according to another embodiment, having a pair of tool parts arranged in the tool jaws. [Figure 10] FIG. 10 is a perspective view of one of the tool parts having a tool part base and cutting body for a cable. [Figure 11] FIG. 11 is a perspective view of the pair of tool parts of FIG. [Figure 12] FIG. 12 is a perspective view of a pair of tool parts in an initial position partially moved together. [Figure 13] FIG. 13 is a perspective view of one of the tool parts in the initial position of FIG. 12 with the cable encased therein. [Figure 14] FIG. 14 is a perspective view of the pair of tool parts of FIG. 11 in a fully moved together end position. [Figure 14a] FIG. 14a is a cross-sectional view taken along line XIVa in FIG. [Figure 15] FIG. 15 is a cross-sectional view taken along line XV in FIG. 14 and an enlarged view of the circled portion. [Figure 16] FIG. 16 is a cross-sectional view of another embodiment of a pair of tool parts in a finished position moved together, with an enlarged view of the circled portion. [Figure 17] FIG. 17 is a perspective view of another possible embodiment of a tool part. [Figure 18] FIG. 18 is a perspective view of the journal of the tool part shown in FIG. [Figure 19] FIG. 19 is an enlarged perspective view of area XIX in FIG. [Figure 20] FIG. 20 is a perspective cross-sectional view taken along line XX in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0046] 1, a stripping tool 1 is shown and described. The stripping tool 1 is here formed in the form of a rod-shaped drive 10 having a handle region 23 and a working head 24. Alternatively, the stripping tool 1 can also be formed, for example, as a substantially gun-like drive part.

[0047] Drive parts or stripping tools of this type are known, for example, from US Pat. No. 5,629,999 (US Pat. No. 5,629,999) or from US Pat. No. 5,629,999 (US Pat. No. 5,629,999), respectively. The stripping tool 1 may alternatively have an electric spindle drive. Such hand tools are known, for example, from US Pat. No. 5,629,999 (US Pat. No. 5,629,999). The contents of these international or US publications, respectively, are incorporated in their entirety into the disclosure of the solution described herein, and it is also intended that the features of these international or US publications be included within the scope of the claims herein.

[0048] Two tool jaws 2, 3 that are linearly movable towards one another are arranged on the work head 24. During operation of the stripping tool 1, the first, movable tool jaw 2 is preferably linearly displaceable onto the second, preferably fixed tool jaw 3. The drive is preferably electrohydraulic, for which purpose an accumulator 25 can for example also be provided at the end of the handle region 23. The accumulator 25 can also be used, for example, to power a hydraulic medium pump (not shown) and a control unit (not shown).

[0049] The tool jaws 2, 3 are carriers for a pair of tool parts 4, 5, which comprise a first tool part 4 and a second tool part 5, which are preferably held in an exchangeable manner in the tool jaws 2, 3. In particular for easy removal of the tool parts 4, 5 from the tool jaws 2, 3 or for changing the tool parts 4, 5, a screw-on or latch-fixing of the tool parts 4, 5 can be provided in the tool jaws 2, 3, respectively.

[0050] The tool parts 4, 5 may preferably be formed with the same shape so that either tool part 4, 5 can be attached to either tool jaw 2, 3.

[0051] The tool parts 4, 5 in the embodiments shown in the following figures are configured for stripping a cable 8. In the usual way, such a cable 8 comprises a cable core 6, preferably comprising a plurality of strands, and an insulating sheath 7 surrounding the cable core 6. To be able to establish a conductive connection of the cable 8, the cable core 6 must first be stripped by removing an axial portion of the insulating sheath 7 to expose a corresponding portion of the cable 8.

[0052] In use, in a preferred embodiment, the tool parts 4, 5 completely remove the insulating end piece of the insulating sheath 7 by incising and / or cutting the insulating sheath 7 at specific locations of the cable 8 surrounded by the tool parts 4, 5.

[0053] Each tool part 4, 5 has a cutting body 9 and a tool part base 12 on which the cutting body 9 is held. The tool part base 12 and the cutting body 9 are operatively connected to each other. Each cutting body 9 is formed from a pair of semi-cylindrical partial cutting bodies 13, 14 held in the tool part base 12. The two partial cutting bodies 13, 14 together are referred to as the cutting body 9. Each tool part base is particularly fixedly attached to the tool jaws or is formed integrally with the tool jaws. The two partial cutting bodies 13, 14 are displaceable in the axial direction a relative to them. The cutting bodies 9 define a receiving area formed when viewed in a cross section perpendicular to the longitudinal direction of the cable 8 guided between the tool parts 4, 5. Each cutting body 9 is connected to one of the tool parts 4, 5 and partially surrounds the inserted cable 8, for example in a substantially semicircular shape. The two cutting bodies 9 therefore preferably complement each other to form a generally overall cylindrical receiving part having a free space 26 for receiving the cable 8 therein when the tool parts 4, 5 are moved together. Receiving means, quite generally, that the cable is partially cut when it is received in that free space, depending of course on the diameter of the cable.

[0054] As further shown in FIG. 2 , in this exemplary embodiment, each semi-cylindrical partial cutting body 13, 14 has a cutting portion 16, 17 with a cutting tip 11. In cross section, the cutting tip 11 is also formed semicircular and defines a free space 26 for receiving the cable core 6 of the cable 8. The free space 26 therefore has a diameter that substantially corresponds to the diameter of the cable core 6, but is slightly larger, for example, by 1 mm or 2 mm or a fraction thereof. The cutting portions 16, 17 are preferably integrally formed on the respective partial cutting body 13, 14 and preferably made of the same material as the cutting body 13, 14. In the longitudinal direction of the cutting body 9, several cutting portions 16, 17 can be provided one after the other on one partial cutting body 13, 14. It should be understood that the illustration is not intended to be limiting in this respect. 3 and 4, in the initial position in which the tool parts 4, 5 have been partially moved together, the radially inwardly directed and mutually facing cutting tips 11 of the opposite cutting sections 16, 17 leave a radially inner free space 26, the diameter of which is adapted to the diameter of the cable core 6 of the cable 8 to be stripped. Thus, when the tool parts 4, 5 are then completely moved together, the cutting sections 16, 17 incise or completely cut through the insulating sheath 7, with the cutting tips 11 moving to a depth that touches the periphery of the cable core 6 but preferably without damaging the cable core 6 or the individual strands passing therethrough.

[0055] As can be seen by comparing Figures 3 and 4, which show the initial position in which the tool parts 4, 5 have moved together and are in complete contact to cut into the insulating sheath 7, with Figures 5 and 6, which show the final position in which the tool parts 4, 5 have moved together, the end region R of each partial cutting body 13, 14 protrudes beyond the tool part base 12 in the circumferential direction. When the tool parts 4, 5 are moved together, the end regions R of the tool part bases 12 of each of the tool parts 4, 5, which project towards the opposite tool part 4, 5, come into contact with each other and are displaced by an externally applied operating force in the axial direction a on the one hand and in the circumferential direction on the other hand, as can be seen, for example, by comparing Figures 4 and 6, as far as pivotability is provided, and therefore also in the axial direction a of the stripped piece of insulating sheath 7.

[0056] 11, the partial cutting bodies 13, 14 have contact surfaces 31, 32, 33, and 34. In the case of the partial cutting bodies 13, 14, which are preferably formed as generally spherical caps, the contact surfaces 31, 32, 33, and 34 are formed on axially extending surfaces facing the opposing partial cutting bodies 13, 14 in the moved together position. These contact surfaces 31, 32, 33, 34 come into contact with one another after completion of the cutting into the insulating sheath 7, for example in the situation of Figure 3, and then, as a result of the guide surfaces 21, 44 formed on and operatively connected to the tool part base 12 and the partial cutting bodies 13, 14, there is no relative shift between the contact surfaces 31, 32, 33, 34, and therefore the two opposite partial cutting bodies 13, 14 are displaced together in the axial direction a to the positions shown in Figures 5 or 6 or 15, respectively. Guide surface 44 is on cutting body 9 and is a surface that corresponds to guide surface 21 on tool base part 12, as shown for example in Figure 2. Guide surface 21 and guide surface 44 extend at the same obtuse angle relative to the engagement direction. Guide surfaces 21, 24 are also referred to as inclined surfaces.

[0057] Each cutting body 9 of the opposing tool parts 4, 5 here has, in an exemplary manner, two partial cutting bodies 13, 14, each with a cutting portion 16, 17 (see Figures 7 and 8). The cutting tips 11 of the cutting portions 16, 17 have an acute cutting angle β, as shown in Figure 13, of, for example, about 10° to about 18°, more preferably about 15°. The partial cutting bodies 13, 14 are separable from each other in the region of the cutting portions 16, 17. The cutting portions 16, 17 are formed on end face regions 15 of the partial cutting bodies 13, 14, respectively, facing the adjacent partial cutting bodies 13, 14.

[0058] In addition to the cutting bodies 9 of each tool part 4, 5, which include the partial cutting bodies 13, 14 that form the cutting portions 16, 17, each tool part 4, 5 further has a tool part base 12. The cutting bodies 9, and more particularly the partial cutting bodies 13, 14, are axially displaceable relative to the tool part axis. As shown in Figures 6 and 8, the first partial cutting body 13 is axially displaceable in a direction -a starting from an initial position in Figure 4 or 7, while the second partial cutting body 14 is displaceable in the opposite axial direction +a. For this purpose, the partial cutting bodies 13, 14 are mounted in a linearly movable manner on the tool part base 12. Alternatively, however, it is also possible, although not a preferred embodiment, to mount the partial cutting bodies 13, 14 directly on the tool jaws 2, 3.

[0059] The tool part base 12 has a wedge structure 19 on its interior, facing the free space 26, with a wedge apex 20. As shown in particular in FIGS. 7 and 8, a flat guide surface 21 is inclined from the wedge apex 20 toward the axial direction a at a wedge angle α. The wedge angle α is preferably between 5° and 15°, in particular about 9°. The guide surface 21 of the tool part base 12 thereby forms web-like partial regions of the wedge structure 19 of the tool part base 12, as can be seen in FIG. 2c. In practice, the guided bodies 13, 14 are thereby guided only on the individual web-like partial regions aligned in the axial direction a. However, guiding the partial cutting bodies 13, 14 over the entire surface of the wedge structure 19 is generally possible, although this is not a preferred embodiment. The web-like partial areas in the radially outer region of the wedge structure 19 or of the tool part base 12 distribute the forces linearly downwards, i.e. directly to the individual tool jaws 2, 3, without first distributing the forces curvilinearly in the lower regions of the wedge structure 19 facing the tool jaws 2, 3. In this embodiment, the guide surfaces 21 are arranged mirror-symmetrically with respect to the cross section of the wedge structure 19 in which the common wedge apex 20 is formed.

[0060] The individual tool part bases 12 have contact surfaces 35, 36, 37, 38 that abut one another when the tool jaws 2, 3 have moved substantially completely together.

[0061] An axial end stop 22 is also provided, which is inserted into the stripping tool 1 and defines the length of the cable 8. The axial end stop 22 is provided, by way of example only, on the second partial cutting body 14. The axial end stop 22 can be displaced, for example, along a guide rail 27, which is connected to the partial cutting body 14. The guide rail 27 passes through the end stop 22. The end stop 22 can be fixed in place to the guide rail 27 by means of a lock 28, for example a screw. In an alternative embodiment, the end stop 22 is not part of the cutting body 9, but is, for example, part of the tool jaws 2, 3.

[0062] 9 to 15 disclose further possible embodiments of the stripping tool 1. The stripping tool 1 has a working head 24 with two tool jaws 2, 3 that are pivotable relative to one another. Each tool jaw 2, 3 is pivotable relative to the other tool jaw 2, 3 about a separate pivot axis, or alternatively, about one and the same pivot axis.

[0063] The stripping tool 1 of Figures 9 to 15 may further comprise a handle region 23, which may be formed, for example, in a rod-like manner as shown here, or which may have, for example, a gun-like shape. The handle region 23 comprises an actuator element 29, which, when activated, allows a user to start the stripping process of the stripping tool 1. The user activates the actuator element 29 to move the tool jaws 2, 3 together, i.e., to move them towards each other. The movement of the tool jaws 2, 3 together may be electrically and / or electrohydraulically supported.

[0064] As shown in more detail in FIGS. 10 and 11 , each of the tool parts 4, 5 has a tool part base 12 and a cutting body 9 with two partial cutting bodies 13, 14. The two partial cutting bodies 13, 14 are displaceable relative to each other in the axial direction a and are connected to each other by means of a restoring element 18. In an exemplary manner, the restoring element 18 is formed as a tension spring, the restoring force of which acts to bring the two partial cutting bodies 13, 14 into an adjacent position. This adjacent position is shown, for example, in FIG. 11 . The tool part base 12 has an internally located wedge structure 19 with a wedge apex 20 and two conical guide surfaces 21 inclined at a wedge angle α starting from the wedge apex 20, the guide surfaces 21 inclined in opposite axial directions +a and −a. In contrast to the embodiment according to FIGS. 1 to 8 , the guide surfaces 21 are not flat but are effectively curved, in particular semicircular in cross section. The inner diameter of the tool part base 12 expands outward due to its conical shape.

[0065] 10 and 11, the two partial cutting bodies 13, 14 of the cutting body 9 are also formed in a conical shape. The outer diameter of the partial cutting bodies 13, 14 varies along the axial direction a in accordance with the shape of the guide surface 21 of the wedge structure 19 of the tool part base 12, so that the smaller end of the cone is located in the region of the wedge apex 20 of the wedge structure 19. Starting from the axial center of the entire cutting body 9, the two partial cutting bodies 13, 14 therefore expand outwards (in the peripheral region of the stripping tool 1). Due to the corresponding conical shapes of the tool part base 12 and the partial cutting bodies 13, 14, the partial cutting bodies 13, 14, in addition to the possibility of axial displacement, can pivot about their longitudinal direction, preferably about the cable 8 to be stripped. Each partial cutting body 13, 14 can pivot relative to the other, for example, by approximately 2.5°, thus 5°. This conical shape also allows for centering of the partial cutting bodies 13, 14 relative to the tool part base 12 during the displacement process of the partial cutting bodies 13, 14 when the tool parts 4, 5 move together. This is because the diameters of the partial cutting bodies 13, 14 and the guide surface 21 are no longer coincident, i.e., different in the same cross section. Therefore, the tool part base 12 and the partial cutting bodies 13, 14 come into line contact. This can be seen particularly in FIG. 14a.

[0066] Regarding the different design compared to the first embodiment of the stripping tool 1, the structure of the tool parts 4, 5 described with reference to Figures 9 to 15 can also be provided in the embodiment of Figures 1 to 8. The different design, in particular the conical shape, is not limited to tool jaws 3, 4 that can be pivoted relative to one another.

[0067] Like the embodiment of Figures 1 to 8, the stripping tool 1 of Figures 9 to 15 can also have two opposing cutting portions 16, 17, whose cutting depth is the same as or slightly smaller than the radial thickness of the insulating sheath 7 of the cable 8. For example, the cutting depth corresponds to about 0.8 to 0.95 times the radial thickness of the insulating sheath 7, so that the cutting tip 11 does not engage with the cable core 6 when performing the cutting process, and preferably a thin web that can be easily separated by tearing remains adjacent to the cable core 6 between the cable core 6 and the cutting tip 11.

[0068] The cable 8 may include a fine-wire cable core 6 that includes a plurality of individual strands. The cable 8 may also be formed as a flat cable, in which case the individual strands are in the form of a thin, flat plate. The insulating sheath 7 may be made of rubber, polyethylene, polyvinyl chloride, or other materials.

[0069] Figure 16 shows an alternative embodiment of a pair of tool parts 4, 5. Unlike the embodiment of Figure 15 or Figures 7 and 8, the tool part 4, 5 has two partial cutting bodies 13, 14 that do not have cutting portions 16, 17, respectively. In contrast, only one of the partial cutting bodies 13, 14 has a cutting portion, for example the cutting portion 17, while the other partial cutting body 13, 14 has a holding element 30. According to the embodiment illustrated in Figure 16, the first partial cutting body 13 has the holding element 30, and the second partial cutting body 14 has the cutting portion 17. This proposed configuration is the same for both opposing tool parts 4, 5. According to this embodiment, the first partial cutting body 13 of the first and second tool parts 4, 5 is formed by the corresponding holding element 30 for fixing the cable 8 to be stripped, while the second partial cutting body 14 of the first and second tool parts 4, 5 cuts the insulating sheath 7 of the cable 8. The retaining element 30 preferably cooperates only with the outer surface of the cable 8 and therefore only with the insulating sheath. Preferably, the retaining element 30 does not engage with the insulating sheath 7 or only with part of the thickness of the insulating sheath 7.

[0070] A further embodiment can provide that the holding element 30 and the cutting portion 17 are not located directly opposite each other in the same radial cross section of the partial cutting bodies 13, 14, but are instead arranged diagonally, i.e. the holding element 30 of the first tool part 4 is located opposite the cutting portion 17 of the second tool part 5 and the holding element 30 of the second tool part 5 is located opposite the cutting portion 17 of the first tool part 4.

[0071] 17 to 20, there is shown an embodiment of all the tool parts 4, 5 described herein, which is a possible design independent of the specifically shown embodiment of the tool parts 4, 5. This embodiment relates to further options for achieving the desired holding force required to translate from cutting into the insulating sheath 7 into axial displacement of the partial cutting bodies 13, 14 when performing the cutting process. As shown, the holding force is achieved by a journal 39, which is guided in the part-cutting bodies 13, 14, receives a spring force from a spring element 43, and can cooperate with a stopper 40 formed on the tool part base 12, for example, up to the state shown in Figures 3 and 4. As a result, the journal 39 has a protrusion 41 that abuts against the stopper 40, as shown in Figure 19, and this protrusion 41 moves below the height position of the stopper 40 when the journal 39 is lowered, and then moves axially below the stopper 40 in a guide groove 42 of the tool part base 12. The lowering of the journal 39 can be initiated, for example, starting from the position shown in Figures 3 and 4, by further moving the tool jaws 3, 4 or the tool parts 4, 5 together. By further moving the tool parts 4, 5 together, the restoring force of the spring element 43 coupled to the journal 39 is overcome and a corresponding displacement of the partial cutting bodies 13, 14 relative to the tool part base 12 is achieved. This is therefore the generation of a holding force based on a substantially positive connection.

[0072] The mode of operation of the illustrated stripping tool 1 will now be explained in more detail, firstly in relation to the method of stripping a cable 8 inserted into the stripping tool 1.

[0073] The user first places the cable 8 to be stripped between the tool jaws 2, 3 of the working head 24 of the stripping tool 1. In doing so, the user preferably places the free end region of the cable 8 against the end stop 22, which will later define the end of the cable 8 from which the insulating sheath 7 will be removed. The user then activates the stripping tool 1 via the actuator element 29 and the hydraulic medium pump of the stripping tool 1. Although not shown in detail, a ram movement can be performed in the stripping tool 1, which acts on the displaceable first tool jaw 2 in Figure 1 or on both tool jaws 2, 3 in Figure 9. The tool jaws 2, 3 and tool parts 4, 5 move together and an axial section of the insulating sheath 7 of the cable 8 is cut using the corresponding cutting portions 16, 17. As long as the cutting portions 16, 17 are still in contact only with the insulating sheath 7, a frictional force acts on the cutting portions 16, 17, preventing the partial cutting bodies 13, 14 from moving due to axial displacement. When the user displaces the tool jaws 2, 3 in a further step, and thus the tool parts 4, 5 also move closer to one another, the force acting preferably on the tool parts 4, 5 as a whole, in particular the optional self-locking effect of the cutting parts 16, 17, is released. As a result, the forces acting in opposite directions on the inclined surfaces of the cutting parts 16, 17 are added together, resulting in a resultant force in the axial direction a. This causes an axial displacement of the partial cutting bodies 13, 14. This cuts or at least incises the insulating sheath 7, but the cutting tips 11 of the cutting parts 16, 17 are not yet in contact with the cable core 6 and are only a very small distance away from the cable core 6. Depending on the type of cable, it cannot be excluded that the cutting tips may come into contact with the cable core. The axial displacement of the partial cutting bodies 13, 14 ultimately tears the insulating sheath 7 and the end region of the torn insulating sheath 7 moves relative to the cable core 6.

[0074] The cutting tip 11 has a circumferential edge region at one end. As the cutting process progresses, preferably as soon as at least the edge regions of the cutting tips 11 of the cutting portions 16, 17 come into contact with each other, the opposite cutting portions 16, 17 act like a single body with forces acting from opposite directions. These forces add up to a resultant force acting in the axial direction a (or +a and -a, respectively). The resulting force can be, for example, 10% to 20% of the force applied to the stripping tool. The movement blockage, in particular any self-locking of the cutting parts 16, 17, is released and a displacement of the two partial cutting bodies 13, 14 of the cutting body 9 occurs relative to the respective tool part base 12, i.e. in each case along the inclined guide surfaces 21 (web-like partial areas) of the wedge structure 19. For this purpose, the cutting parts 16, 17 of the tool parts 4, 5 can be separated from one another in the region of the cutting tip 11. In the initial position of the tool jaws 2, 3 according to a given embodiment, in which they have been partially moved together, the cutting tip 11 is preferably located above the wedge apex 20 of the wedge structure 19, i.e. the wedge apex 20 and the cutting tip 11 are preferably located within the same cross section of the tool parts 4, 5.

[0075] By continuously applying the force of the tool jaws 2, 3, the two partial cutting bodies 13, 14 are pushed apart along the guide surfaces 21 of the wedge structure 19, whereby the likewise separating cutting portions 16, 17 move the cut or nearly cut pieces of the insulating sheath 7 relative to the cable core 6, thereby forming stripped pieces of the cable 8. The user can then very easily pull the piece of the insulating sheath 7, which has been separated at its end and is abutting the end stop 22, out of the cable core 6, for example by pulling on the remaining cable 8.

[0076] The tool parts are preferably, in particular, 25 mm 2 ~300mm 2The stripping tool is designed to cut a cross section of approximately 9 mm to 11 mm. In practice, the proposed stripping tool has proven effective for cables, for example, with a cable core diameter of approximately 9 mm to 11 mm and an insulating sheath outer diameter of approximately 13 mm to 19 mm. The cutting tip of the cutting part is preferably formed in a semicircular shape and may define a free space of, for example, a diameter of 12 mm. A cutting angle of approximately 5° to 20° of the cutting part has been found to be particularly preferred. However, it should be understood that the above information is merely an example to describe the approximate dimensions of the stripping tool or its components, and is in no way limiting.

[0077] 9, which has two tool jaws 2, 3 pivotable relative to one another, operates in a similar manner. During actuation of the actuator element 29, the tool jaws 2, 3 together with the tool parts 4, 5 arranged thereon pivot towards one another and preferably also first substantially cut the partial piece of the insulating sheath 7 of the cable 8 in at least two operating steps, after which, as the force continues to be applied, an axial separation of the partial piece of the insulating sheath 7 is effected by axial displacement of the opposite cutting body 9 or its partial cutting body 13, 14 relative to the tool part base 12 of the respective tool part 4, 5. The cutting bodies 9 each have two semi-conical shapes, with their narrow front ends aligned. The wedge apex 20 of the wedge structure 19 of the tool part base 12 is located in the transition region between the two semi-conical shapes, from which start two semi-conical guide surfaces 21, which are inclined in opposite axial directions +a and -a, respectively. The two partial cutting bodies 13, 14 are connected to each other by a restoring element 18, whereby the restoring force of the restoring element 18 presses the cutting parts 16, 17 against each other, as shown in Figure 13. This is referred to as the initial position of the tool jaws 2, 3 of the stripping tool 1, having been partially moved together, where the axial displacement of the partial cutting bodies 13, 14 in the opposite axial direction a has not yet begun. The insulating sheath 7 of the cable 8 has been cut or nearly cut, but has not yet moved relative to the cable core 6. The release of the blocking of the opposing cutting portions 16, 17 only occurs when a further force is applied by the tool jaws 2, 3. This causes the partial cutting bodies 13, 14 to move away from each other along the inclined guide surfaces 21 of the tool part base 12 against the restoring force of the restoring element 18, resulting in the end position shown in Figures 14 and 15 (or 16, respectively).

[0078] Comparing the initial positions of the tool parts 4, 5 shown in FIG. 11 with the final positions of the tool parts 4, 5 shown in FIG. 14 or 15, the partial cutting bodies 13, 14 initially protrude (radially) beyond the tool part base 12, specifically beyond their contact surfaces 35, 36, 37, and 38. As the tool jaws 2, 3 move together, the tool parts 4, 5 first contact each other at the opposing contact surfaces 31, 32, 33, and 34 of the partial cutting bodies 13, 14. This allows for favorable displacement of the journal 39, as shown, for example, in FIGS. 17 to 20. The insulating sheath 7 is cut as part of the displacement until the contact surfaces 31, 32, 33, and 34 come into contact with each other. As the tool parts 4, 5 are further moved together, the partial cutting bodies 13, 14 are moved axially by the aforementioned guide surfaces until the tool parts 4, 5 abut against the contact surfaces 35, 36, 37, and 38. After this point, further movement in the same direction is no longer possible.

[0079] In the operating sequence, the axial displacement of the partial cutting bodies 13, 14 is initiated by the overlapping of the contact surfaces 31, 32, 33, 34. The inclination of the wedge structure 19, defined by the wedge angle α, determines, inter alia, the axial displacement of the partial cutting bodies 13, 14 and therefore the total stripped pieces of the cable 8.

[0080] Due to the conical shape of the part-cutting bodies 13, 14 and the correspondingly shaped tool part base 12, the part-cutting bodies 13, 14 can not only be displaced linearly in the axial direction a, but can also be pivoted about a longitudinal axis oriented substantially parallel to the axial direction a. This is particularly advantageous in the case of stripping tools 1 with pivotable tool jaws 2, 3.

[0081] When the stripping tool 1 is reopened after stripping the cable 8, the partial cutting bodies 13, 14 are automatically guided relative to one another by the restoring force of the restoring elements 18. No further manual movement by the user is necessary.

[0082] Although the method has been described here with respect to individual steps that can be executed or initiated at will by the user, the method can also be executed continuously, in particular automatically, in the direction of the joint movement of the tool parts 4, 5 by the tool jaws 2, 3, after an initial start, until the stripping process is finished. In practice, there is preferably no distinction between the two method steps, i.e., first making an incision in the insulating sheath and then moving the separated portion or portions of the insulating sheath 7. The observer only notices the axial displacement of the cuts 16, 17, whereby the incision in the insulating sheath 7 has already been made.

[0083] The stripping tool features a tool part base 12 and a cutting body 9 having a guide surface 44 operatively connected to one another, which allows displacement after overcoming the holding force, with the guide surface 44 extending at the same obtuse angle relative to the engagement direction r. This allows the application of a force on the cutting body 9 to be achieved only by a displacement of the tool jaws 2, 3 in the engagement direction r, which application of force results in a displacement of the guide surface 44 of the cutting body 9, and thus of the cutting body 9, relative to the guide surface 44 of the tool part base 12 with a movement component in the axial direction a corresponding to the angle.

[0084] Retention can be achieved in a variety of ways, including through appropriate friction and through a secure connection.

[0085] The proposed configuration of the stripping tool 1 allows advantageous cutting and stripping results for the cable 8. The stripping tool 1 not only makes an easy-to-handle incision in the insulating sheath 7 of the cable 8, but also actually displaces and removes the insulation pieces 45 from the core of the cable 8. For this purpose, the tool parts 4, 5 have a tool part base 12 which is in particular fixedly attached to the tool jaws or formed integrally with them, and a cutting body 9 which is movable relative to the tool part base 12. The cutting body 9 is displaceable along an inclined guide surface in the axial direction of the tool parts 4, 5, i.e. in the longitudinal direction of the cable 8 arranged between the opposing tool parts 4, 5.

[0086] In addition to the axial displacement of the cutting body 9, the tool parts 4, 5 themselves and / or the cutting body 9 are preferably pivotable about a longitudinal axis corresponding to the axial direction relative to the tool jaws or tool part base 12, respectively. The pivotability can be provided by a relatively small pivot angle, preferably in the range of 1° to 5°. Independently or additionally, the tool part base 12 can have play, particularly relative to the tool jaws, which can distribute the cutting forces introduced into the cable 8 via the tool jaws during the cutting process. This means that opposing tool parts 4, 5 can be prevented from tilting or blocking each other.

[0087] The stripping tool 1, with the tool parts 4, 5 thus formed, is able to perform the cutting of the insulating sheath 7 and the movement of the insulating sheath 7 relative to the cable core 6 in two consecutive steps. The movement of the insulating sheath 7 preferably takes place only after overcoming a holding force, which does not allow movement between the operatively connected guide surfaces 44. The holding force can be achieved by establishing a friction force between the cutting body 9 and the insulating sheath 7. As explained, the holding force can also be achieved by a secure connection. As long as the cutting part is only in contact with the insulating sheath 7 of the cable 8 and not yet in contact with the cutting part of the opposite tool part 4, 5, only frictional forces between the cutting part and the insulating sheath 7 act on the cutting part. This preferably results in a self-locking connection of the cutting part, in which case no axial displacement of the cutting body 9 relative to the tool part base 12 occurs yet. An axially acting force displacing the cutting body 9 along the guide surface relative to the tool part base 12 is only generated when the opposing cutting parts of the stripping tool 1 come into contact or substantially come into contact with each other in the second step.

[0088] This causes the cut end piece of the insulating sheath 7, i.e., the insulating piece 45, to move relative to the core of the cable 8, thereby facilitating the operation of removing the end piece relative to the core of the cable 8. By bringing the tool jaws 2, 3 closer together, the cutting of the insulating sheath 7 and the movement of the insulating sheath 7 relative to the core of the cable 8 are performed simultaneously.

[0089] When the opposing cuts touch each other or only touch each other for a distance of 1 mm to a few mm (or anywhere in between), i.e. when the insulating sheath 7 is completely or nearly cut, the opposing cut mechanism can be considered as a single object on which two opposing forces act: the axial force results from an opposing force acting substantially transverse to the longitudinal direction of the cable 8.

[0090] The pre-stable cutting body 9 is released and moves relative to the tool part base 12 of the tool parts 4, 5. The resulting axial force has a magnitude in the range of, for example, 10% to 20% of the applied force of the stripping tool 1. This is sufficient to move the insulating sheath 7 relative to the core of the cable 8 even if the cross-section of the cable 8 is relatively large and, optionally, even if the material of the insulating sheath 7 is relatively hard.

[0091] The axial movement allows the end piece, which is the cut insulating piece 45 at the end of the insulating sheath 7, to be separated from the remaining insulating sheath 7, even if the end piece has not yet been completely cut. The axially generated force can optionally cause tearing, if required.

[0092] Due to the fact that the insulating sheath 7 does not need to be completely cut before the cutting body 9 is displaced relative to the tool part base 12, a predetermined distance can be maintained between the cutting part and the core of the cable 8, thereby avoiding cutting into the strands of the core of the cable 8.

[0093] The principle of the stripping tool 1 described above can also be applied to cables 8 with different outer diameters. The stripping tool 1 is also suitable for cables 8 with several insulating sheaths 7. The insulating material itself can be softer or harder, for example rubber, PVC, PE, etc. The core of the cable 8 can be one solid piece or made up of several strands. The shape of the cutting part can also be adapted to different cross-sectional shapes of the cable 8, for example flat cables 8, section cables 8, or cables 8 containing several individually insulated lines.

[0094] Tool parts 4 and 5 are especially suitable for 25mm 2 ~300mm 2 Preferably, the stripping tool 1 is designed to cut a cross section of approximately 9 to 11 mm. In practice, the proposed stripping tool 1 has proven effective for cables 8 having a core diameter of approximately 9 to 11 mm and an outer diameter of the insulating sheath 7 of 13 to 19 mm. The cutting tip, which is preferably formed in a semicircular shape, can define a free space of, for example, a diameter of 12 mm. It has been found that a cutting angle of approximately 5 to 20 degrees is particularly preferred.

[0095] However, the above information should be understood only as an example to explain the approximate dimensions of the stripping tool 1 or its components, and should in no way be understood as limiting.

[0096] The tool part base 12 advantageously has a wedge structure including at least one guide surface or at least two guide surfaces 44 tapering in opposite axial directions to a common wedge apex, whereby a wedge angle of the wedge structure defines the angle of the guide surfaces 44 of the tool parts 4, 5 relative to the axial direction. The wedge angle, i.e., the inclination of the guide surfaces 44, is preferably between 5° and 15°, and preferably about 9°. With respect to the axial direction of the tool part base 12, the wedge apex of the wedge structure is located at an axial position that corresponds to the axial position of the cutting tip in the initial position, and preferably corresponds approximately to the axial position of the cutting tip of the cutting part, which is preferably also the axial position at which the cutting of the insulating sheath 7 of the cable 8 is performed in the initial position of the stripping tool 1. When the insulating sheath 7 is completely or almost completely cut, so that the cutting tips of the opposing tool parts 4, 5 meet or at least approach each other, the two opposing cutting mechanisms can be considered as a single object on which radially opposing forces act, resulting in a combined axial force that causes the cutting body 9 including the cutting part to move axially. This causes the cutting body 9 to move on the guide surface of the wedge structure assigned to it, ultimately resulting in stripping of the cable 8. According to one embodiment, the entire surface of the wedge structure can function as a guide surface. However, it is preferred that the guide surface is formed individually, in particular only by strip-shaped partial regions.

[0097] The cutting body 9 is preferably formed in two parts, that is, two partial cutting bodies, which can be displaced in opposite axial directions when the opposing cutting sections of the stripping tool 1 come into contact with each other as described above, or when opposing forces acting on the respective beveled surfaces of the cutting sections result in axial forces. One of the partial cutting bodies can also be formed solely for holding or clamping the cable 8. Due to the shape of the cutting sections, the axial force acting on the partial cutting body 9 acts in the opposite axial direction to the other partial cutting body 9.

[0098] A first partial cutting body 9 of the partial cutting bodies 9 of the tool parts 4, 5 has, for example, a holding element for fixing the cable 8 to be stripped. In contrast, a second partial cutting body 9 of the same cutting body 9 or of each of the tool parts 4, 5 has a cutting part that is separated from the holding element by an opposite axial displacement of the two partial cutting bodies, thereby allowing the insulating sheath 7, which is usually an insulating piece 45, to be displaced over a part of the length of the cable 8. Displacement of the guide surfaces 44 relative to one another as part of the stripping process may result, for example, in further displacement of the tool jaws or the entire stripping tool 1 relative to the cable 8 or its surrounding area, particularly in the case of cables 8. This may be the case in particular when the long end of the cable 8 facing the free end area of ​​the cable 8 is fixedly secured within the surrounding area, for example in the case of underground cables 8.

[0099] Alternatively, both partial cutting bodies of the same tool part 4, 5 may have cutting portions that are displaceable in opposite axial directions. In combination with the wedge structure of the tool part base 12, each partial cutting body 9, and therefore each cutting portion, moves along the guide surface of the wedge structure, specifically in the direction of the inclination of the wedge structure. This also strips the cable 8 of its insulation.

[0100] It is further possible for each of the opposing tool parts to have a first partial cutting body 9 with a cutting portion and a second cutting body 9 with a retaining element. This allows the cutting portions of the first and second partial cutting bodies 9 to be arranged diagonally spaced apart from one another. This means that the cutting portion of the first tool part 4, 5 is arranged opposite the retaining element of the second tool part 4, 5, and the retaining element of the first tool part 4, 5 is arranged opposite the cutting portion of the second tool part 4, 5. The cutting portion of the first tool part 4, 5 therefore actually cuts against the retaining element, rather than cutting against the opposite cutting portion. In this way, when the opposing tool parts 4, 5 move together, the above-mentioned axial displacement of the cooperating partial cutting bodies of the first tool part 4 and the second tool part 5 occurs as soon as the cutting part of the first tool part 4, 5 and the holding element of the second tool part 4, 5 come into contact or nearly come into contact with each other. The holding element can also be formed by a cutting part which is formed with an obtuse angle or a circular shape or which has a sawtooth profile.

[0101] In one embodiment, the first partial cutting body 9 has a first cutting portion in an end face region facing the second partial cutting body 9, and the second partial cutting body 9 has a second cutting portion in an end face region facing the first partial cutting body 9. This design allows the forces acting on the cutting bodies 9 to be distributed symmetrically over the two partial cutting bodies. This has the advantage that equal but opposite axial forces are obtained, so that the partial regions of the insulating sheath 7 of the cable 8 to the left and right of the cutting point move in opposite directions relative to the core of the cable 8.

[0102] In the event of axial displacement of the partial cutting bodies away from each other, not only are the cutting bodies 9 further separated, but in fact the two cutting sections are also separated, each cutting section closing the end face of its respective partial cutting body 9. At least one of the cutting sections pushes the insulating sheath 7 forward during the axial displacement.

[0103] Furthermore, the two partial disconnected bodies can be connected by at least one restoring element, the restoring force of which tends to move the two partial disconnected bodies towards each other. The restoring element can in particular be a spring element, such as a coil spring or a leaf spring, the restoring force of which acts in a direction to move the two partial disconnected bodies towards each other.

[0104] The restoring element can terminate, for example, on the end face of each partial-cutting body 9 facing away from the other partial-cutting body 9. The force therefore acts on the outer surface of the cutting body 9 and connects the partial-cutting body over its entire axial length. Alternatively, the restoring element can be arranged on the tool part base 12 of the stripping tool 1 or on the tool jaws. In this case, a pressure spring is recommended which acts on the cutting body 9 from the outside, i.e., from the end face of the cutting body 9 facing away from the cut part. In this case, the restoring element can also be formed as a spring element, with a leaf spring being particularly advantageous.

[0105] The restoring element ensures that the partial cutting bodies are displaced to an initial position, in which, for example, the cutting part and the holding element abut against each other, and displacement against the restoring force of the restoring element only occurs during axial displacement of the two partial cutting bodies relative to each other following the cutting.

[0106] The cutting body 9 or partial cutting body 9 of each tool part 4, 5 is preferably pivotable relative to the tool jaws about the axial longitudinal direction of the tool jaws. Advantageously, the pivotable arrangement of the cutting body 9 or partial cutting body 9 on the tool jaws allows the cutting portion to be pivoted around the insulating sheath 7 of the cable 8. This improves or supports the cutting result, since at least at the beginning of the cutting process, a cutting action is performed not only in the radial direction but also in the circumferential direction of the insulating sheath 7. Furthermore, the pivotability of the cutting body 9 or partial-cutting body 9 can preferably also be used to arbitrarily move a cutting body or partial-cutting body that is not optimally positioned in the desired receiving position of the tool jaws as part of the process of mating the tool jaws 2, 3. In doing so, the opposing tool parts 4, 5 move towards each other and one or two opposing pivotable cutting bodies or partial-cutting bodies, respectively, also pivot to the desired position.

[0107] Furthermore, the cutting bodies 9 and the partial cutting bodies 9 can also be formed conically. In particular, a first partial cutting body 9 can taper axially towards an adjacent second partial cutting body 9 of the same tool part 4, 5, and the second partial cutting body 9 can taper in the opposite axial direction. With this design, the partial cutting bodies are not formed, for example, as semi-cylindrical bodies, but are actually formed conically, with a tapered diameter. This conical design allows the partial cutting bodies 9 to pivot about the longitudinal axis of the tool parts 4, 5. The cutting bodies 9 or partial cutting bodies 9, respectively, can be pivoted, in particular by 1° to 5°, in particular by about 2.5°. Corresponding to the conical shape of the cutting body 9 or partial cutting body 9, the tool part base 12 is preferably also formed conically on its radially inwardly facing surface. The conical shapes and sizes of the tool part base 12 and the cutting body 9 correspond to one another in particular so that in the initial position they preferably abut one another completely. However, as soon as an axial displacement of the cutting body 9 or partial cutting body 9 relative to the tool part base 12 occurs, the respective diameters of the tool part base 12 and the cutting body 9 or partial cutting body 9 no longer coincide within the same cross section, so that the tool part base 12 and the cutting body 9 or partial cutting body 9 only come into linear contact on their surfaces facing each other. It is therefore particularly preferred that the cutting body 9 or partial cutting body is axially aligned with the tool part base 12. The longitudinal axes of the two partial cutting bodies within the tool part base 12 are also kept parallel to each other.

[0108] If the cutting bodies 9 are formed by two partial cutting bodies, each partial cutting body 9 can in particular be provided pivotable by approximately 2.5°. A movement of the partial cutting bodies and thus of the assigned cutting and / or holding elements is achieved while one cutting part or cutting parts respectively cuts into the insulating sheath 7 of the cable 8. An axial displacement of the cutting bodies 9 or partial cutting bodies preferably does not yet take place at this stage of the cutting process.

[0109] In particular, the cutting bodies 9 or partial cutting bodies, respectively, can be provided with a pretension in a pivoted forward position, which, as already mentioned, can result in a more favorable cutting behavior of the cutting section or cutting sections, respectively. Furthermore, tapering the conical partial cutting bodies 9 or cutting bodies 9 ensures, if possible, that the axes of the partial cutting bodies remain parallel to one another.

[0110] The cutting body 9 of the tool parts 4, 5 may further be provided with an end stop for the cable 8 received therein. The axial end stop of the cutting body 9 limits the length of the cable 8 that can be inserted between the tool jaws 2, 3 of the stripping tool 1, thereby simultaneously determining the length of the core of the cable 8 exposed by stripping.

[0111] It is particularly preferred that the axial end stop can be manually moved relative to the tool jaws 2, 3 by a user of the stripping tool 1. For example, the end stop can be moved outward along a guide rail of the cutting body 9 of the tool part base 12 or of the tool jaws. In this way, the end stop is attached to the cutting body, the tool part base 12 or the tool jaws. In particular, for example, the cutting body 9 is provided with a guide rail that passes through a partial area of ​​the end stop, so that the end stop can be displaced towards or away from the tool jaws.

[0112] The end stops are preferably provided with locks that allow the end stops to be fixed in a desired position. In this regard, according to one embodiment, latch means or screws can be provided in partial areas of the cutting body 9, such as guide rails, for example, to apply a holding force.

[0113] Finally, based on the stripping tool 1, it can also be provided that at least the first tool jaw is linearly displaceable or pivotable about a pivot axis relative to the second tool jaw. Thus, the tool jaws 2, 3 can generally be moved together in various ways. Stripping tools 1 having tool jaws 2, 3 that are linearly movable relative to one another thereby form a group of stripping tools 1. In this case, the stripping tool 1 is formed with a tool jaw that is fixed, for example, relative to the handle of the tool body, and a linearly movable tool jaw in contrast, so that the movable tool jaw is displaced towards the fixed tool jaw for the stripping process. A second group of stripping tools 1 comprises tools in which at least one tool jaw, but preferably both tool jaws 2, 3, are pivotable about a pivot axis. In the case of two tool jaws 2, 3 that are close to each other, the tool jaws 2, 3 may be pivotable about a common pivot axis or about separate pivot axes.

[0114] In addition to the stripping tool 1, a pair of tool parts for the stripping tool 1 is provided, in this case the stripping tool 1 is formed according to the type described above. The stripping tool 1 has a pair of tool parts 4, 5 including a first tool part 4, 5 and a second tool part 4, 5 for stripping a cable 8 having a core and an insulating sheath 7 of the cable 8. In this case, a cutting part acting on the cable 8 during the stripping process is further provided. Each tool part 4, 5 has a cutting body 9 for receiving a partial region of the cable 8, the cutting body 9 having a cutting part with a cutting tip, which defines a free space of the cutting body 9 provided for receiving the core of the cable 8. The tool parts 4, 5 have tool part bases 12 received in the tool jaws, so that the cutting bodies 9 of the tool parts 4, 5 are displaceable relative to the tool part base 12 in an axial direction perpendicular to the engagement direction r. The tool part base 12 and the cutting bodies 9 are connected to each other and have guide surfaces 44 that allow displacement after overcoming a holding force. The guide surfaces 44 extend at the same obtuse angle relative to the engagement direction r. Application of a force to the cutting bodies 9 can only be achieved by displacement of the tool jaws 2, 3 in the engagement direction r, which application of force results in displacement of the guide surfaces 44 of the cutting bodies 9, and thus of the cutting bodies 9, relative to the guide surfaces 44 of the tool part base 12 with an axial movement component corresponding to the obtuse angle.

[0115] The pair of tool parts 4, 5 is therefore designed to function as shown when received in the corresponding stripping tool 1. This design provides the advantages and features described above with respect to the stripping tool 1. The features relating to the formation of the tool parts 4, 5 of the stripping tool 1 apply equally to the pair of tool parts 4, 5 presented for the stripping tool 1.

[0116] Finally, a method for stripping a cable 8 having a core and an insulating sheath 7 is presented, which method comprises the following method steps: - placing the cable 8 between two opposing cutting bodies of the first tool part 4, 5 and the second tool part 4, 5, each having at least one cutting portion; - moving the first tool part 4, 5 towards the second tool part 4, 5 in an engagement direction r, - cutting an axial section of the insulating sheath 7 of the cable 8 using the cutting part of the first tool part 4, 5 and the cutting part of the second tool part 4, 5; - displacing the cutting bodies 9 of the tool parts 4, 5 in an axial direction perpendicular to the engagement direction r relative to the tool part base 12 of the tool parts 4, 5, in which the tool part base 12 and the guide surfaces 44 of the cutting bodies 9 are operatively connected to each other and extend at the same obtuse angle relative to the engagement direction r, allowing the displacement of the cutting bodies 9 after overcoming the holding force, the application of a force on the cutting bodies 9 being effected solely by a displacement of the tool jaws 2, 3 in the engagement direction r, which application of force results in a displacement of the guide surfaces 44 of the cutting bodies 9 relative to the guide surfaces 44 of the tool part base 12, and thus of the cutting bodies 9, with an axial movement component corresponding to the angle, - separating an axial section of the insulating sheath 7 of the cable 8, namely an insulating piece 45, by displacing the cutting body 9 relative to the tool part base 12;

[0117] The presented method provides a procedure consisting of at least two steps: in a first step, the opposing tool parts 4, 5 are brought together in order to cut the insulating sheath 7 of the cable 8. Thereby, the tool parts 4, 5 are moved towards each other until the cutting tips of the opposing cutting parts or at least partial areas of the opposing cutting parts are in contact or at least nearly in contact with each other. In the first method step, preferably, self-locking of the cutting portion occurs, whereby only cutting of the insulating sheath 7 occurs, but no associated axial movement of the insulating sheath 7 relative to the cutting portion and thus relative to the core of the cable 8 yet occurs. The second step of the procedure is initiated by the user further moving the tool jaws 2, 3, and thus also the tool parts 4, 5 of the stripping tool 1, towards each other, so that the movement blockage is released and, in particular, optionally, the sum of the forces acting on the tool parts 4, 5, in particular the self-locking effect of the cutting part, is released and the forces acting in the opposite direction on the cutting part are added together, resulting in an axial resultant force, which ultimately leads to an axial displacement of the cutting body 9 or its partial cutting body 9, respectively. In particular, the two partial cut bodies are moved away from each other, i.e. in opposite axial directions, so that the cut end pieces of the insulating sheath 7, the insulating pieces 45, are moved relative to the core of the cable 8.

[0118] The displacement of the cutting body 9 relative to the tool part base 12 is achieved by applying a force by displacing the first tool part 4, 5 towards the second tool part 4, 5, which has the effect that at least a partial area of ​​the cutting body 9 of each tool part 4, 5 is pressed against at least one guide surface of the axially inclined wedge structure. As the force continues to be applied, the cutting body 9 or a partial region of the cutting body 9 is guided downwards along the inclined guide surface, starting from the wedge apex of the wedge structure, and simultaneously moved axially until it reaches an end position. The same result can be achieved if the cooperating guide surface 44 is formed as a matching cone. The end position is determined by the tool jaws 2, 3, which are moved together or, optionally, by a restoring element, the restoring force of which either tries to return the cutting body 9 or a partial region of the cutting body 9 to its initial position, or which causes two partial cutting bodies of the cutting body 9 to be connected to each other and displaced one on top of the other. The end position is further defined at least by the abutment of the tool parts 4, 5 on which the cutting means are arranged. The end position is further defined at least by the abutment of the tool part base 12 of the first tool part 4, 5 and the tool part base 12 of the second tool part 4, 5.

[0119] The axial displacement of the cutting bodies 9 preferably involves the first and second partial cutting bodies 9 of the cutting bodies 9 being axially displaced in opposite directions. This in particular achieves symmetry in the displacement movement of the partial cutting bodies relative to the tool parts 4, 5 (tool part base 12). This allows two opposing forces to act on the insulating sheath 7 starting from the cutting point, facilitating stripping of the cable 8. The displacement of the two partial cutting bodies relative to one another can on the one hand involve the displacement of the two cutting portions relative to one another. Alternatively, the displacement of the two partial cutting bodies can involve the removal of the first partial cutting body 9 including the cutting portion from the second partial cutting body 9 including the holding element.

[0120] With respect to the two partial cutting bodies of the cutting body 9, each partial cutting body 9 can in particular support a cutting part. The first cutting part, which is arranged on the end surface region of the first partial cutting body 9 facing the second partial cutting body 9, is separated from the second cutting part, which is arranged on the end surface region of the second partial cutting body 9 facing the first partial cutting body 9. Thus, when two adjacent partial cutting bodies are moved away from each other, a particularly centrally and symmetrical separation of the two cutting parts of one cutting body also occurs at the same time. [Explanation of symbols]

[0121] 1. Stripping tool 2 Tool Jaws 3 Tool Jaws 4 Tool parts 5 Tool parts 6 cable cores 7. Insulating sheath 8 Cable 9 cut body 10 Drive unit 11 Cutting Tip 12 Tool parts base 13 Partially cut body 14 Partially cut body 15 Anterior area 16 Cut section 17 Cut section 18 Restoration Elements 19 Wedge structure 20 Wedge Top 21 Guide surface 22 End stopper 23 Handle area 24 working heads 25 Accumulator 26 Free space 27 Guide rail 28 Rock 29 Actuator Elements 30 holding elements 31 Contact surface 32 Contact surface 33 Contact surface 34 Contact surface 35 Contact surface 36 Contact surface 37 Contact surface 38 Contact surface 39 Journals 40 Stopper 41 Protrusion 42 Guide groove 43 Spring elements 44 Guide surface 45 Insulation piece a Axis direction α Wedge angle β cutting angle r Engagement direction

Claims

1. A stripping tool (1) for stripping a cable (8) having a cable core (6) and an insulating sheath (7), the stripping tool (1) comprising a pair of tool jaws (2, 3) comprising a first tool jaw (2) and a second tool jaw (3) displaceable towards each other in an engagement direction (r) for the stripping process, and a pair of tool parts (4, 5) comprising a first tool part (4) and a second tool part (5), cutting portions (16, 17) are further provided for acting on said cable (8) during the stripping process, Each tool part (4, 5) has a cutting body (9) for receiving a partial region of said cable (8), The cutting body (9) has cutting portions (16, 17) with cutting tips (11), The cutting tip (11) defines a free space (26) of the cutting body (9) intended to receive the cable core (6), The tool parts (4, 5) have tool part bases (12) that are received on the tool jaws (2, 3), The cutting body (9) of the tool part (4, 5) is displaceable relative to the tool part base (12) in an axial direction (a) perpendicular to the engagement direction (r), The tool part base (12) and the cutting body (9) are operatively connected to each other and have guide surfaces (21, 44) that cause displacement after overcoming a holding force; said guide surfaces (21, 44) extend at the same obtuse angle relative to said engagement direction (r); the application of the force of the cutting body (9) can be achieved only by a displacement of the tool jaws (2, 3) in the engagement direction (r), A coating stripping tool, wherein application of the force results in a displacement of the guide surface (44) of the cutting body (9) relative to the guide surface (21) of the tool part base (12) with a movement component in the axial direction (a) corresponding to the angle, and thus a displacement of the cutting body (9).

2. 2. The stripping tool according to claim 1, wherein the tool part base (12) has a wedge structure (19) with at least one guide surface (21) or a wedge structure (19) with at least two guide surfaces (21) tapering in opposite axial directions (+a, -a) to a common wedge apex (20).

3. 3. The stripping tool according to claim 1, wherein the cutting body (9) has two partial cutting bodies (13, 14) displaceable in opposite axial directions (+a, -a) relative to each other, comprising a first partial cutting body (13) and a second partial cutting body (14).

4. 4. The stripping tool according to claim 3, wherein the first partial cutting body (13) has a first cutting portion (16) on an end face region (15) facing the second partial cutting body (14), and the second partial cutting body (14) has a second cutting portion (17) on an end face region (15) facing the first partial cutting body (13).

5. 5. A stripping tool according to claim 3 or 4, characterized in that the two partial cutting bodies (13, 14) are connected to each other by at least one restoring element (18), the restoring force of which tends to move the two partial cutting bodies (13, 14) towards each other.

6. 6. A stripping tool according to claim 1, wherein the cutting body (9) or the partial cutting body (13, 14) is pivotable relative to the tool jaw (2, 3) about the longitudinal axis of the tool jaw (2, 3).

7. 7. A stripping tool according to claim 3, wherein the cutting body (9) and the partial cutting bodies (13, 14) are formed in a conical shape.

8. Stripping tool according to any one of the preceding claims, characterized in that the cutting body (9) has an end stop (22) for the cable (8) received therein.

9. 9. A stripping tool according to any one of the preceding claims, characterized in that at least the first tool jaw (2) is linearly displaceable or pivotable relative to the second tool jaw (3) about a pivot axis.

10. A pair of tool parts (4, 5) for a stripping tool (1) according to any one of claims 1 to 9.

11. A method for stripping a cable (8) having a cable core (6) and an insulating sheath (7), comprising the steps of: placing said cable (8) between two opposing cutting bodies (9) of a first tool part (4) and a second tool part (5), each having at least one cutting portion (16, 17); moving the first tool part (4) towards the second tool part (5) in an engagement direction (r); cutting an axial piece of the insulating sheath (7) of the cable (8) using the cutting parts (16, 17) of the first tool part (4) and the cutting parts (16, 17) of the second tool part (5); a step of displacing the cutting bodies (9) of the tool parts (4, 5) relative to the tool part base (12) of the tool parts (4, 5) in an axial direction perpendicular to an engagement direction (r), wherein the guide surfaces (21, 44) of the tool part base (12) and the cutting bodies (9) are operatively connected to each other and extend at the same obtuse angle relative to the engagement direction (r), allowing the displacement of the cutting bodies (9) after overcoming a holding force, and wherein the application of force to the cutting bodies (9) is effected solely by the displacement of the tool jaws (2, 3) in the engagement direction (r), which application of force results in a displacement of the guide surfaces (44) of the cutting bodies (9) relative to the guide surfaces (21) of the tool part base (12) with an axial movement component corresponding to said angle; and separating an axial piece of the insulating sheath (7) of the cable (8) by displacing the cutting body (9) relative to the tool part base (12).

12. 12. The method according to claim 11, wherein the displacement of the cutting body (9) relative to the tool part base (12) occurs along at least one guide surface (21) of a wedge structure (19) inclined in the axial direction (a).

13. The method according to claim 11 or 12, wherein the axial displacement of the cutting body (9) includes displacing the first partial cutting body (13) and the second partial cutting body (14) of the cutting body (9) in opposite axial directions (+a, -a) to each other.

14. 14. The method according to claim 13, wherein a first cutting portion (16) arranged on an end surface region (15) of the first partial cutting body (13) facing the second partial cutting body (14) is separated from a second cutting portion (17) arranged on an end surface region (15) of the second partial cutting body (14) facing the first partial cutting body (13).

15. A stripping tool (1), a pair of tool parts (4, 5) or a stripping method characterised by one or more of the characterising features of any of the preceding claims.

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